Facile Synthesis of CeO2 Nanospheres

被引：19

作者：

Ta Na ^{[1
,2
]}

Zhang Milin ^{[2
]}

Li Juan ^{[1
]}

Li Huaju ^{[1
]}

Li Yong ^{[1
]}

Shen Wenjie ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem & Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2008年 / 29卷 / 11期

基金：

中国国家自然科学基金;

关键词：

ceria; nanosphere; redox; carbon monoxide oxidation;

D O I：

10.1016/S1872-2067(09)60002-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ceria nanospheres with an average size of 320 nm were prepared by a urea-hydrothermal route. The ceria nanospheres had a core-shell structure constructed by nanoparticles and nanosheets that predominantly exposed the vertical bar 111 vertical bar planes. Urea hydrolysis produced CO32- and OH- species as precipitation agent and simultaneously produced ammonia bubbles that acted as a structure-directing agent for the formation of the CeO2 nanospheres. The redox properties and catalytic activity of the CeO2 nanospheres were examined by hydrogen temperature-programmed reduction and CO oxidation, respectively.

引用

页码：1070 / 1072

页数：3

共 9 条

[1] Oxygen mobility in CeO2 and CexZr(1-x)O2 compounds:: Study by CO transient oxidation and 18O/16O isotopic exchange [J].