TiO2@carbon core-shell nanostructure supports for platinum and their use for methanol electrooxidation

被引：55

作者：

Lee, Jong-Min ^{[1
]}

Han, Sang-Beom ^{[1
]}

Kim, Jy-Yeon ^{[1
]}

Lee, Young-Woo ^{[1
]}

Ko, A-Ra ^{[1
]}

Roh, Bumwook ^{[2
]}

Hwang, Inchul ^{[2
]}

Park, Kyung-Won ^{[1
]}

机构：

[1] Soongsil Univ, Dept Chem & Environm Engn, Seoul 156743, South Korea

[2] Hyundai Motor Co, Mabuk Ri, Gyeonggi Do, South Korea

来源：

CARBON | 2010年 / 48卷 / 08期

关键词：

CATALYSTS; OXIDATION; NANOPARTICLES; PERFORMANCE; ELECTROCATALYSTS; REDUCTION; TIO2;

D O I：

10.1016/j.carbon.2010.03.004

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：

Nanostructures consisting of TiO2 particles as a core and carbon as a shell (TiO2@C) were prepared by heat treatment of TiO2 nanoparticles at 700 or 900 degrees C in a methane atmosphere. x-ray diffraction and transmission electron microscopy showed that a carbon shell layer was formed whose thickness increased with increasing reaction temperature. These structures were used as supports for platinum nanoparticles and the hybrid particles exhibit improved catalytic activity and stability toward methanol electrooxidation compared to Pt on a carbon black (Vulcan XC-72R). It is likely that enhanced catalytic properties of the Pt on TiO2@C could be due to the stability of the core-shell support in comparison with carbon black support. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2290 / 2296

页数：7

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