Magnetically recoverable Fe3O4/g-C3N4 composite for photocatalytic production of benzaldehyde under UV-LED radiation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Maria J. Lima (Autor) Outra; Sampaio, M.J. (Autor) FEUP; Cláudia G. Silva (Autor) FEUP; Adrián M. T. Silva (Autor) FEUP; Joaquim L. Faria (Autor) FEUP

Revista

Título: Catalysis Today

Vol. 328

Páginas: 293-299

ISSN: 0920-5861

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 18 Citações

Projetos Associados

IF/00514/2014/CP1249/CT0004 - Desafiando a síntese em química fina: uma nova abordagem utilizando fotocatalisadores isentos de metais

AIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable North Region of Portugal2020

Outras Informações

ID Authenticus: P-00P-WJE

DOI: 10.1016/j.cattod.2018.11.018

Abstract (EN): Selective production of aromatic aldehydes is an important challenge in the synthesis of fine chemicals. This study presents a viable strategy for the production of benzaldehyde using a magnetic recoverable photocatalyst. Graphitic carbon nitride was submitted to a thermal post-treatment, for partial exfoliation (g-CN-T) and combined with magnetic nanoparticles of Fe3O4. The composite containing 18 wt.% of Fe3O4 shows a remarkable magnetic response. The efficiency of this composite was evaluated in the selective photocatalytic conversion of benzyl alcohol into benzaldehyde. A good compromise was observed in terms of selectivity for benzaldehyde formation and ability of recovery at the end of the photocatalytic reaction by the application of a magnetic field. Reutilization experiments using this hybrid material revealed a slight decrease of efficiency after the first run only. Moreover, hydrogen was generated during the photocatalytic production of benzaldehyde. Thus, the combination of gCN-T and magnetic nanoparticles provided an impetus to design a photocatalyst with easy and inexpensive features for selective synthesis of organic compounds.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7