Photochemically activated atomic ruthenium supported on boron-doped carbon as a robust electrocatalyst for hydrogen evolution
| العنوان: | Photochemically activated atomic ruthenium supported on boron-doped carbon as a robust electrocatalyst for hydrogen evolution |
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| المؤلفون: | Feng Wang, Shaoxuan Yang, Meiling Dou, Zhengping Zhang, Yihuan Yu |
| المصدر: | Journal of Materials Chemistry A. 8:16669-16675 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Renewable Energy, Sustainability and the Environment, chemistry.chemical_element, 02 engineering and technology, General Chemistry, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, Electrocatalyst, Photochemistry, 01 natural sciences, Electrochemical energy conversion, 0104 chemical sciences, Catalysis, Ruthenium, Metal, Adsorption, chemistry, visual_art, visual_art.visual_art_medium, engineering, General Materials Science, Noble metal, 0210 nano-technology |
| الوصف: | Tailored single-atom catalysts can trigger breakthroughs in the development of high-performance and low-cost energy conversion systems, especially in the case of supported noble metal electrocatalysts. However, the weak interactions between unsaturated metal atoms and supports can result in metal dissolution or aggregation in a harsh electrochemical environment. Here we report a facile yet effective method to stabilize atomic Ru–N sites on boron-doped carbon by mild photo-activation. Owing to the presence of adjacent B/N co-doped pairs, Ru atoms are firmly anchored on Ru–N–B–C centers leading to an enhanced metal–support interaction, with a Gibbs free energy close to zero for adsorption of H*. The resulting highly stabilized atomic Ru has excellent catalytic activity with efficient metal utilization towards the hydrogen evolution reaction in either alkaline or acidic electrolyte (with turnover frequencies of 2.82 and 1.02 H2 per s, respectively), along with good rate capability and anti-reverse-current ability in long-term operation. This work opens a new route to prepare highly robust single-atom catalysts, which have good prospects for practical application in high-performance and low-cost electrochemical energy conversion devices. |
| تدمد: | 2050-7496 2050-7488 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::dda1dffd4ce30cbbd1bb861b1d2e8f93 https://doi.org/10.1039/d0ta02107e |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........dda1dffd4ce30cbbd1bb861b1d2e8f93 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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