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| Página principal > Artículos > Artículos publicados > Semiconductor nanosheets for electrocatalytic self-coupling of benzaldehyde to hydrobenzoin |
| Fecha: | 2024 |
| Resumen: | The electrochemical reduction of biomass-derived feedstocks provides a sustainable platform for the synthesis of a wide range of chemical commodities and biofuels. Despite their interest, the optimization of reaction conditions, the screening of electrode materials, and the mechanistic understanding of these processes lag well behind other chemical routes. Here, we focus on the electrochemical self-coupling of benzaldehyde (BZH) to hydrobenzoin (HDB) using semiconductor electrocatalysts with nanosheet morphologies. By testing several semiconductor materials, a correlation is observed between their band gap and the electrochemical potential necessary to maximize selectivity towards HDB in alkaline medium, which we associate with the charge accumulation at the semiconductor surface. N-type CuInS provides the highest conversion rate at 0. 3 mmol cmh with a selectivity of 98. 5 % at -1. 3 V vs. Hg/HgO. Additional density functional theory calculations demonstrate a lower kinetic energy barrier at the CuInS surface compared with graphitic carbon, proving its catalytic role in the self-coupling reaction of BZH. |
| Ayudas: | European Commission 801342 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agencia Estatal de Investigación PID2020-116093RB-C43 Ministerio de Ciencia e Innovación CEX2021-001214-S |
| Derechos: | Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. |
| Lengua: | Anglès |
| Documento: | Article ; recerca ; Versió sotmesa a revisió |
| Materia: | Electrochemical reduction ; Self-coupling ; Semiconductor materials ; Benzaldehyde ; Hydrobenzoin |
| Publicado en: | Chemical engineering journal (1996), Vol. 479 (January 2024) , art. 147612, ISSN 1873-3212 |
Preprint 28 p, 1.5 MB |