Synthesis of platinum nanoparticles in microemulsions and their catalytic activity for the oxidation of carbon monoxide

被引：56

作者：

Yadav, OP

Palmqvist, A

Cruise, N

Holmberg, K ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Appl Surface Chem, SE-41296 Gothenburg, Sweden

[2] Haryana Agr Univ, Dept Chem, Hisar 125004, Haryana, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2003年 / 221卷 / 1-3期

关键词：

nanoparticles; microemulsion; catalysis; carbon monoxide;

D O I：

10.1016/S0927-7757(03)00141-9

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：

Platinum nanoparticles have been prepared by the reduction of metal ions with hydrazine in oil-water microemulsions consisting of sodium bis(2-ethylhexyl)sulphosuccinate (AOT)+cyclohexane+water of varying composition. The catalytic efficiency of the synthesized metal nanoclusters has been tested for oxidation of carbon monoxide. Effects of the nature of the platinum salt, [H2O]/[surfactant] ratio in the microemulsions and the addition of polymers on the catalytic efficiency of the synthesized metal nanoparticles have been investigated. Catalytic oxidation of CO gas was carried out in a vertical quartz tube connected to a quadrupole mass spectrometer. Whereas, using pure alumina as a catalyst, complete conversion of CO to CO2 was observed at 325 degreesC, platinum nanoparticles adsorbed on alumina was found to carry out such conversion at 145 degreesC. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：131 / 134

页数：4

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