Room‐Temperature and Aqueous‐Phase Synthesis of Plasmonic Molybdenum Oxide Nanoparticles for Visible‐Light‐Enhanced Hydrogen Generation |
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| Authors: | Dr. Jiayuan Shi Dr. Yasutaka Kuwahara Dr. Meicheng Wen Dr. Miriam Navlani‐García Dr. Kohsuke Mori Prof. Taicheng An Prof. Hiromi Yamashita |
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| Affiliation: | 1. Graduate School of Engineering, Osaka University, Osaka, Japan;2. 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, China;3. Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Kyoto, Japan;4. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, China |
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| Abstract: | A straightforward aqueous synthesis of MoO3?x nanoparticles at room temperature was developed by using (NH4)6Mo7O24?4 H2O 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 MoVI/MoV 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. |
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| Keywords: | green chemistry molybdenum oxide nanoparticles photochemistry surface plasmon resonance |
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