贵金属对TiO2悬浮液光照过程中H2O2形成的促进作用

doi:10.7517/j.issn.1674-0475.1999.02.159

影像科学与光化学 ›› 1999, Vol. 17 ›› Issue (2): 159-163.DOI: 10.7517/j.issn.1674-0475.1999.02.159

贵金属对TiO₂悬浮液光照过程中H₂O₂形成的促进作用

姚晓斌¹, 马颖², 姚建年²

1. 甘糟化学产业株式会社化工研究所, 日本;
2. 中国科学院感光化学研究所, 北京 100101

收稿日期:1998-06-01 修回日期:1998-08-25 出版日期:1999-05-20 发布日期:1999-05-20
通讯作者: 姚建年

THE EFFECT OF NOBLE METAL ON THE GENERATION OF H₂O₂ IN THE TiO₂ AQUEOUS SUSPENSION DURING ILLUMINATION

YAO Xiao-bin¹, MA Ying², YAO Jian-nian²

1. Institute of Chemical Engineering, Amakasu Chemical Industries, Japan;
2. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China

Received:1998-06-01 Revised:1998-08-25 Online:1999-05-20 Published:1999-05-20

摘要/Abstract

摘要： 众所周知,TiO₂是一种能进行光能-化学能转换的半导体材料.70年代初期,日本的Fujishima等人[1]发现TiO₂电极能利用光能将水分解为氢气和氧气.从此,TiO₂作为光能转换材料,在太阳能利用,环境保护,卫生医疗等许多领域逐渐引起研究人员的注目并相继在许多基础和应用方面得到了大量的研究^[2～5].

关键词: TiO₂, 贵金属修饰, 离子添加, H₂O₂

Abstract: The effect of Ag⁺ and Pd²⁺ ion on the generation of H₂O₂ in the TiO₂ aqueous suspension were studied and compared with the surface modification of TiO₂ with Ag and Pd. The production of H₂O₂ under ultraviolet illumination was greatly enhanced after such noble metals were added. This effect was due to the inhibiting of recombination of electrons and holes by noble metal atoms adsorbed on TiO₂ surface. But the amount of H₂O₂ generated in Pd²⁺/TiO₂ aqueous suspension was not as large as that in Pd/TiO₂ system during the first ten minutes of illumination. The slow reduction of Pd²⁺ under ultraviolet illumination to Pd leads to such results.

Key words: TiO₂, modified by noble metal, addition of ion, H₂O₂

姚晓斌, 马颖, 姚建年. 贵金属对TiO₂悬浮液光照过程中H₂O₂形成的促进作用[J]. 影像科学与光化学, 1999, 17(2): 159-163.

YAO Xiao-bin, MA Ying, YAO Jian-nian. THE EFFECT OF NOBLE METAL ON THE GENERATION OF H₂O₂ IN THE TiO₂ AQUEOUS SUSPENSION DURING ILLUMINATION[J]. Imaging Science and Photochemistry, 1999, 17(2): 159-163.

参考文献

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贵金属对TiO₂悬浮液光照过程中H₂O₂形成的促进作用

THE EFFECT OF NOBLE METAL ON THE GENERATION OF H₂O₂ IN THE TiO₂ AQUEOUS SUSPENSION DURING ILLUMINATION

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