4.6 Article

Preparation of Pt deposited nanotubular TiO2 as cathodes for enhanced photoelectrochemical hydrogen production using seawater electrolytes

Journal

JOURNAL OF SOLID STATE CHEMISTRY
Volume 184, Issue 11, Pages 2920-2924

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2011.08.041

Keywords

Hydrogen; Pt/TiO2 cathode; Seawater electrolytes; Nanofiltration; Reverse osmosis; Photoelectrochemical (PEC)

Funding

  1. Ministry of Knowledge Economy, Republic of Korea [20093020040020]
  2. Korea Evaluation Institute of Industrial Technology (KEIT) [20093020040020] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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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. (C) 2011 Elsevier Inc. All rights reserved.

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