Roles of hydroxyl and oxygen vacancy of CeO2 center dot xH(2)O in Pd-catalyzed ethanol electro-oxidation

doi:10.1007/s11426-021-1220-2

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	Roles of hydroxyl and oxygen vacancy of CeO2 center dot xH(2)O in Pd-catalyzed ethanol electro-oxidation
	Z. Y. Li; J. F. Li; Z. X. Zheng; K. H. Jiang; T. R. Zheng; D. M. Wang; H. Wei; Z. M. Shi; X. T. Li and H. B. Chu
刊名	Science China-Chemistry
	2022
卷号	65 期号:5 页码:877-884
ISSN号	1674-7291
DOI	10.1007/s11426-021-1220-2
英文摘要	In the field of noble metal-catalyzed alcohol electro-oxidation reaction (AOR), huge attention is paid on the composition, size, facet, and structure of the metals, while the support engineering should also be emphasized. CeO2 has been widely used as an unique support in AOR, primarily due to its abundant oxygen vacancies (O-v). Herein, we report CeO2 center dot xH(2)O nanoparticles with both massive hydroxyl groups (OH) and O-v remarkably enhance the catalytic activity and stability of Pd toward ethanol oxidation reaction (EOR). The CO striping experiments and density functional theory (DFT) calculations suggest that OH and O-v on CeO2 center dot xH(2)O surface bring about a large downshift of Pd d-band center and a significant weakening of CO absorption on Pd. Moreover, OH and O-v also play synergic roles in the removal of toxic intermediates. Consequently, the important roles of OH and O-v of CeO2 center dot xH(2)O are confirmed in Pd-catalyzed EOR. The facile CeO2 center dot xH(2)O-enhanced strategy can contribute to the catalyst design for other energy conversion reactions.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/67069]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. Y. Li,J. F. Li,Z. X. Zheng,et al. Roles of hydroxyl and oxygen vacancy of CeO2 center dot xH(2)O in Pd-catalyzed ethanol electro-oxidation[J]. Science China-Chemistry,2022,65(5):877-884.
APA	Z. Y. Li.,J. F. Li.,Z. X. Zheng.,K. H. Jiang.,T. R. Zheng.,...&X. T. Li and H. B. Chu.(2022).Roles of hydroxyl and oxygen vacancy of CeO2 center dot xH(2)O in Pd-catalyzed ethanol electro-oxidation.Science China-Chemistry,65(5),877-884.
MLA	Z. Y. Li,et al."Roles of hydroxyl and oxygen vacancy of CeO2 center dot xH(2)O in Pd-catalyzed ethanol electro-oxidation".Science China-Chemistry 65.5(2022):877-884.