Studies of the process of catalytic hydrogen evolution on the epoxy-resin-impregnated graphite-based mercury film electrode |
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| Affiliation: | 1. Department of Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, 602105, India;2. Department of Physics, SSM Institute of Engineering and Technology, Dindigul, 624002, India;3. Department of Physics, Auxillium College (Autonomous), Vellore, 632006, India;4. Department of Physics, National Institute of Technology Karnataka, Surathkal, 575025, India;5. Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia;6. Department of Chemistry, National Institute of Technology Karnataka, Surathkal, 575025, India;7. Department of Physics, Karpagam Academy of Higher Education, Coimbatore, 641021, India;8. Department of Advanced Components and Materials Engineering, Sunchon National University, 255, Jungang-ro, Suncheon-si, Jellanamdo, 57922, Republic of Korea;1. College of Materials and Chemical Engineering, Heilongjiang Institute of Technology, Harbin, 150050, China;2. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China |
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| Abstract: | The phenomenon of catalytic hydrogen evolution in the presence of platinum salts on the epoxy-resin-impregnated graphite-based mercury film electrode was studied. Two measurements were performed: (i) the deposition of catalyst on the IGE surface from HCl solution containing H2PtCl6 and HgCl2; (ii) the voltammetric curve of a solution of HCL + KCl was recorded. The effect of some parameters on the catalytic hydrogen evolution peak potential was studied. The investigations performed have shown that the four following parameters have a decisive effect on the form of the CHE curve: (1) Hg2+ concentration in the deposition step; (2) deposition potential value; (3) deposition time; (4) Pt(IV) concentration during the deposition step. It was established that, with increasing amount of Pt deposited on the IGE, a considerable shift of the CHE peak potential towards positive values occurred. A linear potential dependence of the CHE peak on log cPt was obtained when the Pt(IV) concentration was changed from 4×10−9M to 2×10−6M. That dependence can be employed well for analytical purposes. |
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