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

• Type: Article in International Scientific Journal
• Date: 2019

Authors

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

Journal

Title: Catalysis Today

Vol. 328

Pages: 293-299

ISSN: 0920-5861

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 18 Citations

Associated Projects

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

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7