大学化学 >> 2022, Vol. 37 >> Issue (9): 2203098.doi: 10.3866/PKU.DXHX202203098

所属专题： 化学科普(2022)

科普 上一篇    下一篇

神奇的光催化

王燕, 张绮彤, 张彬, 王宇()   

  • 收稿日期:2022-03-31 录用日期:2022-05-17 发布日期:2022-09-02
  • 通讯作者: 王宇 E-mail:wangyu1012@hit.edu.cn
  • 作者简介:王宇, Email: wangyu1012@hit.edu.cn
  • 基金资助:
    黑龙江省教育科学“十四五”规划2021年度重点课题(GJB1421034)

Amazing Photocatalysis

Yan Wang, Qitong Zhang, Bin Zhang, Yu Wang()   

  • Received:2022-03-31 Accepted:2022-05-17 Published:2022-09-02
  • Contact: Yu Wang E-mail:wangyu1012@hit.edu.cn

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摘要：

光催化反应的原理是当能量大于或等于能带间隙的光照射到半导体光催化剂上时，其价带中的电子将被激发跃迁到导带，在价带上留下空穴，形成电子-空穴对，发生一系列氧化-还原反应。光催化技术是一种高效、安全的环境友好型环境净化技术，有着广阔的发展前景。文章以一个学生的视角，带领读者走进了光催化的神奇世界。

关键词: 光催化, 制氢, CO2还原, 污染物降解

Abstract:

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.

Key words: Photocatalysis, Hydrogen production, CO2 reduction, Pollutant degradation