PHOTOSENSITIZATION OF TITANIUM(IV) OXIDE WITH TRIS(2,2'-BIPYRIDINE)RUTHENIUM(II) CHLORIDE - SURFACE-STATES OF TITANIUM(IV) OXIDE

被引：75

作者：

HAMNETT, A ^{[1
]}

DAREEDWARDS, MP ^{[1
]}

WRIGHT, RD ^{[1
]}

SEDDON, KR ^{[1
]}

GOODENOUGH, JB ^{[1
]}

机构：

[1] INORGAN CHEM LAB,OXFORD OX1 3QR,ENGLAND

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1979年 / 83卷 / 25期

关键词：

D O I：

10.1021/j100488a020

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：

Investigation of the photosensitization of single-crystal TiO2 by [Ru(bpy)3]Cl2 (where bpy = 2,2′-bipyridine) has revealed the existence of a slow-rise-time cathodic photocurrent in addition to the fast-rise-time anodic photocurrent reported by Clark and Sutin. Phenomenological analysis of the experiment provides a satisfactory quantitative explanation based on a modulation of an ongoing dark current by energy transfer from the dye to the solid. Two new experiments and an extensive literature implicate surface O2- ions as the molecular species responsible for the slow kinetics. Some implications of these results for the photoelectrolysis of water by sunlight are also indicated. © 1979 American Chemical Society.

引用

页码：3280 / 3290

页数：11

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