Selective Photocatalytic Benzene Oxidation Using Iron-Carbon Nitride Fragments Functionalized with Cyamelurate-Like Groups

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Oliveira, Wanessa L. ; da Silva, Marcos A. R. ; Diab, Gabriel Ali Atta ; G Filho, Jose Balena ; Pastana, Vitor G. S. ; Silva, Luana L. B. ; de Oliveira, Eduarda Ferreira ; Batista, Walker Vinicius Ferreira do Carmo ; da Cruz, Tais dos Santos ; Mastelaro, Valmor Roberto ; Pires, Manoel Jose Mendes ; Teixeira, Ivo Freitas ; de Mesquita, Joao P.

• Tipo de documento: Artigo Científico
• Fonte: CHEMPHOTOCHEM; v. N/A, p. 12-pg., 2024-11-20.

Resumo

Carbon nitrides have emerged as promising supports for catalytically active metals in various chemical reactions. Among these, the selective oxidation of benzene to phenol stands out as particularly challenging within the chemical industry due to its traditionally low yields and complex reaction pathways. In our current investigation, we have focused on the synthesis of ionic carbon nitride fragments via a straightforward alkaline hydrolysis method. These fragments demonstrate a remarkable ability to stabilize iron cations within the carbon nitride structure (Frag-Fe), resulting in a highly efficient photocatalyst for benzene oxidation. Employing hydrogen peroxide as the oxidant in a single-step reaction, we achieved an impressive 47 % yield of phenol using Frag-Fe at 12 hours, with negligible production of CO2 as a byproduct. This compelling outcome underscores the effectiveness of our alkaline synthesis approach in generating carbon nitride-based photocatalysts with exceptional activity for C-H oxidation reactions. Our findings not only contribute to the advancement of carbon nitride-based catalysis, but also hold significant promise for the development of more sustainable and efficient chemical processes in the future. (AU)

• Processo FAPESP: 21/14006-7 - Síntese controlada de single-atoms em PHI/PTI e suas aplicações em energia
• Beneficiário: Gabriel Ali Atta Diab
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 21/12394-0 - Métodos sintéticos sustentáveis empregando catálise, solventes verdes, reagentes seguros e materiais de partida renováveis
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• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 20/14741-6 - Nitretos de carbono grafítico como plataformas para single-atom fotocatálise: usando princípios de design para melhores desempenhos
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• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 21/13271-9 - Single-atoms coordenados em nitretos de carbono grafítico para conversão fotocatalítica de metano
• Beneficiário: Marcos Augusto Ribeiro da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado