title: Novel CeO2 yolk-shell structures loaded with tiny Au nanoparticles for superior catalytic reduction of p-nitrophenol.
abstract: Direct fabrication of core-shell or yolk-shell functional nanomaterials via a facile template-free method remains a challenge. In this work, we present a novel approach that involves straightforward chemical transformation and thermal treatment of the infinite coordination polymer particles to obtain composition-tunable CeO(2) yolk-shell structures. Uniform CeO(2) yolk-shell hollow spheres with a high surface area are promising support materials for tiny gold nanoparticles (ca. 4 nm), forming Au-CeO(2) nanocomposites which exhibit a remarkable catalytic activity and high stability for the reduction of p-nitrophenol. A possible mechanism for the formation of CeO(2) yolk-shell microspheres is also proposed.
authors.affiliation: Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China.
authors.forename: Cong-Min
authors.initials: CM
authors.lastname: Fan
authors.forename: Lin-Fei
authors.initials: LF
authors.lastname: Zhang
authors.forename: Sha-Sha
authors.initials: SS
authors.lastname: Wang
authors.forename: Dong-Hong
authors.initials: DH
authors.lastname: Wang
authors.forename: Li-Qiang
authors.initials: LQ
authors.lastname: Lu
authors.forename: An-Wu
authors.initials: AW
authors.lastname: Xu
mesh_terms: D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D009596:Nitrophenols / Q000737:chemistry*; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry; D013499:Surface Properties
chemical_list: D009596:Nitrophenols; D011108:Polymers; D002563:Cerium; C030583:ceric oxide; D006046:Gold; C024836:4-nitrophenol