title: One-step Synthesis of Core-Gold/Shell-Ceria Nanomaterial and Its Catalysis for Highly Selective Semihydrogenation of Alkynes.
abstract: We report a facile synthesis of new core-Au/shell-CeO2 nanoparticles (Au@CeO2) using a redox-coprecipitation method, where the Au nanoparticles and the nanoporous shell of CeO2 are simultaneously formed in one step. The Au@CeO2 catalyst enables the highly selective semihydrogenation of various alkynes at ambient temperature under additive-free conditions. The core-shell structure plays a crucial role in providing the excellent selectivity for alkenes through the selective dissociation of H2 in a heterolytic manner by maximizing interfacial sites between the core-Au and the shell-CeO2.
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Takato
authors.initials: T
authors.lastname: Mitsudome
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Yamamoto
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Zen
authors.initials: Z
authors.lastname: Maeno
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Tomoo
authors.initials: T
authors.lastname: Mizugaki
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Jitsukawa
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science and ‡Research Center for Solar Energy Chemistry, Osaka University , 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Kiyotomi
authors.initials: K
authors.lastname: Kaneda