Optimization of physico-chemical parameters for the photo-oxidation of neutral red on the spinel Co2SnO4

被引：19

作者：

Bouchaaba, H. ^{[1
]}

Bellal, B. ^{[2
]}

Maachi, R. ^{[1
]}

Trari, M. ^{[2
]}

Nasrallah, N. ^{[1
]}

Mellah, A. ^{[3
]}

机构：

[1] Fac Mech & Engn Proc USTHB, Lab Engn React, BP 32, Algiers, Algeria

[2] Fac Chem USTHB, Lab Storage & Valorizat Renewable Energies, BP 32, Algiers, Algeria

[3] Nucl Res Ctr Algriers, BP 399, Algiers, Algeria

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2016年 / 58卷

关键词：

Spinel Co2SnO4; Neutral red; Sunlight; Kinetic; Langmuir-Hinshelwood model; PHOTOCATALYTIC ACTIVITY; HYDROGEN-PRODUCTION; COBALT ADSORPTION; FACILE SYNTHESIS; WASTE-WATER; DECONTAMINATION; NANOPARTICLES; DEGRADATION; REDUCTION; EQUILIBRIUM;

D O I：

10.1016/j.jtice.2015.06.011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The spinel Co2SnO4 is prepared by chemical route to assess its feasibility for the oxidation of neutral red under visible illumination. The diffuse reflectance gives a band gap of 1.72 eV, properly matched to the sun spectrum. The electrons in the conduction band (0.16 V-SCE), determined from the capacitance measurement, permit the formation of O-2(-) radicals, responsible of the neutral red oxidation. The dye concentration, catalyst dose, agitation speed and light flux are optimized. A degradation of 85% is obtained under sunlight within 45 min for 10 mg/L concentration. The oxidation follows a pseudo second order kinetic with an apparent rate constant of 11.5 x 10(-3) L/mg/min according to the Langmuir-Hinshelwood model. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：310 / 317

页数：8

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