摘要
以水、乙醇和乙二醇为溶剂,采用溶剂热法可控制备了0,1,3维CeO2.结果表明,0维CeO2由0.2～0.5μm纳米粒子组成;1维CeO2是直径为25～30μm,长约500μm的六方棒;松针型的3维CeO2是由以纳米粒子为单元构成的直径为1～5μm,长约50μm的光滑棒组成,其比表面积高达234m2/g.将0,1,3维CeO2负载的CuO催化剂用于CO氧化反应中,发现以1维和3维CeO2为载体时,CuO催化剂具有较大的比表面积和较强的表面还原性,因而表现出较高的催化活性.
A method to synthesize zero,one,and three dimensional（0D,1D,3D）CeO2 from single crystal cerium formate by a surfac-tant-free route using H2O,ethanol and ethylene glycol as solvents is shown.0D CeO2 was composed of aggregated particles of 0.2-0.5 μm.1D CeO2 was hexagonal rods that were 25-30 μm in width and more than 500 μm in length.The pine needle shaped 3D CeO2 was assembled from smooth rods of 1 to 5 μm diameter and up to 50 μm length that had CeO2 nanoparticles as building units to give 3D mi-cro/nanocomposite structures with a high BET surface area of 234 m2/g.Both 5 wt% CuO/1D CeO2 and 5 wt% CuO/3D CeO2 exhibited high catalytic activities for CO conversion due to the high BET surface area and the facile reducibility of surface CeO2.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第8期1336-1341,共6页
基金
supported by the National Natural Science Foundation of China(20603016)
the National Basic Research Program of China(973Program,2009CB220010)
the Scientific Research Fund of Liaoning Provincial Education Department(L2010222)
the Liaoning Provincial Science&Technology Project of China(20071074)~~
关键词
氧化铈
氧化铜
一氧化碳
氧化
纳米结构
拉曼光谱
ceria
copper oxide
carbon monoxide
oxidation
nanostructure
Raman spectroscopy
