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硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (3): 1053-1062.

• 新型功能材料 • 上一篇    下一篇

缺陷半导体用于光催化固氮的研究进展

王雪晶, 马瑞霄, 徐娟, 张燕辉   

  1. 闽南师范大学化学化工与环境学院,漳州 363000
  • 收稿日期:2021-12-08 修回日期:2021-12-26 出版日期:2022-03-15 发布日期:2022-04-08
  • 通讯作者: 张燕辉,博士,副教授。E-mail:zhangyh@mnnu.edu.cn
  • 作者简介:王雪晶(1997—),女,硕士研究生。主要从事光催化方面的研究。E-mail:1175028302@qq.com
  • 基金资助:
    国家自然科学基金青年项目(21703094);福建省自然科学基金面上项目(2019J01743);漳州市自然科学基金(ZZ2020J02)

Research Progress of Defective Semiconductor Used in Photocatalytic Nitrogen Fixation

WANG Xuejing, MA Ruixiao, XU Juan, ZHANG Yanhui   

  1. College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China
  • Received:2021-12-08 Revised:2021-12-26 Online:2022-03-15 Published:2022-04-08

摘要: NH3不仅是生产各种化学品的必要原料,也是清洁能源的一种重要载体,与人类社会的发展紧密联系。以清洁的太阳能作为唯一能量输入的光催化固氮技术,在温和条件下利用N2和H2O直接产生NH3,近年来引起人们广泛的关注。光催化固氮技术具有环境友好、节能、操作简便等优点,但传统的半导体光催化剂在光捕获和光生载流子利用方面受到限制,不能充分发挥其活性。因此,需要设计相应的催化剂用来提高材料对惰性N2分子吸附和活化能力,从而提高固氮性能。本文首先对光催化固氮进行了简要概述,介绍了光催化固氮可能存在的两种反应机理,随后着重介绍了含有氧、氮、硫空位的半导体材料对光催化固氮的影响。最后,对光催化固氮领域的现有挑战和未来发展给出了一些实际的见解。

关键词: 半导体, 光催化, 固氮, 缺陷, 氧空位, 氮空位, 催化机理, 光生载流子

Abstract: As an important carrier of clean energy, NH3 is a necessary raw material for the production of various chemicals, which is closely related to the rapid development of human society. The photocatalytic nitrogen fixation technology has attracted extensive attention of researchers in recent years, since it uses clean solar energy as the only energy input toward directly converting N2 and H2O to NH3 under mild conditions. Although the advantages of photocatalytic nitrogen fixation technology are environmentally friendly, energy conservation and easy to operate, the traditional semiconductor photocatalyst used for nitrogen fixation cannot fully exert its activity due to the restriction in light harvest and utilization of photogenerated carriers. In order to efficiently enhance the nitrogen fixation performance, thus, it is necessary to design the corresponding catalysts to improve the adsorption and activation of inert N2 molecules. In this paper, first of all, a brief overview of photocatalytic nitrogen fixation was given and two possible reaction mechanisms of photocatalytic nitrogen fixation were introduced. Then, the focus was put on the influence of semiconductor materials containing oxygen, nitrogen and sulfur vacancies on photocatalytic nitrogen fixation. Finally, some practical opinions on the current challenges and future development in the field of photocatalytic nitrogen fixation were given.

Key words: semiconductor, photocatalytic, nitrogen fixation, defect, oxygen vacancy, nitrogen vacancy, catalytic mechanism, photogenerated carrier

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