Facile synthesis of Au embedded CuOx-CeO2 core/shell nanospheres as highly reactive and sinter-resistant catalysts for catalytic hydrogenation of p-nitrophenol

doi:10.1007/s12274-020-2806-9

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Facile synthesis of Au embedded CuOx-CeO2 core/shell nanospheres as highly reactive and sinter-resistant catalysts for catalytic hydrogenation of p-nitrophenol
	Wu, K ; Wang, XY ; Guo, LL ; Xu, YJ ; Zhou, L ; Lyu, ZY ; Liu, KY ; Si, R ; Zhang, YW ; Sun, LD
刊名	NANO RESEARCH
	2020
卷号	13 期号:8 页码:2044-2055
关键词	TOTAL-ENERGY CALCULATIONS GOLD NANOPARTICLES PLATINUM NANOPARTICLES CRYSTAL PLANE REDUCTION CERIA NANOCOMPOSITES CO 4-NITROPHENOL NANOCATALYST
ISSN号	1998-0124
DOI	10.1007/s12274-020-2806-9
文献子类	期刊论文
英文摘要	Exploring cost-effective catalysts with high catalytic performance and long-term stability has always been a general concern for environment protection and energy conversion. Here, Au nanoparticles (NPs) embedded CuOx-CeO2 core/shell nanospheres (Au@CuOx-CeO2 CSNs) have been successfully prepared through a versatile one-pot method at ambient conditions. The spontaneous auto-redox reaction between HAuCl4 and Ce(OH)3 in aqueous solution triggered the self-assembly growth of micro-/ nanostructural Au@CuOx-CeO2 CSNs. Meanwhile, the CuOx clusters in Au@CuOx-CeO2 CSNs are capable of improving the anti-sintering ability of Au NPs and providing synergistic catalysis benefits. As a result, the confined Au NPs exhibited extraordinary thermal stability even at a harsh thermal condition up to 700 degrees C. In addition, before and after the severe calcination process, Au@CuOx-CeO2 CSNs can exhibit enhanced catalytic activity and excellent recyclability towards the hydrogenation of p-nitrophenol compared to previously reported nanocatalysts. The synergistic catalysis path between Au/CuOx/CeO2 triphasic interfaces was revealed by density functional theory (DFT) calculations. The CuOx clusters around the embedded Au NPs can provide moderate adsorption strength of p-nitrophenol, while the adjacent CeO2-supported Au NPs can facilitate the hydrogen dissociation to form H* species, which contributes to achieve the efficient reduction of p-nitrophenol. This study opens up new possibilities for developing high-efficient and sintering-resistant micro-/nanostructural nanocatalysts by exploiting multiphasic systems.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32883]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China 4.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wu, K,Wang, XY,Guo, LL,et al. Facile synthesis of Au embedded CuOx-CeO2 core/shell nanospheres as highly reactive and sinter-resistant catalysts for catalytic hydrogenation of p-nitrophenol[J]. NANO RESEARCH,2020,13(8):2044-2055.
APA	Wu, K.,Wang, XY.,Guo, LL.,Xu, YJ.,Zhou, L.,...&Yan, CH.(2020).Facile synthesis of Au embedded CuOx-CeO2 core/shell nanospheres as highly reactive and sinter-resistant catalysts for catalytic hydrogenation of p-nitrophenol.NANO RESEARCH,13(8),2044-2055.
MLA	Wu, K,et al."Facile synthesis of Au embedded CuOx-CeO2 core/shell nanospheres as highly reactive and sinter-resistant catalysts for catalytic hydrogenation of p-nitrophenol".NANO RESEARCH 13.8(2020):2044-2055.