CeO2 nanorods and gold nanocrystals supported on CeO2 nanorods as catalyst

被引：205

作者：

Huang, PX

Wu, F

Zhu, BL

Gao, XP ^{[1
]}

Zhu, HY

Yan, TY

Huang, WP

Wu, SH

Song, DY

机构：

[1] Nankai Univ, Dept Chem Mat, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China

[2] Beijing Inst Technol, Sch Chem Engn & Environm, Beijing 100081, Peoples R China

[3] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

[4] Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Res Program, Brisbane, Qld 4001, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 41期

关键词：

D O I：

10.1021/jp052978u

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：

The formation mechanism of uniform CeO(2) structure at the nanometer scale via a wet-chemical reaction is of great interest in fundamental study as well as a variety of applications. In this work, large-scale well-crystallized CeO(2) nanorods with uniform diameters in the range of 20-30 nm and lengths up to tens of micrometers are first synthesized through a hydrothermal synthetic route in 5 M KOH solution at 180 degrees C for 45 h without any templates and surfactants. The nanorod formation involves dehydration of CeO(2) nanoparticles and orientation growth along the (110) direction in KOH solution. Subsequently, gold nanoparticles with crystallite sizes between 10 and 20 nm are loaded on the surface of CeO(2) nanorods using HAuCl(4) solution as the gold source and NaBH(4) solution as a reducing agent. The synthesized Au/CeO(2) nanorods demonstrate a higher catalytic activity in CO oxidation than the pure CeO(2) nanorods.

引用

页码：19169 / 19174

页数：6

共 41 条

[1] Nanocrystalline CeO2 increases the activity of an for CO oxidation by two orders of magnitude [J].