高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (5): 934.

• 研究论文 • 上一篇    下一篇

不同取代基卟啉衍生物敏化纳米TiO2多孔膜电极的光电性质研究

潘凯, 刘兆阅, 徐金杰, 于苗, 王德军, 白玉白, 李铁津   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2003-03-03 出版日期:2004-05-24 发布日期:2004-05-24
  • 通讯作者: 白玉白(1941年出生),男,教授,博士生导师,从事凝聚态物质的光物理和光化学研究.E-mail:yubai@mai.ljlu.edu.cn E-mail:yubai@mai.ljlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20073016,29973026);国家“九七三”项目计划资助

Photoelectrochemical Study of Nanoporous TiO2 Electrodes Sensitized by Porphyrin Derivatives with Different Substituents

PAN Kai, LIU Zhao-Yue, XU Jin-Jie, YU Miao, WANG De-Jun, BAI Yu-Bai, LI Tie-Jin   

  1. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2003-03-03 Online:2004-05-24 Published:2004-05-24

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摘要： 采用含有不同取代基的卟啉衍生物四羟基苯基卟啉(THPP)和四羧基苯基卟啉(TCPP)分别对纳米TiO2多孔膜电极进行敏化.对两种敏化电极进行了UV-Vis光谱、FTIR光谱和X射线光电子能谱(XPS)测试.结果表明,TiO2与TCPP的作用比与THPP的作用强.在相同浸泡条件下,TiO2电极吸附TCPP的量大于吸附THPP的量.将两种敏化电极分别组装成光电化学电池,从正背两个方向照射光电池,研究它们在不同照射方向下的光电流响应.从光电化学电池的I-V曲线计算TCPP敏化的光电化学池的总光电转换效率(η)为0.13%,而THPP敏化的光电化学电池的η为0.06%.

关键词: 卟啉衍生物, 纳米TiO2多孔膜电极, 光电流作用谱, 总光电转换效率(&eta, )

Abstract: Nanoporous TiO2 electrodes were sensitized by different porphyrin derivatives, terahydro- xyphenyl porphyrin(THPP) and teracarboxylphenyl porphyrin(TCPP). Both kinds of the sensitized electrodes were characterized by UV-Vis, FTIR and XPS. The results show that the interaction between TiO2 and TCPP was stronger than that between TiO2 and THPP. Under the same soaking conditions the amount of TCPP adsorbed by TiO2 electrode was more than that of THPP adsorbed by TiO2 electrode. Both kinds of the sensitized electrodes were assembled to photoelectrochemical cells. The photocurrent responses of the photoelectrochemical cell under different illumination directions were studied. Calculated from the current-voltage curve of photoelectrochemical cells, the overall light-to-electric energy conversion yield(η) of TCPP-sensitized cell was 0.13%, while the conversion efficiency of THPP-sensitized cell was 0.06%.

Key words: Porphyrin derivatives, Nanoporous TiO2 film electrodes, Photocurrent action spectra, Total light-to-electric energy conversion yield(η)

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