Preparation of Pt deposited nanotubular TiO2 as cathodes for enhanced photoelectrochemical hydrogen production using seawater electrolytes |
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| Authors: | Wonsik Nam Seichang Oh Hyunku Joo Jaekyung Yoon |
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| Affiliation: | aKorea Institute of Energy Research, New and Renewable Energy Research Division, Hydrogen Energy Research Center, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea;bKorea University of Technology and Education, Department of Applied Chemical Engineering, 1800 Chungjeollo, Byeongcheon-myun, Chungnam 330-708, Republic of Korea;cYonsei University, Department of Chemical and Biomolecular Engineering, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea |
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| Abstract: | The purpose of this study was to develop effective cathodes to increase the production of hydrogen and use the seawater, an abundant resource in the earth as the electrolyte in photoelectrochemical systems. In order to fabricate the Pt/TiO2 cathodes, various contents of the Pt precursor (0–0.4 wt%) deposited by the electrodeposition method were used. On the basis of the hydrogen evolution rate, 0.2 wt% Pt/TiO2 was observed to exhibit the best performance among the various Pt/TiO2 cathodes with the natural seawater and two concentrated seawater electrolytes obtained from single (nanofiltration) and combined membrane (nanofiltration and reverse osmosis) processes.The surface characterizations exhibited that crystal structures and morphological properties of Pt and TiO2 found the results of XRD pattern and SEM/TEM images, respectively. |
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| Keywords: | Hydrogen Pt/TiO2 cathode Seawater electrolytes Nanofiltration Reverse osmosis Photoelectrochemical (PEC) |
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