Defect Engineering in Cubic Cerium Oxide Nanostructures for Catalytic Oxidation

被引：314

作者：

Lawrence, Neil J. ^{[1
]}

Brewer, Joseph R. ^{[1
]}

Wang, Lu ^{[2
]}

Wu, Tai-Sing ^{[3
]}

Wells-Kingsbury, Jamie ^{[1
]}

Ihrig, Marcella M. ^{[1
]}

Wang, Gonghua ^{[1
]}

Soo, Yun-Liang ^{[3
,4
]}

Mei, Wai-Ning ^{[2
,5
]}

Cheung, Chin Li ^{[1
,5
]}

机构：

[1] Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA

[2] Univ Nebraska, Dept Phys, Omaha, NE 68182 USA

[3] Natl Tsing Hua Univ, Hsinchu, Taiwan

[4] Natl Synchrotron Radiat Res Ctr, Taipei, Taiwan

[5] Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 07期

基金：

美国国家科学基金会;

关键词：

Heterogeneous catalysis; nanostructures; cerium oxide; oxygen vacancy defect; catalyst activation; OXYGEN VACANCIES; CO OXIDATION; CEO2; NANOCRYSTALS; REDUCTION; NANOTUBES; SURFACES; NANORODS; SPECTRA; XPS;

D O I：

10.1021/nl200722z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Traditional nanostructured design of cerium oxide catalysts typically focuses on their shape, size, and elemental composition. We report a different approach to enhance the catalytic activity of cerium oxide nanostructures through engineering high density of oxygen vacancy defects in these catalysts without dopants. The defect engineering was accomplished by a low pressure thermal activation process that exploits the nanosize effect of decreased oxygen storage capacity in nanostructured cerium oxides.

引用

页码：2666 / 2671

页数：6

共 40 条

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