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Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español | |||||||||
| Pàgina inicial > Articles > Articles publicats > Redox-Active Au Nanoparticles Self-Assembled at Liquid-Liquid Interface via C-Au Functionalization for Dye Degradation Electrocatalysis |
| Data: | 2024 |
| Resum: | This work presents the synthesis of poly(vinylpyrrolidone)-stabilized gold nanoparticles (Au NPs) and their subsequent functionalization with molecules bearing terminal alkynes. The ligand exchange occurs at the liquid-liquid interface (LLI), resulting in the formation of Au NPs stabilized through the covalent C-Au functionalization. Simultaneously, structured composite films are formed, driven by the self-assembly of the Au NPs supported by the polymer. A comparative analysis involving three distinct alkyne-terminated derivatives reveals that film formation is favored when the ligand includes an aromatic unit such as in a ferrocenyl-stilbene derivative. The LLI films can be easily transferred to solid a support for their characterization. Additionally, it is demonstrated that these films serve as a potential electrocatalytic platform. As a proof of concept, we demonstrate that the electrochemically active ferrocene-based Au NPs films can efficiently remove methylene blue via an electro-Fenton-like reaction, surpassing the efficiency of the non-redox phenylacetylene Au NP films. |
| Ajuts: | Agencia Estatal de Investigación PID2019-111682RB-I00 Agencia Estatal de Investigación PID2022-141393OB-I00 Agencia Estatal de Investigación CEX2019-000917-S Agencia Estatal de Investigación TED2021-132550B-C22 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00443 European Commission 754397 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Au nanoparticles ; Carbon-gold functionalization ; Liquid-liquid interface assembly ; Redox-activity ; Electrocatalysis |
| Publicat a: | ACS applied nano materials, Vol. 7, Issue 5 (March 2024) , p. 5242-5251, ISSN 2574-0970 |
10 p, 4.3 MB |