Photocatalyzed degradation on a TiO2-coated quartz crystal micro-balance.: Adsorption/desorption processes in real time in the degradation of benzoic acid and salicylic acid

被引：24

作者：

Hidaka, Hisao

Honjo, Haruo

Horikoshi, Satoshi

Serpone, Nick

机构：

[1] Meisei Univ, Frontier Res Ctr Global Environm Sci, Hino, Tokyo 1918506, Japan

[2] Univ Pavia, Dipartimento Chim Organ, I-27100 Pavia, Italy

来源：

CATALYSIS COMMUNICATIONS | 2006年 / 7卷 / 06期

关键词：

D O I：

10.1016/j.catcom.2005.08.010

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：

The photocatalytic degradations of benzoic acid, phenol and salicylic acid were examined subsequent to in situ adsorption/desorption of the organic substrates on a TiO2-coated quartz crystal microbalance (QCM). The amount of substrate adsorbed from the bulk aqueous solution on the TiO2-coated QCM sensor was investigated at different pH under dark conditions. The order of adsorption was salicylic acid > phenol similar to benzoic acid oil the acidic side; phenol > benzoic acid > salicylic acid under neutral conditions; benzoic acid > phenol similar to salicylic acid in alkaline media. Salicylic acid was ail intermediate in the photodegradation of benzoic acid. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：331 / 335

页数：5

共 14 条

[1] Spectral dependencies of the quantum yield of photochemical processes on the surface of nano/micro-particulates of wide-band-gap metal oxides. IV. Theoretical modeling of the activity and selectivity of semiconductor photocatalysts with inclusion of a subsurface electric field in the space charge region [J].