Bringing Earth-Abundant Plasmonic Catalysis to Light: Gram-Scale Mechanochemical Synthesis and Tuning of Activity by Dual Excitation of Antenna and Reactor Sites

Autor(es)

Quiroz, Jhon ^[1] ; de Oliveira, Paulo F. M. ^{[2, 3]} ; Shetty, Shwetha ^[1] ; Oropeza, Freddy E. ^[4] ; de la Pena O'Shea, Victor A. ^[4] ; Rodrigues, V, Lucas C. ; Rodrigues, Maria P. de S. ^[5] ; Torresi, Roberto Manuel ^[5] ; Emmerling, Franziska ^[3] ; Camargo, Pedro H. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Helsinki, Dept Chem, Helsinki 00560 - Finland

^[2] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05508000 Sao Paulo - Brazil

^[3] BAM Fed Inst Mat Res & Testing, D-12489 Berlin - Germany

^[4] IMDEA Energy Inst, Photoactivated Proc Unit, Madrid 28935 - Spain

^[5] Rodrigues, Lucas C., V, Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACS SUSTAINABLE CHEMISTRY & ENGINEERING; v. 9, n. 29, p. 9750-9760, JUL 26 2021.
• Citações Web of Science: 0

Resumo

The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles (NPs) in the visible and near-infrared ranges is currently at the forefront of improving photocatalytic performances via plasmonic photocatalysis. One bottleneck of this field is that the NPs that often display the best optical properties in the visible and near-infrared ranges are based on expensive noble metals such as silver (Ag) and gold (Au). While earth-abundant plasmonic materials have been proposed together with catalytic metals in antenna-reactor systems, their performances remain limited by their optical properties. Importantly, the synthesis of plasmonic photocatalysts remains challenging in terms of scalability while often requiring several steps, high temperatures, and special conditions. Herein, we address these challenges by developing a one-pot, gram-scale, room-temperature synthesis of earth-abundant plasmonic photocatalysts while improving their activities beyond what has been dictated by the LSPR excitation of the plasmonic component. We describe the mechanochemical synthesis of earth-abundant plasmonic photocatalysts by using MoO3 (antenna) and Au (reactor) NPs as a proof-of-concept example and demonstrate that the dual plasmonic excitation of antenna and reactor sites enables the tuning of plasmonic photocatalytic performances toward the reductive coupling of nitrobenzene to azobenzene as a model reaction. In addition to providing a pathway to the facile and gramscale synthesis of plasmonic photocatalysts, the results reported herein may open pathways to improved activities in plasmonic catalysis. (AU)

• Processo FAPESP: 17/15456-0 - Mecanoquímica de sólidos como rota verde para síntese de materiais avançados
• Beneficiário: Paulo Filho Marques de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/26308-7 - Otimização das propriedades físico-químicas de materiais nano-estruturados e suas aplicações em reconhecimento molecular, catálise e conversão/armazenamento de energia
• Beneficiário: Roberto Manuel Torresi
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/01619-0 - Elucidação dos mecanismos de formação de nanopartículas de metais nobres em condições de moagem mecânica no estado sólido utilizando técnicas in situ
• Beneficiário: Paulo Filho Marques de Oliveira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado