Visible light photodegradation of phenol on MWNT-TiO2 composite catalysts prepared by a modified sol-gel method

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Wang, WD (Autor) Outra; Serp, P (Autor) Outra; Kalck, P (Autor) Outra; Faria, JL (Autor) FEUP

Revista

Título: Journal of Molecular Catalysis A: Chemical

Vol. 235

Páginas: 194-199

ISSN: 1381-1169

Editora: Elsevier B.V.

Indexação

ISI Web of Knowledge - 401 Citações

Scopus - 461 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-000-2N1

DOI: 10.1016/j.molcata.2005.02.027

Abstract (EN): Multi-walled carbon nanotubes (MWNT) and TiO2 composite catalysts were prepared by a modified sol-gel method. The nanoscaled composite materials were extensively characterized by TG, N-2 adsorption-desorption isotherm, XRD, SEM, EDX, TEM and UV-vis spectra. The photocatalytic degradation of phenol was performed under visible light irradiation on these catalysts, An optimum of synergetic effect on photocatalytic activity was observed for a weight ratio MWNT/TiO2 equal to 20% with an increase in the first-order rate constant by a factor of 4.1. The synergetic effect, induced by a strong interphase interaction between MWNT and TiO2, was discussed in terms of different roles played by MWNT in the composite catalysts.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6