CuO@NiO core-shell nanoparticles decorated anatase TiO2 nanospheres for enhanced photocatalytic hydrogen production |
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| Affiliation: | 1. Functional Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, Tamil Nadu, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India;3. Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa 516 005, India;1. Department of Chemistry, Dayalbagh Educational Institute, Dayalbagh, Agra, 282 005, India;2. Department of Physics & Computer Science, Dayalbagh Educational Institute, Dayalbagh, Agra, 282 005, India;3. Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India;1. Department of Physics, DAV University, Sarmastpur, Jalandhar, Punjab 144001, India;2. Centre of Advanced Study in Physics, Department of Physics, Punjab University, Chandigarh 160 014, India;1. School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, PR China;2. Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, People''s Republic of China;1. National Synchrotron Radiation Research Center, 101 Hsin-Ann Rd., Hsinchu 30076, Taiwan;2. Department of Materials Science and Engineering, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu 30010, Taiwan;3. Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu 30010, Taiwan;4. Division of Chemistry, Department of Sciences and Humanities, Vignan’s Foundation for Science, Technology and Research, Vadlamudi 522 213, Guntur, Andhra Pradesh, India;5. Center for Emergent Functional Matter Science, National Chiao Tung University, 1001 Ta-Hsueh Rd., Hsinchu 30010, Taiwan |
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| Abstract: | Core-shell structured co-catalyst has been created much attention in photocatalytic hydrogen production due to their efficient electron-hole pair separation, suppression of surface back reaction and long term stability. Here, we report the preparation of CuO@NiO hierarchical nanostructures as a co-catalyst deposited on TiO2 nanospheres for enhanced photocatalytic hydrogen generation. The formation of ultrathin NiO shell over the CuO core was confirmed by TEM analysis. Fabricated core-shell nanostructured CuO@NiO over TiO2 nanospheres was studied for hydrogen evolution under the direct solar light and it showed a high rate of H2 production of 26.1 mmol. h?1. g?1cat. It was scrutinized that the rate of hydrogen production was improved with shell thickness and co-catalyst loading. Systematic investigation on CuO@NiO co-catalyst loading, pH of the medium and glycerol concentration for augmented H2 production. The recorded rate of hydrogen production is almost six folds greater than that of pristine TiO2. In the view of largescale synthesis for alternative energy storage applications, the composited photocatalyst was made of by simple mixing method, which could be scaled up without any loss in photocatalytic activity. Further, the stability test of photocatalyst for continuous use found that 82% of initial photocatalytic activity is retained even after three days. |
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| Keywords: | Hydrogen production CuO@NiO Co-catalyst Core-shell structure Solar light Photocatalysis |
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