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2022 Vol. 37,No. 9Published:27 September 2022
Science Education
  • Named "Oxygen" in the World
  • Laiying Zhang, Yaxian Zhu
  • Oxygen is instrumental in human life and production. Through garden activities, this article introduces the basic properties of oxygen and its compounds and their application in life and production, to enable readers to understand oxygen and its compounds in a lively way.

  • 2022, 37 (9): 2204013. DOI: 10.3866/PKU.DXHX202204013
  • A Trip for the Vanadium
  • Fanbo Wu, Yu Wang
  • This paper anthropomorphizes the element vanadium and its compounds. From the leading role's point of view, the paper tells the story of an element which loses his memory, explores the world, gets to know himself, and regains the memory. In this process, the readers will learn about the properties and applications of vanadium as well as its compounds. This paper also highlights the importance of the element in the world today, while helping the reader to recognize and actively understand vanadium in its different valence states.

  • 2022, 37 (9): 2207049. DOI: 10.3866/PKU.DXHX202207049
  • Miss Zinc's Job Application
  • Laiying Zhang, Yaxian Zhu
  • Zinc plays an important role in human life and production. By means of job interview and personification, this paper introduces the basic properties of zinc and its compounds and their applications in life and production, so that readers can understand zinc and its compounds in a lively way.

  • 2022, 37 (9): 2111065. DOI: 10.3866/PKU.DXHX202111065
  • The Tale of Arsenic
  • Shuhang Niu, Quanhai Fang, Jing Yan, Ningjing Cai, Yi Yan
  • Arsenic has played an irreplaceable role in human history but is notorious for its toxicity. This paper highlights the history, basic properties, role in human life, and applications of some important compounds of arsenic by means of anthropomorphism. The goals are to spark the interest of readers, provoke their thinking, and change their general impression of arsenic.

  • 2022, 37 (9): 2204058. DOI: 10.3866/PKU.DXHX202204058
  • Magical World of Bromine
  • Rui Wang, Laiying Zhang, Yaxian Zhu
  • Bromine is important to human life and production. This article will enable readers to understand the basic properties, compounds, and roles of bromine in human life and production in a lively manner.

  • 2022, 37 (9): 2206075. DOI: 10.3866/PKU.DXHX202206075
  • Adventures of Little Barium
  • Jinhong Wu, Youqi Pan, Laiying Zhang, Yaxian Zhu
  • Barium plays an important role in human life and commercial production, but can also cause considerable harm to our health. In an attempt to describe the adventures of barium, this paper reports on the basic properties of barium and its compounds, as well as their applications, which will provide a broad understanding of this element and its compounds to the readers.

  • 2022, 37 (9): 2204046. DOI: 10.3866/PKU.DXHX202204046
  • Excellent Tungsten
  • Ziyan Zheng, Laiying Zhang, Yaxian Zhu
  • Tungsten is important to human life and production. This article will enable readers to understand the basic properties, compounds, and roles of tungsten in human life and production in a lively manner.

  • 2022, 37 (9): 2206009. DOI: 10.3866/PKU.DXHX202206009
  • School Notes on "Platinum"
  • Meifang Ding, Laiying Zhang, Yaxian Zhu
  • Platinum plays an essential role in human life and in various manufacturing technologies. This paper personifies platinum to describe its properties and applications in everyday life and in manufacturing technologies. We aim to enable readers to understand the content presented in an easy and lively manner.

  • 2022, 37 (9): 2203016. DOI: 10.3866/PKU.DXHX202203016
  • New Colleagues of Lithium-Ion Battery
  • Yifan Fang, Yingxia Li, Hanlin Ding, Shengyu Jin, Yang Zhang, Wensheng Yang
  • In recent years, with the development of new energy technology, lithium-ion batteries have been used on a large scale. However, due to the small reserve volume and uneven distribution of lithium in nature, the production cost of lithium-ion batteries has increased year by year. Therefore, new types of ion batteries that can replace lithium-ion batteries, such as sodium-ion batteries, magnesium-ion batteries and so on, have gradually attracted people's attention. In this paper, lithium, sodium, potassium, magnesium and aluminum are personified. Through their debate, the advantages, disadvantages, development bottlenecks and future prospects of lithium-ion batteries and other new types of ion batteries are introduced.

