Global photonic efficiency for phenol degradation and mineralization in heterogeneous photocatalysis

被引：34

作者：

Medina-Valtierra, J

Moctezuma, E

Sánchez-Cárdenas, M

Frausto-Reyes, C

机构：

[1] Tecnol Aguascalientes, Dept Ingn Bioquim, Aguas Calientes 20256, Mexico

[2] Univ Autonoma San Luis Potosi, Escuela Ciencias Quim, San Luis Potosi 78000, Mexico

[3] Ctr Invest Opt AC, Unidad Aguascalientes, Aguascalientes 20200, Mexico

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2005年 / 174卷 / 03期

关键词：

UV photocatalysis; phenol photocatalytic mineralization; titanium dioxide photocatalysts; relative photonic efficiencies; global photonic efficiency;

D O I：

10.1016/j.jphotochem.2005.03.020

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：

Simple kinetic model is proposed for fitting experimental data of degradation and total organic carbon (mineralization) of phenol. Reaction rates analysis of phenol in water are employed to compare different photocatalysts under the same experimental conditions. The global photonic efficiency for degradation and mineralization of phenol xi(g), is calculated to facilitate comparison with other photocatalysts or experimental systems. Under identical conditions of catalyst loading, pH and phenol concentration the most of photocatalysts presented a global efficiency much lower than that for a TiO2 standard photocatalyst named Degussa P-25. However, two photocatalysts prepared by different methods showed approximately the same global efficiency than the commercial material. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：246 / 252

页数：7

共 13 条

[11] Enhancement of the photocatalytic activity of TiO2 film via surface modification of the substrate [J].