Nanodiamond-TiO2 Composites for Heterogeneous Photocatalysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Luisa M Pastrana Martinez (Autor) Outra; Sergio Morales Torres (Autor) FEUP; Sonia A C Carabineiro (Autor) FEUP; Josephus G Buijnsters (Autor) Outra; Joaquim L Faria (Autor) FEUP; Jose L Figueiredo (Autor) FEUP; Adrian M T Silva (Autor) FEUP

Revista

Título: ChemPlusChem

Vol. 78

Páginas: 801-807

ISSN: 2192-6506

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 25 Citações

ISI Web of Science

Scopus - 31 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-006-8KR

DOI: 10.1002/cplu.201300094

Abstract (EN): This is a pioneering study on the synthesis and application of composites based on micro- and nanodiamonds for the photocatalytic degradation of environmental water pollutants. Micro- and nanodiamond powders (with particle sizes of 1-3m and 2-10nm, respectively) were combined with TiO2, by varying the carbon-phase content, and tested as composite photocatalysts for the degradation of diphenhydramine, which is a pharmaceutical water pollutant, under near-UV/Vis irradiation. These composites exhibited higher photocatalytic activity than the respective bare materials. In addition, composites prepared with pristine nanodiamonds were always more active than those prepared with microdiamonds of the same carbon content. A significant enhancement in the photocatalytic performance was observed on preparation of the composite with 15wt% of nanodiamonds oxidised in air at 703K; these oxidised nanodiamonds contained mainly carboxylic anhydrides, lactones, phenols and, to a lesser extent, carbonyl/quinone groups on their surface.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: DOI:10.1002/cplu.201300094

Nº de páginas: 7