Oxidation of PCE with a UV LED photocatalytic reactor

被引：87

作者：

Chen, DH ^{[1
]}

Ye, XJ ^{[1
]}

Li, KY ^{[1
]}

机构：

[1] Lamar Univ, Dept Chem Engn, Beaumont, TX 77710 USA

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2005年 / 28卷 / 01期

关键词：

D O I：

10.1002/ceat.200407012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper is the first to investigate photocatalysis using a cutting-edge and energy-efficient solid-state light source: Ultraviolet (UV) Light Emitting Diodes (LED's). UV LED's do not involve mercury vapor, can be driven with direct current (DC), and have a long lifetime of 100 000 hours. UV LED's with a peak wavelength of 375 rim were tested for perchloroethylene (PCE) photocatalytic oxidation over Degussa P-25 TiO2. At a UV light output of only 49 muW/cm(2). the designed reactor delivers a PCE conversion of up to 43%. If the UV LED price continues to drop, it is very likely that UV LED's will replace UV lamps as the favored light source in photocatalysis applications.

引用

页码：95 / 97

页数：3

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