title: Room-Temperature and Aqueous-Phase Synthesis of Plasmonic Molybdenum Oxide Nanoparticles for Visible-Light-Enhanced Hydrogen Generation.
abstract: A straightforward aqueous synthesis of MoO3-x nanoparticles at room temperature was developed by using (NH4 )6 Mo7 O24 ⋅4 H2 O and MoCl5 as precursors in the absence of reductants, inert gas, and organic solvents. SEM and TEM images indicate the as-prepared products are nanoparticles with diameters of 90-180 nm. The diffuse reflectance UV-visible-near-IR spectra of the samples indicate localized surface plasmon resonance (LSPR) properties generated by the introduction of oxygen vacancies. Owing to its strong plasmonic absorption in the visible-light and near-infrared region, such nanostructures exhibit an enhancement of activity toward visible-light catalytic hydrogen generation. MoO3-x nanoparticles synthesized with a molar ratio of Mo(VI) /Mo(V) 1:1 show the highest yield of H2 evolution. The cycling catalytic performance has been investigated to indicate the structural and chemical stability of the as-prepared plasmonic MoO3-x nanoparticles, which reveals its potential application in visible-light catalytic hydrogen production.
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.|State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.
authors.forename: Jiayuan
authors.initials: J
authors.lastname: Shi
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.|Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan.
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Kuwahara
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.
authors.forename: Meicheng
authors.initials: M
authors.lastname: Wen
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.
authors.forename: Miriam
authors.initials: M
authors.lastname: Navlani-García
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.|Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan.
authors.forename: Kohsuke
authors.initials: K
authors.lastname: Mori
authors.affiliation: State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.|School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Taicheng
authors.initials: T
authors.lastname: An
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan. yamashita@mat.eng.osaka-u.ac.jp.|Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto, 615-8520, Japan. yamashita@mat.eng.osaka-u.ac.jp.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Yamashita
keywords: green chemistry; molybdenum oxide; nanoparticles; photochemistry; surface plasmon resonance