大学化学 >> 2023, Vol. 38 >> Issue (12): 220-227.doi: 10.3866/PKU.DXHX202305047

化学实验 上一篇    下一篇

Ag2SO3/AgBr复合材料的制备及对亚甲基蓝的光降解——推荐一个高等师范院校化学创新实验

夏悦1,2, 卢艺波1,3, 黄炜1,*()   

  1. 1 湖南师范大学化学化工学院, 长沙 410081
    2 重庆中医药学院中药学院, 重庆 402760
    3 汝阳县第一高级中学, 河南 汝阳 471200
  • 收稿日期:2023-05-15 录用日期:2023-06-29 发布日期:2023-07-05
  • 通讯作者: 黄炜 E-mail:huangwei@hunnu.edu.cn
  • 基金资助:
    重庆市2023年高等教育教学改革研究项目(233482)

Preparation of Ag2SO3/AgBr Composite for Photodegradation of Methylene Blue: A Recommended Innovative Chemistry Experiment for Normal University

Yue Xia1,2, Yibo Lu1,3, Wei Huang1,*()   

  1. 1 College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
    2 Department of Traditional Chinese Medicine, Chongqing College of Traditional Chinese Medicine, Chongqing 402760, China
    3 The Ruyang First Middle School, Ruyang 471200, Henan Province, China
  • Received:2023-05-15 Accepted:2023-06-29 Published:2023-07-05
  • Contact: Wei Huang E-mail:huangwei@hunnu.edu.cn

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摘要：

采用沉淀-原位化学沉积法制备了Ag2SO3/AgBr复合材料，通过X射线衍射(XRD)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UV-Vis DRS)对样品进行表征，考察了样品对亚甲基蓝溶液的可见光催化降解性能。该实验现象明显，可操作性强，便于学生系统掌握光催化实验技术，且与学科前沿知识和中学化学中沉淀溶解平衡知识点密切联系，可激发学生内在学习动机，自发建立大学化学与基础教育的有效衔接。要求学生通过不同维度对该实验进行创新改进，进而培养化学师范生的创新思维和创新应用能力。

关键词: 光催化, 化学师范生, 大学化学实验, 创新应用能力

Abstract:

Ag2SO3/AgBr composite was prepared by precipitation-in situ chemical deposition method and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). Furthermore, the catalytic degradation of a methylene blue solution under visible light irradiation was investigated. This experiment showcases clear phenomena and offers a high level of operability, making it easily accessible for students to acquire a comprehensive understanding of photocatalytic experimental techniques. Moreover, the experiment is closely linked to both cutting-edge research and the fundamental chemistry concepts related to precipitation and dissolution equilibrium, fostering students' intrinsic motivation to learn and establish a strong connection between college-level chemistry and basic chemistry education. Furthermore, by encouraging students to improve and innovate the experiment from various perspectives, this experiment nurtures their innovative thinking and application abilities, providing valuable training for future chemists in normal universities.

Key words: Photocatalysis, Chemistry students in normal university, University chemistry experiment, Innovative application ability