化学学报 ›› 1999, Vol. 57 ›› Issue (7): 685-691. 上一篇    下一篇

研究论文

PbS/RL~2(NCS)~2复合敏化SnO~2纳米多孔膜电极的光电化学研究

李卫华;郝彦忠;乔学斌;王艳芹;杨迈之;程虎民;蔡生民   

  1. 北京大学化学与分子工程学院
  • 发布日期:1999-07-15

A photoeletrochemical study of sno~2 nanoporous film electrode sensitized by composite PbS/RuL~2(NCS)~2

Li Weihua;Hao Yanzhong;Qiao Xuebin;Wang Yanqin;Yang Maizhi;Cheng Humin;Cai Shengmin   

  • Published:1999-07-15

用光电化学方法和UV-vis吸收光谱研究了PbS和Rul~2(NCS)~2(L=2,2'--bipydine--4,4'-dicarboxylicacid)复合敏化SnO~2纳米晶多孔膜电极的光电化学行为.实验表明,复合敏化比用PbS或RuL~2(NCS)~2分别单独敏化的效果好,不仅使电极的光吸收拓展到可见光区,而且复合敏化显著提高了光电转换效率,并讨论了复合敏化电极的电荷传输机理。

关键词: 硫化铅, 二氧化锡, 紫外分光光度法, 钌络合物, 联吡啶P, 光敏化, 光电化学

The photoelectrochemical behavior of SnO~2 nanoporous film electrode sensitized from composite PbS/RuL~2(NCS)~2 was investigated by photoelectrochemical methods and UV--vis absorption spectroscopy. The results showed that the photosensitization of composite PbS and Rul~2 (NCS)~2 for SnO~2 nanoporous film elertode largely improved the conversion efficiency of light to electricity and was superior to the photosenitization of PbS or of RuL~2 (NCS)~2 respectively. The charge transfer mechanism of compositely sensitzed electrode was discussed in detail.

Key words: LEAD SULFIDE, TIN DIOXIDE, ULTRAVIOLET SPECTROPHOTOMETRY, RUTHENIUM COMPLEX, BIPYRIDINE P, PHOTOSENSITIZATION, PHOTO-ELECTROCHEMISTRY

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