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Pulsed‐Laser‐Driven CO 2 Reduction Reaction for the Control of the Photoluminescence Quantum Yield of Organometallic Gold Nanocomposites

2024; Wiley; Volume: 4; Issue: 7 Linguagem: Inglês

10.1002/smsc.202300328

2688-4046

 Tahir, Guilherme C. Concas, Mariana Gisbert, M. Cremona, Fernando Lazaro, M.E.H. Maia da Costa, Suellen D. T. De Barros, Ricardo Q. Aucélio, Tatiana Dillenburg Saint’Pierre, José Marcus Godoy, Diogo Mendes, G. Mariotto, N. Daldosso, Francesco Enrichi, Alexandre Cuin, Aldebarã Fausto Ferreira, W.M. de Azevêdo, Gerónimo Pérez, Celso Sant’Anna, Bráulio S. Archanjo, Yordy E. Licea, André L. Rossi, Francis Leonard Deepak, Rajwali Khan, Quaid Zaman, Sven Reichenberger, Theo Fromme, Giancarlo Margheri, J.R. Sabino, Gabriella Fibbi, Mario Del Rosso, Anastasia Chillà, Francesca Margheri, Anna Laurenzana, Tommaso Del Rosso,

Catalytic Processes in Materials Science

Over the last decade, the CO 2 reduction reaction (CO 2 RR) has been increasingly exploited for the synthesis of high‐value raw materials in gaseous or liquid form, although no examples of CO 2 fixation in nanoparticle systems have been demonstrated. Herein, CO 2 fixation into solid nanomaterials by laser synthesis and processing of gold colloids in water, traditionally considered a green approach leading to ligand‐free nanoparticles without the formation of by‐products, is reported. If carbon monoxide‐rich gold nanoparticles are observable even after synthesis in deionized water, the presence of CO 2 derivatives in alkaline water environment leads to C 2 and C 3 coupling with the production of carboxylic acids as a typical CO 2 RR fingerprint. While laser processing of preformed gold colloids is selective for C 2 coupling, both C 2 and C 3 coupling to lactic acid are observed during pulsed laser ablation of a gold target. In the latter case, it is demonstrated that it is possible to synthesize photoluminescent organometallic nanocomposites in the blue spectral region with a quantum yield of about 20% under adequate experimental conditions. In this research, new pathways are offered to be explored in energetics, photonics, catalysis, and synthesis at the nanoscale.