Femtosecond diffuse reflectance spectroscopy of aqueous Titanium(IV) oxide suspension: Correlation of electron-hole recombination kinetics with photocatalytic activity

被引：112

作者：

Ohtani, B ^{[1
]}

Bowman, RM

Colombo, DP

Kominami, H

Noguchi, H

Uosaki, K

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Chem, Phys Chem Lab, Sapporo, Hokkaido 0600810, Japan

[2] Univ Kansas, Dept Chem, Lawrence, KS 66045 USA

[3] Kinki Univ, Fac Sci & Engn, Dept Appl Chem, Higashiosaka, Osaka 5778502, Japan

来源：

CHEMISTRY LETTERS | 1998年 / 07期

关键词：

D O I：

10.1246/cl.1998.579

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pump-probe diffuse reflectance measurements were carried out on particulate titanium(IV) oxide photocatalysts in the form of aqueous suspension and dry powder. A linear relation between second-order rate constants of electron-hole recombination for the suspension and powder systems was seen by analyses of decay profile of charge carriers. Presence of air gave negligible effect on the recombination kinetics, but loading of platinum (Pt) significantly reduced the rate constant.

引用

页码：579 / 580

页数：2

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