title: Green, Multi-Gram One-Step Synthesis of Core-Shell Nanocomposites in Water and Their Catalytic Application to Chemoselective Hydrogenations.
abstract: We devise a new and green route for the multi-gram synthesis of core-shell nanoparticles (NPs) in one step under organic-free and pH-neutral conditions. Simply mixing core and shell metal precursors in the presence of solid metal oxides in water allowed for the facile fabrication of small CeO2-covered Au and Ag nanoparticles dispersed on metal oxides in one step. The CeO2-covered Au nanoparticles acted as a highly efficient and reusable catalyst for a series of chemoselective hydrogenations, while retaining C=C bonds in diverse substrates. Consequently, higher environmental compatibility and more efficient energy savings were achieved across the entire process, including catalyst preparation, reaction, separation, and reuse.
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
authors.forename: Teppei
authors.initials: T
authors.lastname: Urayama
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
authors.forename: Takato
authors.initials: T
authors.lastname: Mitsudome
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
authors.forename: Zen
authors.initials: Z
authors.lastname: Maeno
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
authors.forename: Tomoo
authors.initials: T
authors.lastname: Mizugaki
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
authors.forename: Koichiro
authors.initials: K
authors.lastname: Jitsukawa
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.|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
keywords: core-shell nanomaterials; gold; heterogeneous catalysis; hydrogenation; silver