Effect of microemulsion composition on textural and photocatalytic activity of titania nanomaterial

被引：24

作者：

Mohapatra, P.

Mishra, T.

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

机构：

[1] CSIR, Reg Res Lab, Colloids & Mat Chem Cell, Bhubaneswar 751013, Orissa, India

[2] CSIR, Natl Met Lab, AC&C Div, Jamshedpur, Bihar, India

来源：

APPLIED CATALYSIS A-GENERAL | 2006年 / 310卷

关键词：

microemulsion; particle size; 4-nitrophenol; photodecomposition; photoreduction; hexavalent chromium;

D O I：

10.1016/j.apcata.2006.05.041

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：

Nanosized titania powders were synthesized by the reverse microemulsion (water/CTAB-butanol/cyclohexane) process varying the water content in the range of 5-30 wt.%. Materials were characterized by TEM, XRD, FT-IR, DRS, BET surface area measurement. Average crystallite size, particle size and anatase to rutile ratio was correlated with the photocatalytic decomposition of 4-nitropheol and hexavalent chromium reduction. Photocatalytic activity was evaluated by varying the pH, time of reaction, catalyst amount, etc. in aqueous phase. Highest hexavalent chromium reduction and decomposition of 4-nitrophenol was observed with the titania derived from the microemulsion having 15 wt.% of water. Prepared catalysts were found to be active in presence of sunlight. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：183 / 189

页数：7

共 16 条

[1] EFFICIENT PHOTOCATALYSIS OF THE IRREVERSIBLE ONE-ELECTRON AND 2-ELECTRON REDUCTION OF HALOTHANE ON PLATINIZED COLLOIDAL TITANIUM-DIOXIDE IN AQUEOUS SUSPENSION [J].