大学化学 >> 2022, Vol. 37 >> Issue (2): 2105062.doi: 10.3866/PKU.DXHX202105062

所属专题: 化学实验教学和管理

化学实验 上一篇    下一篇

纳米银、金溶胶的电化学合成及其基本胶体性质——物理化学综合实验设计

马继臻, 丁思雨, 田亚冬, 马厚义, 张进涛()   

  • 收稿日期:2021-05-25 录用日期:2021-06-29 发布日期:2021-07-09
  • 通讯作者: 张进涛 E-mail:jtzhang@sdu.edu.cn
  • 作者简介:张进涛, Email: jtzhang@sdu.edu.cn
  • 基金资助:
    山东省自然科学杰出青年基金(ZR2020JQ09)

Electrochemical Synthesis and Basic Properties of Nanostructured Gold and Silver Colloidal Sols: Comprehensive Experiment Design of Physical Chemistry

Jizhen Ma, Siyu Ding, Yadong Tian, Houyi Ma, Jintao Zhang()   

  • Received:2021-05-25 Accepted:2021-06-29 Published:2021-07-09
  • Contact: Jintao Zhang E-mail:jtzhang@sdu.edu.cn

摘要:

电化学和胶体体系基础理论是大学本科物理化学学习的重要内容。通过综合化学实验设计,以直接电化学还原方法制备纳米银、金溶胶,利用紫外-可见光谱分析溶胶粒子的特征吸收光谱,并运用循环伏安法探讨表面活性剂的稳定作用和纳米金属溶胶的形成机理,从而提高学生的基础知识综合运用能力与综合实验技能,适合在大学化学及其相关专业的综合化学实验中推广。

关键词: 电化学, 胶体化学, 溶胶, 纳米材料

Abstract:

The primary electrochemistry and colloid chemistry are the important components of physical chemistry for undergraduate students. On the basis of the nanostructured metal colloids system, a comprehensive chemistry experiment is proposed, which is about synthesis of nanostructured Ag/Au colloidal sols via the direct electrochemical reduction method with the assistance of a surfactant. In addition to the analysis of typical extinction via the UV-Visible spectroscopy, the cyclic voltammetry method is used to understand the effect of the surfactant and reveal the formation process of metal colloids. Such a comprehensive experiment is efficient to not only promote the understanding on the fundamental knowledge of electrochemistry and colloid chemistry, but also enhance the laboratory skill, which is adopted to the laboratory courses for the students majored in chemistry and related.

Key words: Electrochemistry, Colloid chemistry, Sol, Nanomaterial

MSC2000: 

  • G64