大学化学 >> 2023, Vol. 38 >> Issue (8): 192-199.doi: 10.3866/PKU.DXHX202208043

化学实验 上一篇    下一篇

全无机钙钛矿量子点的疏水改性及LED应用——推荐一个本科生综合化学实验

周文理, 张兵, 宋文丽, 张吉林, 邱忠贤, 韩跃, 李承志, 余丽萍()   

  • 收稿日期:2022-08-09 录用日期:2022-11-29 发布日期:2022-12-19
  • 通讯作者: 余丽萍 E-mail:lpyu@hunnu.edu.cn
  • 基金资助:
    湖南省优质研究生课程(湘教通[2019] 370号);湖南省普通高等学校教学改革研究项目(HNJG-2021-0377)

Hydrophobic Modification of Inorganic Perovskite Quantum Dots and LED Applications: Recommending a Comprehensive Chemistry Experiment for Undergraduates

Wenli Zhou, Bing Zhang, Wenli Song, Jilin Zhang, Zhongxian Qiu, Yue Han, Chengzhi Li, Liping Yu()   

  • Received:2022-08-09 Accepted:2022-11-29 Published:2022-12-19
  • Contact: Liping Yu E-mail:lpyu@hunnu.edu.cn

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摘要：

介绍一个综合化学实验——全无机钙钛矿量子点的疏水改性及LED应用。我们以三甲基氯硅烷和莫来石纤维增强SiO2气凝胶的疏水性和韧性，获得疏水SiO2气凝胶，随后以该疏水SiO2气凝胶吸附全无机钙钛矿量子点形成CsPbX3@SiO2气凝胶复合材料。通过接触角、红外光谱、X射线衍射等表征手段证实SiO2气凝胶的成功改性，并制作了LED器件。本实验涉及材料的合成、表征和应用，可作为化学和应用化学专业学生的综合化学实验，有助于提高学生的科学素养，激发对科学研究的兴趣。

关键词: 钙钛矿量子点, 疏水SiO2气凝胶, 综合化学实验, 教学设计

Abstract:

A comprehensive chemical synthesis experiment, that is, hydrophobic modification of inorganic perovskite quantum dots and LED applications, is introduced in this article. The SiO2 aerogel was prepared with tetraethyl orthosilicate as the raw material, and the hydrophobicity and toughness of SiO2 aerogel were enhanced by trimethylchlorosilane and mullite fibers, respectively. Finally, CsPbX3@SiO2 aerogel composites were obtained by adsorption of inorganic perovskite quantum dots on hydrophobic SiO2 aerogel. The successful modification of the SiO2 aerogel was characterized by contact angle, infrared spectroscopy and X-ray diffraction, and the LED devices were fabricated. This experiment involves synthesis, characterization, and application of materials. It can be used as a comprehensive chemistry experiment for undergraduates majoring in chemistry and applied chemistry, which helps to improve students' scientific literacy and stimulate their interest in scientific research.

Key words: Perovskite quantum dots, Hydrophobic SiO2 aerogel, Comprehensive chemical synthesis experiment, Instructional design