Photocatalytic generation of hydrogen coupled with in-situ hydrogen storage |
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| Affiliation: | 1. School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;2. MERLin, School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia;1. Saint-Petersburg State University, Department of Physics, Saint-Petersburg, 198504, Russia;2. Institute of Applied Math Research of Karelian Research Centre of RAS, Petrozavodsk State University, 11 Pushkinskaya St., Petrozavodsk, 185910, Russia;1. Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634004, Russia;2. Innovation Iceland Center, Árleynir 2–8, 112 Reykjavík, Iceland;3. Atomic Energy Authority, Nuclear Research Centre, Egypt;1. Centre for Clean Energy and Nano Convergence, Hindustan Institute of Technology and Science, Chennai, India;2. Department of Civil Engineering Hindustan Institute of Technology and Science, Chennai, India;1. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China;2. College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China;1. Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China;2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;3. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China;4. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;5. Department of Laboratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang 110034, China |
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| Abstract: | To date, hydrogen generation and storage are two separated processes. We report on a new concept where photocatalytically generated hydrogen is simultaneously stored in-situ within the material photo-generating hydrogen. To this aim, we successfully synthesised a “forest” of vertically aligned TiO2 nanotubes decorated with Pd nanoparticles acting as the hydrogen store. Upon illumination of TiO2, hydrogen was effectively generated and full storage of hydrogen within the Pd nanostructures was achieved within 100 min. This result demonstrates new avenues on the possibility of designing hybrid nanostructures for the effective use of hydrogen as an energy vector. |
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| Keywords: | Photocatalysis Hydrogen storage Palladium |
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