Photocatalytic Degradation of Methylene Blue Dye Using Ultraviolet Light Emitting Diodes

被引：263

作者：

Tayade, Rajesh J. ^{[1
]}

Natarajan, Thillai Sivakumar ^{[1
]}

Bajaj, Hari C. ^{[1
]}

机构：

[1] CSMCRI, CSIR, Discipline Inorgan Mat & Catalysis, Bhavnagar 364002, Gujarat, India

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2009年 / 48卷 / 23期

关键词：

AZO-DYE; HETEROGENEOUS PHOTOCATALYSIS; ORGANIC CONTAMINANTS; AQUEOUS-SOLUTION; THIN-FILMS; TIO2; OXIDATION; UV; WATER; DECOLORIZATION;

D O I：

10.1021/ie9012437

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study was focused oil the application of Ultraviolet light emitting diodes (UV-LED) as an alternate source for the photocatalytic degradation of methylene blue (MB), which was used as a model compound. A simple reactor arrangement was made to carry Out the photocatalytic degradation of methylene blue dye. The photocatalytic activity of P-25 Degussa TiO2 was evaluated using UV-LED reactor. The decomposition of MB dye in aqueous solution by TiO2 photocatalytic process with the UV-LED was found to be technically feasible. The effects of various parameters such as catalyst loading, initial dye concentration, pH, and addition of H2O2 oil decolorization and degradation have been investigated to find the optimum conditions. The complete mineralization of MB dye (3.12 x 10(-5) M) was confirmed by chemical oxygen demand analysis. Results demonstrated that the UV-LED/TiO2 process can effectively degrade methylene blue dye with optimum conditions.

引用

页码：10262 / 10267

页数：6

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