高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (7): 1075.

• 论文 • 上一篇    下一篇

Ru(bpy)2(NCS)2染料敏化CdS/Zn2+TiO2复合半导体纳米多孔膜的光电化学

张莉, 王艳芹, 杨迈之, 高恩勤, 蔡生民   

  1. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:1999-05-18 出版日期:2000-07-24 发布日期:2000-07-24
  • 通讯作者: 杨迈之(1956年出生),女,博士,教授,从事光电化学和金属腐蚀与防护研究.
  • 基金资助:

    国家自然科学基金(批准号:29773003);安徽省自然科学研究基金(批准号:99j10211)资助

Photoelectrochemistry of CdS/Zn2+-TiO2 Composite Semiconductor Nanoporous Films Sensitized by Ru(bpy)2(NCS)2 Dye

ZHANG Li, WANG Yan-Qin, YANG Mai-Zhi, GAO En-Qin, CAI Sheng-Min   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:1999-05-18 Online:2000-07-24 Published:2000-07-24

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摘要： 采用水热法合成了Zn2+离子掺杂的TiO2纳米粒子[Zn2+掺杂量0.5%(物质的量的比)],并用光电化学方法研究了经Ru(bpy)2(NCS)2(bpy=2,2′bipyridine4,4′dicarboxylicacid)分别敏化的掺杂Zn2+的TiO2电极(简写为Zn2+-TiO2)和CdS/Zn2+-TiO2复合半导体纳米多孔膜电极的光电化学行为.实验证明Ru(bpy)2(NCS)2敏化CdS/Zn2+-TiO2复合半导体纳米多孔膜电极比单独敏化Zn2+-TiO2电极的光电转换效率高,且敏化Zn2+TiO2电极和敏化CdS/Zn2+TiO2复合半导体纳米多孔膜电极比Zn2+-TiO2电极的光电流产生的起始波长都向长波方向移动.在360600nm范围内,Ru(bpy)2(NCS)2敏化CdS/Zn2+-TiO2复合半导体纳米多孔膜电极光电转换效率最好.

关键词: 光敏化, 掺杂TiO2纳米多孔膜电极, 复合半导体纳米多孔膜电极, 光电化学

Abstract: The Zn2+-doped TiO2 nanoparticles were prepared with hydrothermal method. The photoelectrochemical properties of Zn2+-doped TiO2 nanoporous film electrode sensitized by Ru(bpy)2·(NCS)2, and Zn2+-TiO2/CdScomposite semiconductor nanoporous films sensitized by Ru(bpy)2(NCS)2 were studied respectively. Doping, sensitizing and forming composite semiconductor particles produced red-shifts on the photocurrent action spectra. The conversion efficiency of light to electricity for the Zn2+-TiO2/CdScomposite semiconductor nanoporous films was greatly improved and reached maximum.

Key words: Photosensitization, Doped TiO2 nanoporous-film electrodes, Composite semiconductor nanoporous film electrodes, Photoelectrochemistry

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