  • 2022, 37 (9): 2208066. DOI: 10.3866/PKU.DXHX202208066
  • LCPs Win the Top Spot in the 5G Talent Recruitment
  • Xuejing Yang, Jianfeng Hu, Hao Zhang
  • With the advent of 5G era, countries are in fierce competition in the field of high and new technologies, and functional polymer materials have made rapid progress. Liquid Crystal Polymer (LCP) plays a crucial role in the field of 5G materials and becomes a "super star". This paper introduces the history of liquid crystal science and the properties and applications of LCP through a special recruitment conference.

  • 2022, 37 (9): 2207136. DOI: 10.3866/PKU.DXHX202207136
  • Fantasy of Artificial Intelligence in Chemistry
  • Chenhang Chao, Ping Lu, Xin Hong
  • In recent years, machine learning has demonstrated great potential in chemistry. More specifically, it has found important applications in the fields of chemical property prediction, reaction performance prediction, molecular design, retrosynthetic analysis, and robotic synthesis. This paper introduces the research background, methods, prospects, and challenges of machine-learning applications in chemistry from an anthropomorphic perspective of paper A.

  • 2022, 37 (9): 2207027. DOI: 10.3866/PKU.DXHX202207027
  • Charlie and the Molecular Machine Factory
  • Xinwen Zhang, Siyao Wang, Yue Dai, Yan Su, Wenfeng Jiang
  • Constructing miniaturized machines is a solution for increasing machine functions and improving machine performance. At the molecular level, building complex machines will revolutionize traditional machine manufacturing. In Charlie's exploration of molecular machine factories, we introduce the design and synthesis of various molecular machines.

  • 2022, 37 (9): 2205063. DOI: 10.3866/PKU.DXHX202205063
  • Age of Supercritical Carbon Dioxide
  • Yang Liu, Yuqi Gao, Zhiying Ding, Xiaoqing Qiu, Xinyuan Cheng
  • Supercritical carbon dioxide (scCO2) is a fluid state of CO2 formed above its critical temperature and pressure. Supercritical fluid technology and its applications have become an important research field and new growth-point for knowledge disciplines in China. Through anthropomorphism, this paper introduces the definition, advantages, applications, and development prospects of scCO2. Moreover, some physical and chemical principles are presented to help readers learn the relevant knowledge relating to scCO2.

  • 2022, 37 (9): 2203001. DOI: 10.3866/PKU.DXHX202203001
  • Azo Molecules in the Martial Arts World: Amazing Application
  • Jiashang Chen, Kin Shing Chan
  • Colorful azo molecules can be found in our daily lives, like clothes, cosmetics and food, etc. However, the azo molecules can do much more than that. Through the story of an azo molecule in martial arts world, this paper mainly introduces a gecko-like adhesive pad controlled by light, the mechanism of the generation and the color change of the molecule. Through the "poison uniform" event, this paper introduces the carcinogenic risk of the azo disperse dyes and the anti-cancer effect of an azo dye. The wide and amazing applications of azo compounds are also highlighted.

  • 2022, 37 (9): 2205030. DOI: 10.3866/PKU.DXHX202205030
  • Mystery of Organic-Inorganic Nano Hybrid "All-Rounder" POSS
  • Xingcheng Hu, Xinyu Yang, Wenlong Liu, Xingwen Zhang
  • Polyhedral oligomers polysiloxane (POSS) is the "all-rounder" of nano hybrid modified materials in the chemical world. In the act of personifying, this paper reveals the mystery of POSS from its types, chemical structures, assembly methods, application fields and other aspects, by telling a story, so that readers can get a deeper understanding of its chemical properties and application prospects.

  • 2022, 37 (9): 2202069. DOI: 10.3866/PKU.DXHX202202069
  • Light Emissary: Curing Diseases Using Shining Lights
  • Jialiang Qian, Chongyue Luo, Kin Shing Chan
  • The war between the human and the disease kingdom has existed since ancient times. With the progress of human science and technology, numerous new chemical and medical methods have been applied to disease treatment. Although the results are remarkable, there are still some diseases that human beings cannot address. In dealing with this situation, the king of the light kingdom decided to send ultraviolet, blue, and red light soldiers to help. The ultraviolet light soldier tackled the SARS-CoV-2, the blue light soldier fought jaundice, and the red light soldier assassinated cancer. Then, the human kingdom joined the light kingdom and started a war against the disease kingdom.

