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Visible light induced decomposition of organic compounds on WO3 loaded PtPb co-catalysts
Affiliation:1. Department of Material and Life Chemistry, Kanagawa University, 3-27-1, Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan;2. Department of Metallurgy and Ceramic Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan;3. PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;4. CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440020, India;5. National Institute for Materials Science (NIMS), Sengen 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;1. The Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;2. Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
Abstract:Tungsten oxide (WO3)-supported ordered intermetallic PtPb nanoparticles (PtPb NPs/WO3) were prepared through a co-reduction of Pt and Pb precursors with sodium borohydride in anhydrous methanol containing WO3. The PtPb NPs/WO3 were characterized based on the crystal structure obtained through powder X-ray diffraction (pXRD) as well as X-ray photoemission spectroscopy (XPS) and transmission electron microscopy (TEM). The formation of an ordered PtPb intermetallic phase on the WO3 surface was confirmed. The PtPb NPs/WO3 were more efficient when decomposing acetic acid (AcOH) and acetaldehyde (AcH) with visible light irradiation compared to the same process over WO3 loaded with Pt nanoparticles (Pt NPs/WO3).
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