Kinetics of hydrogen evolution reaction from aqueous HClO<sub>4</sub> solutions on some codeposited from a binary noble metal surfaces over Pt-substrates by cyclic voltammetry
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View Archive Info| Field | Value | |
| Title |
Kinetics of hydrogen evolution reaction from aqueous HClO<sub>4</sub> solutions on some codeposited from a binary noble metal surfaces over Pt-substrates by cyclic voltammetry
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| Creator |
Ray, Subrata K
Dutta, Jayati Kundu, Kiron K |
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| Description |
704-708
Relative electrocatalytic activities of some codepo-sited bina noble metal surfaces over Pt-substrates [(Pt)M<sub>1</sub>-M<sub>2</sub>] with different compositions of M<sub>1</sub> = Pt and M<sub>2</sub> = Pd, Ir and Au and M<sub>1</sub> = Pd and M<sub>2</sub> = Pd, Ir and Au have b n studied for hydrogen evolution reaction (HER) from aqueous HC1O<sub>4</sub> solutions by determining the rate constant <em>k</em><sub>s</sub> of the reaction by cyclic voltammetry. The <em>k</em><sub>s</sub> values have been determined by Shain and Nicholson's formulations from the observed quasi-reversible cyclic voltammograms (CVG's) obtained at different scan rates ranging from 0.002 to 0.3 V s<sup>-1</sup> the potential range 0 to - 1.0 V. The observed <em>k</em><sub>s</sub>-M<sub>2</sub> composition profiles of [(Pt)M<sub>1</sub>-M<sub>2</sub>] surfaces in both the cases with M<sub>1 </sub> = Pt or Pd are found to pass through a minimum presumably because of the enhanced overage of the surfaces by nascent hydrogen, <em>ɵ</em><sub>H</sub>, and the consequent decrease of the fraction of free surface, which seemingly dictates the rate of HER in the present cases. |
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| Date |
2018-03-20T10:53:08Z
2018-03-20T10:53:08Z 1993-08 |
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| Type |
Article
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/43946 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJC-A Vol.32A(08) [August 1993]
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