Defect engineering in cubic cerium oxide nanostructures for catalytic oxidation.

Lawrence, Neil J; Brewer, Joseph R; Wang, Lu; Wu, Tai-Sing; Wells-Kingsbury, Jamie; Ihrig, Marcella M; Wang, Gonghua; Soo, Yun-Liang et al. · Nano Lett · 2011

basic_science · Level V

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Abstract

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.

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