  • 2022, 37 (9): 2202027. DOI: 10.3866/PKU.DXHX202202027
  • Amazing Photocatalysis
  • Yan Wang, Qitong Zhang, Bin Zhang, Yu Wang
  • When the semiconductor photocatalyst is irradiated by light with energy greater than or equal to the energy band gap, electronic transition will occur between the valence band and the conduction band to form electron-hole pair, thus, a series of oxidation-reduction reactions will happen. Photocatalysis is an efficient and environment-friendly technology for environmental decontamination, having the potential for a breadth of applications. From the perspective of a student, this article leads readers into the magic world of photocatalysis.

  • 2022, 37 (9): 2203098. DOI: 10.3866/PKU.DXHX202203098
  • Magic of Fluorescence: Colorful World of Fluorescent Hydrogels
  • Shu Han, Shuhan Yang, Yuyang Lu, Fang Li, Yougui Li
  • In this study, two types of fluorescent hydrogel materials, liquid inks and solid beads, were prepared. The prepared hydrogel ink and beads can emit strong fluorescence under excitation by UV light. The materials were then used for painting and artistic creation, which allowed people to personally experience the magic of fluorescence, discover the fun, and stimulate their interest in chemistry.

  • 2022, 37 (9): 2206099. DOI: 10.3866/PKU.DXHX202206099
  • Fluorescence of Sugar-Coated Haws on a Stick: From Delicious Snack to Carbon Quantum Dots
  • Yuan Zhang, Na Jian, Fukun Yan, Rong Miao, Liping Ding
  • One of the most popular traditional Chinese snacks, sugar-coated haws on a stick are favored by the old and young. Carefully prepared syrup is the key ingredient of sugar-coated haws on a stick. The syrup not only endows the snack great taste, but also brings a glittering appearance. Interestingly, syrup can emit fluorescence under UV light irradiation and it contains a well-known fluorescent material, namely carbon quantum dots. In this study, the fluorescence behavior and microstructure of the syrup were studied and some typical applications of carbon quantum dots in daily life and scientific research are briefly introduced.

  • 2022, 37 (9): 2201040. DOI: 10.3866/PKU.DXHX202201040
  • Adventures of Three Brothers, ETFE, PTFE, and PVB, in Olympic Architecture
  • Yitong Liu, Miao Du, Xinglong Wu
  • Olympic dream in the eventful years, twice Olympic city during the Chinese renaissance. Based on an anthropomorphic treatment of building materials used in the 2008 Beijing Summer Olympic Games and the 2022 Beijing Winter Olympic Games, this paper introduces three organic materials, ETFE, PTFE, and PVB, used in important Olympic venues such as "Water Cube" "Bird's Nest" and "Ice Ribbon" in the form of a symposium. Furthermore, it discusses their molecular structure, nature, and important role in Olympic architecture.

  • 2022, 37 (9): 2202005. DOI: 10.3866/PKU.DXHX202202005
  • Warm-Boy-Like Graphene in the Winter Olympics
  • Yuhan Dong, Rongxiu Zhu
  • Graphene is a two-dimensional honeycomb-like lattice-structured nanomaterial with excellent thermal conductivity and mechanical strength. It made an outstanding contribution in the 2022 Beijing Winter Olympic Games. Through a first person perspective, this paper personifies graphene to describe its structure and properties, advantages, preparation, as well as its applications in the Olympic Games just pasted. The aim is to show the scientific and technological strength of China and make readers fully aware that graphene "black technology" has infiltrated into our lives.

