大学化学 >> 2021, Vol. 36 >> Issue (4): 2005013.doi: 10.3866/PKU.DXHX202005013

化学实验 上一篇    下一篇

牛奶碳量子点的制备与梯度萃取分离——科研转化的综合化学实验

王薇1,3, 韩帅4, 唐晓亮1,2, 郭礼荣1, 唐瑜1,2,*()   

  1. 1 兰州大学化学化工学院, 兰州 730000
    2 甘肃省有色金属化学与资源利用重点实验室, 兰州 730000
    3 化学国家级实验教学示范中心(兰州大学), 兰州 730000
    4 河北工程大学材料科学与工程学院, 河北 邯郸 056000
  • 收稿日期:2020-05-06 录用日期:2020-05-22 发布日期:2020-06-10
  • 通讯作者: 唐瑜 E-mail:tangyu@lzu.edu.cn
  • 作者简介:唐瑜, Email: tangyu@lzu.edu.cn
  • 基金资助:
    兰州大学主干基础课无机化学教学团队建设基金(2015年);甘肃省教育厅2019–2020年甘肃省高等学校教学质量与教学改革工程项目教学成果培育项目;兰州大学教学研究项目(2018年)

Preparation and Gradient Separation of Milk-Derived Carbon Quantum Dots: A Research-Based Comprehensive Experiment

Wei Wang1,3, Shuai Han4, Xiaoliang Tang1,2, Lirong Guo1, Yu Tang1,2,*()   

  1. 1 College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
    2 Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, Lanzhou 730000, China
    3 National Demonstration Center for Experimental Chemistry Education(Lanzhou University), Lanzhou 730000, China
    4 College of Materials Science and Engineering, Hebei University of Engineering, Handan 056000, Hebei Province, China
  • Received:2020-05-06 Accepted:2020-05-22 Published:2020-06-10
  • Contact: Yu Tang E-mail:tangyu@lzu.edu.cn

摘要:

本实验以生物质资源牛奶为前驱体构筑碳量子点,利用梯度萃取法对碳量子点进行分离,并研究碳量子点表面极性与发光性能间的关系。本实验旨在使学生掌握纳米材料的水热合成方法、形貌表征手段、多种分析仪器的原理、操作和数据分析方法,在掌握基础理论和实验技能的同时,培养综合科研能力,拓宽知识面,提升运用相关知识解决实际问题的综合能力。

关键词: 创新综合实验, 牛奶碳量子点, 梯度萃取, 荧光性质

Abstract:

This experiment elucidates a simple method for preparing and separating carbon quantum dots (CQDs), which were fabricated directly by using biological active substance of milk as the precursor and separated by adopting a new strategy of 'gradient extraction'. Furthermore, the relationship between the surface polarity of CQDs and their photoluminescence property are investigated. The aim of this experiment is to master hydrothermal synthesis and morphology characterization of nanomaterials, the principles and operations of analytical instruments including transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS), and the data treatment methods. The purpose of the experiment is to cultivate students' general scientific research abilities, expand their scope of knowledge, and improve comprehensive capabilities for resolving practical problems by using related knowledge, in addition to mastering basic knowledge and laboratory skills.

Key words: Innovative and comprehensive experiment, Milk-derived carbon quantum dots, Gradient extraction, Fluorescence property

MSC2000: 

  • G64