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    The photoelectrocatalytic activity, long term stability and corrosion performance of NiMo deposited titanium oxide nano-tubes for hydrogen production in alkaline medium

    Year: 2017

    Journal: Appl. Surf. Sci., Volume 423, NOV 30, page 704–715

    Authors: Mert, Mehmet Erman; Mert, Basak Dogru; Kardas, Gulfeza; Yazici, Birgul

    Organizations: Cukurova University Research Fund

    Keywords: Catalysis; Coating materials; Corrosion; Electrochemical impedance spectroscopy; Hydrogen production

    In this study, titanium oxide nano-tubes are doped with Ni and Mo particles with various chemical compositions, in order to put forth the efficiency of single and binary coatings on hydrogen evolution reaction (HER) in 1 M KOH. The characterization was achieved by cyclic voltammetry, scanning electron microscopy and energy dispersive X-ray analysis. The water wettability characteristics of electrode surfaces were investigated using contact angle. The long-term catalyst stability and corrosion performance were determined by current-potential curves and electrochemical impedance spectroscopy. Furthermore, photoelectrochemical behavior was determined via linear sweep voltammetry. Results showed that, nano-structured Ni and Mo deposited titanium oxide nano-tubes decrease the hydrogen over potential and increase HER efficiency, it is stable over 168 h electrolysis and it exhibits higher corrosion performance. (C) 2017 Elsevier B.V. All rights reserved.
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