Selective Production of Benzaldehyde Using Metal-Free Reduced Graphene Oxide/Carbon Nitride Hybrid Photocatalysts

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

Maria J. Lima (Autor) Outra; Luisa M. Pastrana‐Martínez (Autor) Outra; Sampaio, M.J. (Autor) FEUP; Goran Dra¸ić (Autor) Outra; Adrián M. T. Silva (Autor) FEUP; Joaquim Luís Faria (Autor) FEUP; Cláudia G. Silva (Autor) FEUP

Revista

Título: ChemistrySelect

Vol. 3

Páginas: 8070-8081

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 1 Citação

ISI Web of Science

Scopus - 5 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

FOS: Ciências da engenharia e tecnologias > Engenharia química

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-E5V

DOI: 10.1002/slct.201800962

Abstract (EN): Benzyl alcohol was selectively oxidized to benzaldehyde in aqueous solution, at ambient conditions of temperature and pressure, by using a photocatalytic approach, with two types of irradiation sources, namely monochromatic UV-A light (392 nm) and visible light (400-700 nm). Conversion after 4 h of reaction was more efficient under UV than under visible, with selectivity in excess of 80% for both irradiating sources. Composites of graphitic carbon nitride (g-C3N4) containing small amounts of reduced graphene oxide (rGO) (up to 1 wt.%) were used as photocatalysts. The presence of rGO was confirmed by spectroscopic and microscopic analyses. Results show that small amounts of rGO phase can considerably enhance the photocatalytic activity of g-C3N4 based catalysts, the best load being 0.10 wt.%. This improvement is attributed to the critical modification of morphological and electronic properties provided by the presence of rGO.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12