  • 2022, 37 (9): 2207088. DOI: 10.3866/PKU.DXHX202207088
  • Microplastics Travel Agency
  • Ziqiang Deng, Hongjie Song, Rui Liu, Yi Lv
  • Plastics have been used for more than a century. While plastics have brought unpredictable benefits and convenience to human being, they have also quietly brought about an emerging environmental pollutant-microplastics, which has seriously affected the water ecology and environment, and posed a potential health threat to organisms and even humans. Under this circumstance, effective monitoring of microplastics in water bodies and living organisms is of great importance. Unfortunately, there is currently no robust and effective detection method for microplastics. This paper uses a short story to popularize the science of the origins and hazards of microplastics, and the shortcomings of some current microplastic detection technologies.

  • 2022, 37 (9): 2110069. DOI: 10.3866/PKU.DXHX202110069
  • Interview Report of Purine Family
  • Pengzhong Ding, Rongxiu Zhu
  • Purines play an essential role in maintaining the normal life activities, but abnormal metabolism of purine can cause gout. In this paper, the structure, distribution and physiological functions of purine, adenine, guanine, hypoxanthine and xanthine are introduced in the form of an interview with the purines. Moreover, the process of purine metabolism to produce uric acid, and the etiology, pathogenesis, prevention and treatment measures of gout are also presented in a simple and easy-to-understand way.

  • 2022, 37 (9): 2207072. DOI: 10.3866/PKU.DXHX202207072
  • Cholesterol in the "Big City"
  • Yi Zhang, Jinxin Guo
  • Cholesterol is the main steroid compound in mammals. It plays an important role in the fundamental life process, but the abnormal content of cholesterol will also bring a lot of harm to the body. This article describes the process of cholesterol entering the human body as well as its role and influence in the human body in the third person anthropomorphically. It aims to help readers understand cholesterol metabolism in an interesting and vivid way.

  • 2022, 37 (9): 2207035. DOI: 10.3866/PKU.DXHX202207035
  • Adventures of DNA: Oxidative Damage
  • Zhe Guan, Hongjie Song, Rui Liu
  • DNA damage is a change in DNA structure caused by external or internal factors, including DNA alkylation, oxidation, mismatch, breakage. Although the DNA damage repair mechanism can repair damaged DNA to a certain extent, accumulated damage that is not repaired can seriously threaten genome stability and human life. Oxidative DNA damage is one of the most common types of damage, with 8-hydroxydeoxyguanosine as its biomarker. The quantitative detection of 8-hydroxydeoxyguanosine can reflect the degree of oxidative DNA damage, which is very important for the early diagnosis and treatment of diseases. In this paper, we introduce the production process, repair mechanism, and detection methods for 8-hydroxydeoxyguanosine.

  • 2022, 37 (9): 2204087. DOI: 10.3866/PKU.DXHX202204087
  • Know Your Health Signs from the Color of Your Urine
  • Yaoyao Zhang, Kin Shing Chan
  • Urine color is an important indicator of human health. Through the process of medical treatment of a character, Xiaobei, based on his abnormal urine color, this article introduces the common causes of several abnormal urine colors, such as blood red and milky white. This can help people judge their health based on their own urine on time.

  • 2022, 37 (9): 2202029. DOI: 10.3866/PKU.DXHX202202029
  • "Fake" Gate, but Real Channel: An Artificial Ion Channel
  • Yinan Lu, Siming Zhong, Hongcheng Sun, Junqiu Liu
  • Ion channel plays an important role in our life. The classification, function, property of native ion channels and artificial ion channels, and their effects on our healthy life were introduced by using anthropomorphic technique, so that readers can well understand artificial ion channels.

  • 2022, 37 (9): 2203064. DOI: 10.3866/PKU.DXHX202203064
  • Floating Life of Plasmodium
  • Dehong Yang, Zilin Pan, Kun Wang, Liuxue Zhang, Baiwei Ma, Benyong Yang
  • Malaria has been prevalent since the beginning of human history and continued to harm human beings for thousands of years. The malaria-transmitting parasite developed from single-celled organisms, and after a prolonged evolution period it finally infected humans. In 2021, World Health Organization (WHO) announced that China obtained malaria-free certification, indicating the country's absolute victory in the history of anti-malaria. In contrast, in other countries, especially in the African region, malaria remains rampant. This study applied an anthropomorphic approach to help people understand the harm caused by malaria, the causes and transmission methods of malaria, and the drugs as antimalarial weapon of human beings. Additionally, this study focused on the efficacy and development of antimalarial drugs dichlorodiphenyltrichloroethane (DDT), quinine, and artemisinin. In the future, China Shencao will continue to benefit the world. Finally, this study demonstrates the scientific achievements regarding the Nobel Prize in the history of the fight against malaria and predicts the grim future of the malaria parasite as a parasite baby.

