Hydrogen evolution reaction on copper: Promoting water dissociation by tuning the surface oxophilicity
| Autor: | Dusan Strmcnik, Pietro P. Lopes, Nenad M. Markovic, Pedro Farinazzo Bergamo Dias Martins, Edson A. Ticianelli, Vojislav R. Stamenkovic |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Chemistry
Activated complex chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Polycrystalline copper Copper Dissociation (chemistry) 0104 chemical sciences Catalysis lcsh:Chemistry lcsh:Industrial electrochemistry lcsh:QD1-999 Electrochemistry Oxophilicity Hydrogen evolution Surface oxidation 0210 nano-technology lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 100, Iss, Pp 30-33 (2019) |
| ISSN: | 1388-2481 |
| Popis: | In order to probe the hydroxyl (OHad) adsorption energy as one of the possible descriptors for hydrogen evolution reaction (HER) in alkaline media, we performed studies on polycrystalline copper (Cu(Poly)), a well-known poor catalyst for HER. By employing three different preparation methods for Cu(Poly), we were able to establish links between surface oxidation extent, oxophilicity, hydrophilicity and their catalytic activity for the HER. Ultimately, we propose that the formation of Cu(I)-OHad‐‐‐OH2 activated complex is essential for lowering the energy barrier for water dissociation, which leads to higher activity for the HER in alkaline media. Keywords: Hydrogen evolution reaction, Electrocatalysis, Surface science, Copper, Structure-function relationships |
| Databáze: | OpenAIRE |
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