Photoconversion of 4-nitrophenol in the presence of hydrazine with AgNPs-TiO2 nanoparticles prepared by the sol-gel method

被引：54

作者：

Hernandez-Gordillo, Agileo ^{[1
,2
]}

Arroyo, Missael ^{[1
]}

Zanella, R. ^{[3
]}

Rodriguez-Gonzalez, V. ^{[1
]}

机构：

[1] Inst Potosino Invest Cient & Tecnol, Div Mat Avanzados, San Luis Potosi 78216, Mexico

[2] Inst Politecn Nacl, CIIEMAD, Del Gustavo A Madero 07340, DF, Mexico

[3] Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2014年 / 268卷

关键词：

Hydrazine reactant; 4-Nitrophenol photoconversion; TIO2; sol-gel; AgNPs photoactivity; AROMATIC NITRO-COMPOUNDS; PHOTOCATALYTIC ACTIVITY; SILVER NANOPARTICLES; TITANIUM-DIOXIDE; AG NANOPARTICLES; REDUCTION; CATALYST; DEPOSITION; MATRIX; SIZE;

D O I：

10.1016/j.jhazmat.2013.12.069

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photocatalytic properties of functionalized TiO2 with silver nanoparticles (AgNPs) for the conversion of 4-nitrophenol to 4-aminophenol in the presence of hydrazine were investigated. The TiO2 semiconductor synthesized by the sol-gel method was functionalized with AgNPs at different loadings, and their structural and optical properties were characterized by several techniques. The functionalized TiO2 with 1.5 wt% AgNPs presented the highest photocatalytic activity for the conversion of 4-nitrophenol with appropriate hydrazine concentrations (0.5 M). The photoefficiency enhancement under UV light irradiation was attributed to the electron transfer from the TiO2 semiconductor surface to the adsorbed acceptor reactant (4-nitrophenol) through the deposited AgNPs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：84 / 91

页数：8

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