Academic Journal
Enhanced pH-universal hydrogen evolution reactions on the Ru/a–Ni–MoO3 electrocatalysts
| العنوان: | Enhanced pH-universal hydrogen evolution reactions on the Ru/a–Ni–MoO3 electrocatalysts |
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| المؤلفون: | Peng, Lingyi, Zhang, Ding, Ma, Zhipeng, Chu, Dewei, Cazorla Silva, Claudio, Amal, Rose, Han, Zhaojun |
| المساهمون: | Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. CCQM - Condensed, Complex and Quantum Matter Group |
| بيانات النشر: | John Wiley & sons |
| سنة النشر: | 2023 |
| المجموعة: | Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
| مصطلحات موضوعية: | Àrees temàtiques de la UPC::Física, Electronic structure, Hydrogen-ion concentration, Ruthenium, Electron transfers, Electronic structures, Hydrogen evolution reaction, pH universal, Estructura electrònica, Concentració dels ions d'hidrogen, Ruteni |
| الوصف: | Green hydrogen production through the electrocatalytic hydrogen evolution reaction (HER) is a promising solution for transition from fossil fuels to renewable energy. To enable the use of a variety of electrolytes with different pH values, HER catalysts with pH universality are highly desirable but their performance remains mediocre. Herein, a pH-universal HER catalyst composed of ruthenium nanoparticles decorated on amorphous Ni-doped MoO3 (a–Ni–MoO3) nanowire support is reported, that is, Ru/a–Ni–MoO3, which achieves enhanced performance as compared to the commercial Ru/C catalyst. Electron transfer from Ru to a–Ni–MoO3 is identified by spectroscopic techniques, which results in a modified electronic structure of the Ru active sites with a reduced electron density of 4d states near the Fermi level. Density functional theory calculations further reveal that the modulated electronic structure weakens the interactions between the Ru active sites and the reaction intermediates, which facilitates the HER reaction steps including H intermediate desorption and water dissociation. Experimental and theoretical findings provide insight into enhancing pH-universal HER performance through modulation of electrocatalyst electronic structure. ; Postprint (published version) |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 9 p.; application/pdf |
| اللغة: | English |
| تدمد: | 2688-4062 |
| Relation: | Peng, L. [et al.]. Enhanced pH-universal hydrogen evolution reactions on the Ru/a–Ni–MoO3 electrocatalysts. "Small structures", 27 Juliol 2023, vol. 4, núm. 12, article 2300194.; http://hdl.handle.net/2117/403330 |
| DOI: | 10.1002/sstr.202300194 |
| الاتاحة: | http://hdl.handle.net/2117/403330 https://doi.org/10.1002/sstr.202300194 |
| Rights: | Attribution-NonCommercial-NoDerivatives 4.0 International ; http://creativecommons.org/licenses/by-nc-nd/4.0/ ; Open Access |
| رقم الانضمام: | edsbas.F20D8382 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 26884062 |
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| DOI: | 10.1002/sstr.202300194 |