Fabrication of nanocrystalline LaFeO3: An efficient sol-gel auto-combustion assisted visible light responsive photocatalyst for water decomposition

被引：283

作者：

Parida, K. M. ^{[1
]}

Reddy, K. H. ^{[1
]}

Martha, S. ^{[1
]}

Das, D. P. ^{[1
]}

Biswal, N. ^{[1
]}

机构：

[1] CSIR Inst Minerals & Mat Technol, Colloids & Mat Chem Dept, Bhubaneswar 751013, Orissa, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 22期

关键词：

Sol-gel auto combustion method; Perovskite type; Orthorhombic LaFeO3; Nanoparticles; Water decomposition; PHOTOINDUCED CHARGE PROPERTY; POLYMERIZABLE COMPLEX METHOD; CATALYTIC-ACTIVITY; H-2; EVOLUTION; STABLE PHOTOCATALYST; SULFITE SOLUTIONS; IRRADIATION; PEROVSKITE; OXIDATION; SEMICONDUCTOR;

D O I：

10.1016/j.ijhydene.2010.08.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Synthesis of nano photocatalysts LaFeO3 with orthorhombic perovskite structure by sol-gel auto combustion method was demonstrated The samples were characterized by PXRD, SEM HRTEM XPS and optical absorption studies Photocatalytic water decomposition over LaFeO3 nanoparticles activated at various temperatures without any co catalyst were investigated under visible light irradiation (lambda > > 420 nm) Highest amount of H-2 and O-2 evolved in 180 mm over the LaFeO3 activated at 500 degrees C was recorded to be 1290 mu mol and 640 mu mol respectively having apparent quantum efficiency (AQE) 8 07% The pronounced activity of nano LaFeO3 samples towards water decomposition was consistent with BET surface area and particle size analyses (C) 2010 Professor T Nejat Veziroglu Published by Elsevier Ltd All rights reserved

引用

页码：12161 / 12168

页数：8

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