Fast photocatalytic degradation of methylene blue dye using a low-power diode laser

被引：55

作者：

Liu, Xianhua ^{[1
]}

Yang, Yulou ^{[1
]}

Shi, Xiaoxuan ^{[1
]}

Li, Kexun ^{[2
]}

机构：

[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China

[2] Nankai Univ, Sch Environm Sci & Engn, Tianjin 300074, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2015年 / 283卷

关键词：

Visible laser; Photocatalysis; Methylene blue; Degradation; Decolorization; LIGHT-INDUCED DEGRADATION; VISIBLE-LIGHT; HIGHLY EFFICIENT; DECOLORIZATION; NANOPARTICLES; TIO2; GOLD; ZNO; CONVERSION; REMOVAL;

D O I：

10.1016/j.jhazmat.2014.09.031

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study focused on the application of diode lasers as alternative light sources for the fast photocatalytic degradation of methylene blue. The photocatalytic decomposition of methylene blue in aqueous solution under 443 nm laser light irradiation was found to be technically feasible using Ag/AgCl nanopartides as photocatalysts. The effects of various experimental parameters, such as irradiation time, light source, catalyst loading, initial dye concentration, pH, and laser energy on decolorization and degradation were investigated. The mineralization of methylene blue was confirmed by chemical oxygen demand analysis. The results demonstrate that the laser-induced photocatalytic process can effectively degrade methylene blue under the optimum conditions (pH 9.63, 4 mg/L MB concentration, and 1.4 g/L Ag/AgCl nanoparticles). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：267 / 275

页数：9

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