  • 2022, 37 (9): 2207143. DOI: 10.3866/PKU.DXHX202207143
  • Renaissance of Gemtuzumab Ozogamicin
  • Yi Wu, Rui Liu, Yi Lv
  • This study describes the history of the development of antibody-drug conjugate in the form of interviews. The recognized history of the first commercially available antibody-drug conjugate "getuzumab" was used as the open line, whereas the progress of targeted drugs in chemical molecular design and analysis and detection was used as the dark line. The chemical structure, design, analysis, and development prospects of antibody-drug conjugates were comprehensively introduced.

  • 2022, 37 (9): 2206066. DOI: 10.3866/PKU.DXHX202206066
  • The Anti-Cancer Legend of Paclitaxel
  • Caixia Li, Rui Liu, Yi Lv
  • The incidence and mortality rate of cancer are high and many people died from cancer every year. In order to improve the survival rate of cancer patients, scientists have long been searching for medicines. Paclitaxel has excellent performance in cancer chemotherapy and it gives new hope to cancer patients. In this paper, paclitaxel is introduced from three aspects: discovery history, synthesis method and the mechanism.

  • 2022, 37 (9): 2206049. DOI: 10.3866/PKU.DXHX202206049
  • The Breakout Games of Indigotin
  • Youyuan Xu, Yani Ouyang, Wanmei Li
  • This article introduces the plant source, development history, structure, properties, preparation, and application of indigotin through the type of the player's breaking through a chemical game in the form of "dialogue" and "games' interaction", so that readers can learn about indigotin while having fun with chemistry.

  • 2022, 37 (9): 2204084. DOI: 10.3866/PKU.DXHX202204084
  • Morphine: The Flower of Morpheus and the Fruit of Perdition
  • Yue Wang, Kailai Xu, Yi Lv, Lichun Zhang
  • Morphine is a widely used painkiller and a drug that has caused great harm to the human society. This essay offers a brief introduction of the chemical structure, properties, discovery, applications, and identification methods of morphine in order to help readers gain a deeper understanding of this compound.

  • 2022, 37 (9): 2109079. DOI: 10.3866/PKU.DXHX202109079
  • Commander against the Pandemic: Chlorine-Based Disinfection of Viruses
  • Jialiang Qian, Li Zhou, Ao Cao, Kin Shing Chan
  • The new conronavirus outbreak in 2019 has mandated people to undergo home quarantine. Surveys have revealed that many people lack basic knowledge of disinfectants, thus failed to use disinfectants properly. In order to popularize the appropriate use of disinfectants to prevent epidemic diseases more effectively, this paper mainly introduces the properties, principles and applications of 84 disinfectant, sodium dichloroisocyanurate (NaDCC) and trichloroisocyanuric acid (TCCA) from the perspective of a player in a mobile phone war game emphasizing the importance of disinfection time, concentration, usage and dosage in various settings.

  • 2022, 37 (9): 2109078. DOI: 10.3866/PKU.DXHX202109078
  • No Way to Hide: Detection of Novel Corona Virus
  • Gengxin Gao, Kin Shing Chan
  • This article focuses on the advantages, disadvantages, and principles of COVID-19 nucleic acid testing methods, and explains why nucleic acid testing is considered the gold standard. In addition, details of mixed sampling and antigen detection in nucleic acid testing are provided.

  • 2022, 37 (9): 2205031. DOI: 10.3866/PKU.DXHX202205031
  • Sipping Tea: General Introduction of the Organic Components in Tea
  • Jiayi Yang, Yuhan Lian, Xiangdong Hu, Yunxia Wang
  • Sipping tea is not only an important part of people's daily life, but also one of the contents of elegant life. From the perspective of chemistry, this article popularizes the basic properties and bioactivities of the organic compounds contained in tea from color, fragrance and taste. It is expected to provide general knowledge of organic chemistry and health care functions of tea for readers, and encourage chemists to develop more products to make tea better serve life.

