PHOTOELECTROCHEMICAL PROPERTIES ORF SULFIDIZED TIO2 ELECTRODES

被引：8

作者：

GUO, RJ ^{[1
]}

WANG, MH ^{[1
]}

TSO, TL ^{[1
]}

PERNG, TP ^{[1
]}

机构：

[1] NATL TSING HUA UNIV,DEPT CHEM,HSINCHU 300,TAIWAN

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1995年 / 20卷 / 07期

关键词：

D O I：

10.1016/0360-3199(94)E0047-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pure and Nb-doped TiO2 (with 0.05mol% Nb2O5) pellets were reacted with sulfur at 900 or 1000-degrees-C. The effect of substitution of sulfur for oxygen on the photoelectrochemical (PEC) properties were studied. The phases and microstructures before and after sulfidation were examined. For pure TiO2 sulfidation greatly improved the PEC performance. Reaction at a higher temperature for a longer time allowed more sulfidation and resulted in a higher PEC current. For Nb-doped TiO2, high-temperature sulfidation also induced segregation of Nb on the grain boundaries. The PEC properties of the sulfidized electrodes could be correlated with the extent of sulfidation and the change of microstructures.

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页码：561 / 566

页数：6

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