Solar hydrogen evolution over native visible-light-driven Sn3O4 |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-0811, Japan;2. Department of Material & Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama, Kanagawa, 221-8686, Japan;3. Synchrotron X-ray Station at Spring-8, National Institute for Materials Science (NIMS), 1-1-1 Kouto, Sayo, Hyogo, 679-5148, Japan;4. Research Center for Advanced Measurement and Characterization, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan;5. Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan;1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 PR China;2. Chemical synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, PR China;3. Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, PR China;1. Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, PR China;2. Université de Lyon, Ecole Centrale de Lyon, UMR CNRS 5270, Institut des Nanotechnologies de Lyon, UMR CNRS 5270, Ecully, 69130, France;3. State Key Laboratory of Crystal Material, Shandong University, Jinan, 250100, PR China;1. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, PR China;2. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China.;3. Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, PR China;1. School of Resources and Environment, University of Jinan, Jinan 250022, PR China;2. Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China;3. State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350016, PR China;1. College of Chemistry, Liaoning University, Shenyang, 110036, PR China;2. College of Environment, Liaoning University, Shenyang, 110036, PR China;3. Alashan League Quality Inspection Center of Agricultural and Livestock Products, Bayanhot, 750306, PR China;1. School of Chemical Engineering, Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, Guangdong University of Petrochemical Technology, Maoming 525000, China;2. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, China;3. School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei, China;4. Department of Chemistry, Changsha University of Science and Technology, Changsha 410114, Hunan, China |
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| Abstract: | Low-cost semiconductor photocatalysts that can efficiently harvest solar energy and generate H2 from water or alcohols will be critical to future hydrogen economies. Co-catalyst loading and/or doping of foreign element at host material have been crucial for semiconductor photocatalyst to produce significant H2 evolution, so far. We synthesized native-visible-light driven Sn3O4 photocatalyst, which significantly catalyzed hydrogen evolution from various alcohol solutions under irradiation of visible light (λ > 400 nm), without co-catalyst. The H2 production reaction proceeded through hydroxyalkyl radical reaction in the methanol solution. The apparent quantum yield was 0.4% for the Sn3O4 competitive to that of visible-light-sensitive co-catalyst loaded doped photocatalyst. The enhanced hydrogen evolution is attributed to the desirable band gap and band edge positions (CBM and VBM) of the Sn3O4 for H2 production in visible light, which would originate from atomically layered structure of Sn3O4. The Sn3O4 material is good promising photocatalyst for solar hydrogen production from alcohols. |
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| Keywords: | Tin oxide Mix valence oxide Photocatalyst Visible light Hydrogen production Alcohol |
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