  • 2022, 37 (9): 2204055. DOI: 10.3866/PKU.DXHX202204055
  • A Visit to Wine Aroma Park
  • Liangrong Li, Yulin Huang, Hailian Huang, Nianyang Liang, Zhen Chen, Hui Jiang, Shengjie Tang, Zongkai Jiang, Qiuping Li
  • Wine takes the essence of grain, water as its shape, and fire as its nature. Quality heritage Kweichow Moutai is the crystallization of cultural self-confidence and the world-famous business card of China. In this paper, we have virtualized the scene where the director of Moutai Distillery leads freshman Xiaomu and chemistry researcher Dr. Liu during their factory visit. The director explained the composition of wine, preparation process, after-drinking phenomenon, the harm of fake wine, and the principles contained in those processes. Furthermore, the influence of alcohol on the human body and the related mechanisms were briefly discussed.

  • 2022, 37 (9): 2202065. DOI: 10.3866/PKU.DXHX202202065
  • Know the Sweetness and Enjoy the "Sweet" Life
  • Minling Jiang, Tian He, Shouchun Yin
  • In this article, the types of sweeteners, the functions and efficacy of xylitol and erythritol in sugar alcohol, and the preparation of erythritol are introduced by telling a fictional story about how Miss Sweetener helps young people give up sugar. In the meantime, the shortcomings of sweeteners are elaborated in order to provide some suggestions for human healthy life.

  • 2022, 37 (9): 2203082. DOI: 10.3866/PKU.DXHX202203082
  • Turning Pale at the Mention of "Corrosion"
  • Senke Tan, Wanshun Li
  • Corrosion phenomena are ubiquitous in industrial engineering and in daily life. However, corrosion has caused significant national economic losses and negatively affected social production activities. This essay expounds the causes and mechanisms of corrosion in a way of science popularization and enables readers to adequately understand corrosion phenomena and the practical application of anti-corrosion measures in engineering.

  • 2022, 37 (9): 2205088. DOI: 10.3866/PKU.DXHX202205088
  • Toxin on the Tip of the Tongue: Tetrodotoxin
  • Yuling Zhang, Lichun Zhang
  • Pufferfish culture is a wonderful chapter in the history of China's food culture. Tetrodotoxin, which is present in the body of pufferfish, is a powerful non-protein neurotoxin that mainly acts through highly selective blockage of the voltage-gated sodium channel. Tetrodotoxin is one of the deadliest toxins, with a lethal dose range of 1.5–2.0 mg. However, tetrodotoxin has been found to exhibit unique therapeutic properties for the treatment of neuropathic pain, cancer-related pain, and drug withdrawal when administered well below LD50 levels. This paper briefly describes the analytical process for the structure of tetrodotoxin and introduces its action mechanism and future application prospects in medical treatment.

  • 2022, 37 (9): 2203097. DOI: 10.3866/PKU.DXHX202203097
  • The First Day of Scapharca Subcrenata to Enter Its Career
  • Ying Mao, Yuru Zhang, Wanmei Li
  • Based on the Scapharca subcrenata's exploration of career path, this paper introduces the nutritional components of Scapharca subcrenata and its abundant values in human life. The purpose is to provide readers with an in-depth understanding of the nutritional value of the Scapharca subcrenata and the preparation process of taurine, and to build the concept of environmental protection.

  • 2022, 37 (9): 2207036. DOI: 10.3866/PKU.DXHX202207036
  • Soliloquy of Colored Contact Lenses
  • Xichen Wang, Zhihao Zhang, Zheng Cai, Huijun Jiang
  • By means of personification, this article introduces the structure of colored contact lenses, the harmful effects of improper use, and recommendations for safe and comfortable use through the medium of soliloquy. This article provides a deep understanding of colored contact lenses and improves safety awareness regarding their use.

