高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (3): 461.

• 研究快报 • 上一篇    下一篇

TiO2负载型催化剂及光催化还原CO2反应的表面光电压谱研究

徐用军1, 谢腾峰2, 王德军2, 王瑛2, 李铁津2   

  1. 1. 大庆职工大学, 大庆 163255;
    2. 吉林大学化学系, 长春 130023
  • 收稿日期:1998-09-08 出版日期:1999-03-24 发布日期:1999-03-24
  • 通讯作者: 王德军
  • 作者简介:徐用军,男,34岁,副教授.
  • 基金资助:

    吉林省科技发展计划资助

A Study of Mechanism of Modified TiO2Photocatalysts for Photoreduction of CO2 with Surface Photovoltage Spectrum

XU Yong-Jun1, XIE Teng-Feng2, WANG De-Jun2, WANG Ying2, LI Tie-Jin2   

  1. 1. Daqing Staff and Workers University, Daqing, 163255;
    2. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1998-09-08 Online:1999-03-24 Published:1999-03-24

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摘要： 半导体TiO2作为光催化剂,已被广泛应用于光催化废水处理及光催化储能[1,2]等方面的研究.人们不断开发高活性的新型光催化剂并对其反应机理进行了探索性研究[3],希望通过表面负载Pd、Ru、Pt或Rh等贵金属的小岛式颗粒以传递光生电子(或光生空穴).

关键词: 二氧化钛, 光催化剂, 表面光电压, 二氧化碳还原

Abstract: The study of mechanism of modified TiO2photocatalysts for photoreduction of CO2with surface photovoltage spectrum(SPS) was reported for the first time. The results showed that a new surface photovoltaic response band appears in the SPS curve of Pd/TiO2or Pd/RuO2/TiO2in near IRregion, moreover, the stronger SPS response intensity in near IRis, the higher the catalytic activities of photoreduction of CO2.The surface state plays a role in the process of photocatalysis.

Key words: Titanium dioxide, Photocatalyst, Surface photovoltage, Reduction of carbon dioxide

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