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| Pàgina inicial > Articles > Articles publicats > Oxophilic Sn to Promote Glucose Oxidation to Formic Acid in Ni Nanoparticles |
| Data: | 2025 |
| Resum: | The electrochemical glucose oxidation reaction (GOR) presents an opportunity to produce hydrogen and high-value chemical products. Herein, we investigate the effect of Sn in Ni nanoparticles for the GOR to formic acid (FA). Electrochemical results show that the maximum activity is related to the amount of Ni, as Ni sites are responsible for catalyzing the GOR via the NiOOH/Ni(OH) pair. However, the GOR kinetics increases with the amount of Sn, associated with an enhancement of the OH supply to the catalyst surface for Ni(OH) reoxidation to NiOOH. NiSn nanoparticles supported on carbon nanotubes (NiSn/CNT) exhibit excellent current densities and direct GOR via C-C cleavage mechanism, obtaining FA with a Faradaic efficiency (FE) of 93 % at 1. 45 V vs. reversible hydrogen electrode. GOR selectivity is further studied by varying the applied potential, glucose concentration, reaction time, and temperature. FE toward FA production decreases due to formic overoxidation to carbonates at low glucose concentrations and high applied potentials, while acetic and lactic acids are obtained with high selectivity at high glucose concentrations and 55 °C. Density functional theory calculations show that the SnO facilitates the adsorption of glucose on the surface of Ni and promotes the formation of the catalytic active Ni species. |
| Ajuts: | Agencia Estatal de Investigación PID2022-136883OB-C22 Agencia Estatal de Investigación PID2020-116612RB-C32 Agencia Estatal de Investigación PID2022-138491OB-C33 Generalitat de Catalunya 2021/SGR-01581 Generalitat de Catalunya 2021/SGR-00457 Agencia Estatal de Investigación PID2021-124572OB-C31 Generalitat de Catalunya 2021/SGR-01061 Agencia Estatal de Investigación PRTR-C17.I1 Agencia Estatal de Investigación PID2020-116093RB-C43 Agencia Estatal de Investigación CEX2021-001214-S |
| Nota: | Altres ajuts: Grant IU16-014206 (METCAM-FIB) ; CERCA Programme/Generalitat de Catalunya |
| Drets: | 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. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió sotmesa a revisió |
| Publicat a: | ChemSusChem, Vol. 18, Num. 4 (February 2025) , art. e202401256, ISSN 1864-564X |
Preprint 26 p, 2.0 MB |