  • 2022, 37 (9): 2206008. DOI: 10.3866/PKU.DXHX202206008
  • Beauty and Whitening: The Story of Melanin
  • Yuru Zhang, Jun Xu, Wanmei Li
  • Whitening has long been the focus of attention. In this paper, the formation process of melanin is introduced in the form of a "dialogue", and the mechanisms of commonly used whitening ingredients that inhibit melanin production are explained. This will allow readers to participate in the dialogue from the perspective of a third-party and help them understand the formation of melanin and the process of melanin shedding and metabolism, so as to lay the foundation for people to whiten skin safely.

  • 2022, 37 (9): 2203010. DOI: 10.3866/PKU.DXHX202203010
  • "Heavy Metal Pollution Case" in Cosmetics World
  • Han Zhang, Hongjie Song, Yi Lv
  • Since ancient times, cosmetics have been daily necessities that can be seen everywhere in people's daily life. However, in order to enhance the efficacy and earn profits, some illegal businessmen have added a large amount of heavy metals to cosmetics, which is harmful to the safety of consumers' lives and property. This paper introduces the function, principle, harm, and detection methods of heavy metal elements added to cosmetics, so as to enhance people's understanding of cosmetics and improve the safety awareness during purchasing and using cosmetics.

  • 2022, 37 (9): 2203080. DOI: 10.3866/PKU.DXHX202203080
  • Comparison of Three Types of Hair Dyes
  • Wenxin Hao, Xuanhe Liu, Zhixin Li, Yuxin Nie, Lu Deng, Jing Wu
  • The continuous pursuit of beauty has increased the popularity of hair dyes. Hair dye has become more popular with both the elderly and young people. This report classifies hair dyes and introduces the composition, mechanism, and safety of different hair dyes through an interesting story.

  • 2022, 37 (9): 2205059. DOI: 10.3866/PKU.DXHX202205059
  • A Tale of Monetary Metal
  • Quanhai Fang, Jing Yan, Shuhang Niu, Ningjing Cai, Yi Yan
  • The typical precious metals include gold, silver, copper, and cobalt. In addition to circulating in the market in the form of general equivalents, these metals also play important roles in many other aspects of human life. In an anthropomorphic way, this paper introduces the production methods and catalytic properties of monetary metals, as well as the luminescence of monetary metal clusters. The aim is to help readers deepen their understanding of the production and wide range of uses of monetary metals.

  • 2022, 37 (9): 2204053. DOI: 10.3866/PKU.DXHX202204053
  • Pageant Journey of Blue and White Porcelain
  • Songxue Shao, Haiyun Shen
  • Based on the excellent performance of blue and white porcelain at the beauty pageant, the main components and function of blue and white porcelain, its source and coloration mechanism, the modern synthetic methods of blue and white materials, and the identification methods of blue and white porcelain are introduced through personification to explain the chemistry of blue and white porcelain in a way that is interesting to readers and that conveys the charm and spirit of craftsmanship.

  • 2022, 37 (9): 2110061. DOI: 10.3866/PKU.DXHX202110061
  • Deciphering the Wordless Heavenly Script through the Magic of Chemistry
  • Chenchen Huang, Tian He, Shouchun Yin
  • Since ancient times, chemical knowledge has been used to produce and decrypt invisible books. In this article, through the experience of Agent Sun and his granddaughter, we not only propagate the chemical knowledge contained in invisible books to the public and describe how to make invisible books skillfully with common objects used in daily life, but also introduce organic fluorescent materials to popularize scientific achievements in new encryption, anti-counterfeiting, and decryption. Thus, this article communicates the importance of information security and scientific and technological progress, while cultivating an interest in chemistry.

  • 2022, 37 (9): 2206002. DOI: 10.3866/PKU.DXHX202206002
  • Construction of Graded Material Library for Teenagers' Science Popularization Activities on Chemistry
  • Liping Li, Xueli Li, Wenhao Liu, Zeshuo Du
  • Based on the collection and analysis of common science popularization materials on chemistry, our research establishes a content-graded material library with practical reference value for chemical education and chemical science popularization by integrating the corresponding relationship between material content and science education system. Focusing on the policy orientation and practical requirements of social development in the new era, our research aims to provide a framework and a constructive perspective for the specific practical problems of teenagers' science popularization activities on chemistry.

