Solar light photocatalytic hydrogen production from water over Pt and Au/TiO2(anatase/rutile) photocatalysts: Influence of noble metal and porogen promotion |
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| Authors: | Olivier Rosseler Muthukonda V Shankar Maithaa Karkmaz-Le Du Loïc Schmidlin Nicolas Keller Valérie Keller |
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| Affiliation: | 1. College of Science and Technology, Agricultural University of Hebei, Huanghua 061100, Hebei, China;2. Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, Hunan, China;3. Hebei Agricultural Products Processing Engineering Technology Research Center, Baoding 071001, Hebei, China;1. Solar Fuels Laboratory, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;2. Division of Molecular Biosciences, Imperial College London, South Kensington Campus, London SW7 2AZ, UK;1. Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan;2. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan;1. School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand;2. The MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand;3. SABIC, Corporate Research Institute (CRI), KAUST, Saudi Arabia;1. School of Chemical Engineering, Northwest University, No. 229 Taibai North Road, Xi’an, Shaanxi 710069, China;2. Department of Physics, Northwest University, No. 229 Taibai North Road, Xi’an, Shaanxi 710069, China;1. Centro Instrumental Físicoquímico para el desarrollo de Investigación Aplicada (CIDIA-FEAM), Departamento de Química, Universidad de Las Palmas de Gran Canaria, Edificio Polivalente I del Parque Científico Tecnológico, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Spain;2. Instituto de Ciencia de Materiales de Sevilla, Centro Mixto CSIC-Universidad de Sevilla, Américo Vespucio s/n, 41092 Sevilla, Spain;3. INAEL Electrical Systems, C/Jarama 5, 45007 Toledo, Spain |
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| Abstract: | Hydrogen production from water under artificial solar light irradiation was performed over a series of Pt and Au/TiO2(anatase/rutile) photocatalysts. Different TiO2 supports with varying anatase/rutile contents were compared, based on either sol–gel synthesis or commercial TiO2. The influence of template promotion on sol–gel TiO2 synthesis has been studied using different porogens or templates. Among various factors influencing the hydrogen evolution efficiency, it was pointed out that the following parameters were crucial to enhance H2 evolution: (i) the nature and content of the metallic co-catalyst, (ii) the surface, crystallographic, and porosity properties of the TiO2 anatase/rutile support, (iii) the anatase/rutile ratio, (iv) the metal–support interactions, and (v) the relative amount of methanol added as a sacrificial reagent. The influence of these different factors was studied in detail. In optimized conditions, important H2 production efficiency (120 μmol/min) was obtained over days without deactivation and with very low amounts of methanol. |
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