Phenol photodegradation on platinized-TiO2 photocatalysts related to charge-carrier dynamics

被引：152

作者：

Emilio, CA

Litter, MI

Kunst, M

Bouchard, M

Colbeau-Justin, C

机构：

[1] Univ Paris 13, CNRS, UPR 1311, Lab Ingn Mat & Hautes Press, F-93430 Villetaneuse, France

[2] Comis Nacl Energia Atom, Ctr Atom Constituyentes, Unidad Actividad Quim, RA-1650 Buenos Aires, DF, Argentina

[3] Hahn Meitner Inst Berlin GmbH, Abt Solare Energet, D-14109 Berlin, Germany

来源：

LANGMUIR | 2006年 / 22卷 / 08期

关键词：

D O I：

10.1021/la051962s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three commercial TiO2 compounds (Degussa P25, Sachtleben UV100, and Millenium PC50) and their platinized forms have been studied by the time-resolved microwave conductivity (TRMC) method to follow their charge-carrier dynamics and to relate it to the photocatalytic activity for phenol degradation in TiO2 aqueous suspensions. The degradation reaction has been studied in detail, following the time evolution of the concentration of phenol and its intermediates by liquid chromatography. The results show that platinization has a distinct influence on the commercial compounds, decreasing globally the activity of P25 and increasing the activity of PC50 and UV100. An influence of charge-carrier lifetimes on the photoactivity of pure and platinized TiO2 samples has been evidenced.

引用

页码：3606 / 3613

页数：8

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