| 贵金属对TiO2悬浮液光照过程中H2O2形成的促进作用 |
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| 引用本文： | 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. |
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| 作者姓名： | 姚晓斌 马颖 姚建年 |
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| 作者单位： | 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 |
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| 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].
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| 关 键 词： | TiO2 贵金属修饰 离子添加 H2O2 |
| 收稿时间： | 1998-06-01 |
THE EFFECT OF NOBLE METAL ON THE GENERATION OF H2O2 IN THE TiO2 AQUEOUS SUSPENSION DURING ILLUMINATION |
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| YAO Xiaobin,MA Ying,YAO Jiannian.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. |
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| Authors: | YAO Xiaobin MA Ying YAO Jiannian |
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| Institution: | 1. Institute of Chemical Engineering, Amakasu Chemical Industries, Japan;2. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China |
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| 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. |
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| Keywords: | TiO2 H2O2 |
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