  • 2022, 37 (9): 2111073. DOI: 10.3866/PKU.DXHX202111073
  • Exploration of Chemistry Popularization in "Beijing Winter Olympic Games" Based on STSE Educational Philosophy
  • Haizhou Sun, Menglan Huang, Pengfei Zhang, Weiming Xu
  • The STSE (Science, Technology, Society and Environment) educational philosophy focuses on promoting student understanding and knowledge acquisition through situational teaching method, emphasizing the interrelationship between science, technology, society, and the environment. This paper takes the "Beijing Winter Olympic Games" as a context. Based on the STSE educational philosophy, through the integration of chemistry with the social, technical, and environmental elements of the Beijing Winter Olympic Games, the paper explains how chemistry contributed to the Beijing Winter Olympic Games. It will inspire students to take an interest in chemistry, promote students' awareness of sustainable development, and cultivate chemistry talents for the construction of a modern science and technology powerhouse.

  • 2022, 37 (9): 2204089. DOI: 10.3866/PKU.DXHX202204089
  • Innovative Popular Science Experiment Using the Theme of the Winter Olympics
  • Qi Jing, Xinyao Zhang, Qingyuan Gao, Wenyun Wang, Qing Feng, Min Liu, Hongling Yuan
  • Using the Winter Olympics as a theme, a popular science experiment was developed that creatively integrates the elements of the Winter Olympics scene with a chemical experiment by applying the knowledge and mechanisms of chemistry, such as high-molecular-weight sodium polyacrylate, natural pigments in fruits and vegetables, colorful coordination compounds, the zinc/tin replacement reaction, and the luminol fluorescence experiment. A series of gradient and modular popular science experiments were performed for people with different knowledge levels to completely demonstrate the beauty and interesting aspects of chemistry and subtly realize the dissemination of the Winter Olympic spirit and scientific knowledge to the public, and thereby promote the improvement of public scientific literacy.

  • 2022, 37 (9): 2205107. DOI: 10.3866/PKU.DXHX202205107
  • Exploring Chemical Structures by Knotting
  • Haoyue Dong, Zhenzhen Feng, Jiangyan Duan, Hengyu Shi, Jinmei Zhou, Huijun Zhang
  • The art of knotting plays a pivotal role in Chinese culture. A wide variety of exquisite Chinese knots have been created using one single rope. Chinese knotting not only reflects Chinese history, culture, and personal beliefs, but also represents the wisdom of the Chinese people. Analogous to Chinese knotting, a limited number of chemical elements in the periodic table make up the complex and ever-changing world of matter. By combining the art of knotting with the chemical structures, we created a series of novel Chinese knots with molecular geometries and launched a series of "exploring chemical structures by knotting" science activities. In these activities, participants could understand the creative characteristics of chemistry by making Chinese-knot molecular models, which provided valuable opportunities to introduce the art of chemical structures to the public.

  • 2022, 37 (9): 2207061. DOI: 10.3866/PKU.DXHX202207061
  • Growth of Beautiful Tin Crystals
  • Yunyi Luo, Wei Deng, Zhenghao Zhang, Rui Wang, Donglin Wang
  • In this study, a convenient and interactive tin electrolysis device was developed for science popularization based on science demonstration technology. After switching on the experimental device, participants can directly observe the rapid growth of tin crystals in the electrolyte at the cathode and the occurrence of many bubbles and color changes in the solution at the anode. Thus, they can experience the beauty and fun of chemistry. The speed of tin crystal precipitation can be changed by adjusting the voltage of the DC power supply, and the current direction can be changed by the current direction switch. A LED display shows the current direction so that participants can intuitively understand its influence on the direction of tin crystal precipitation and the color changes in the anode solution. Participants can also easily understand the basic principles of electrolysis. After the tin crystal growth is completed, AB glue is added, fixing the beautiful tin crystals from electrolysis as a pendant or as another decorative element to be kept as a souvenir. This forms good memories for participants and achieves a good science popularization effect. The equipment used in this experiment is simple, and the cost is low. It can also be used as a basic experimental project in the general chemistry course at the university level or as an exploration experiment for senior high school students.

  • 2022, 37 (9): 2112007. DOI: 10.3866/PKU.DXHX202112007
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