Nickel centered metal-organic complex as an electro-catalyst for hydrogen evolution reaction at neutral and acidic conditions
| Autor: | N. Nagendra Gandhi, Madhumitha Rajakumar, Matheswaran Manickam, Karuppan Muthukumar |
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| Rok vydání: | 2020 |
| Předmět: |
Tafel equation
Renewable Energy Sustainability and the Environment Chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Carbon-13 NMR 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Dielectric spectroscopy Metal Nickel Fuel Technology visual_art visual_art.visual_art_medium 0210 nano-technology Polarization (electrochemistry) Spectroscopy Nuclear chemistry |
| Zdroj: | International Journal of Hydrogen Energy. 45:3905-3915 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2019.12.031 |
| Popis: | In this study, we report the development of dihydropyrimidines substituted nickel electro-catalyst at mild conditions for hydrogen evolution reaction. The Biginelli type reaction was carried out to produce 4-(4-chlorophenyl)-3,4,5,6-tetrahydrobenzo[h]quinazoline-2(1H)-thione moiety. This was added with NiCl2.6H2O to synthesize Ni-quinazoline-2(1H)-thione catalyst. The prepared catalyst was characterized using UV–Vis, FT-IR, Mass, 1H and 13C NMR and SEM-EDX spectroscopy. It showed an excellent hydrogen evolution reaction (HER) activity. LSV polarization showed a low Tafel slope (34 mV/dec) nearly close to Pt/C (28 mV/dec) in neutral medium whereas a Tafel slope of 100 mV/dec was observed with 0.5M H2SO4 while Pt/C showed 50 mV/dec. Electrochemical impedance spectroscopy measured by applying −1.18 V in neutral medium showed two depressed semicircles whereas with 0.5M H2SO4 and -1.45 V applied voltage single half was observed. |
| Databáze: | OpenAIRE |
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