Synthesis and assessment of a graphene-based composite photocatalyst

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Pedro Magalhães (Author) FEUP; Joana Ângelo (Author) FEUP; Vera M. Sousa (Author) FEUP; Olga C. Nunes (Author) FEUP; Luísa Andrade (Author) FEUP; Adélio Mendes (Author) FEUP

Journal

Title: Biochemical Engineering Journal

Vol. 104

Pages: 20-26

ISSN: 1369-703X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 12 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences > Engineering > Chemical engineering

FOS: Engineering and technology > Chemical engineering

Associated Projects

BI-DSC - Building Integrated Dye Sensitized Solar Cells

PTDC/EQU-EQU/115614/2009 - Síntese e caraterização de novos fotocatalisadores compósitos de TiO2-grafeno: aplicação no abatimento focotacalítico de NOx e fotoeletrólise da água para produção de hidrogénio

FCT/CAPES 4.4.1.00.01/2012 - Desenvolvimento de caraterização de fotocatalisadores compósitos de dióxido de titânio-grafeno

Other information

Authenticus ID: P-00G-N2A

DOI: 10.1016/j.bej.2015.05.016

Abstract (EN): A novel composite photocatalyst prepared from graphene and commercial TiO2 (P25 from Evonik) was synthesized, exhibiting enhanced photocatalytic activity for methylene blue degradation, when compared with pristine P25. Additionally, the new catalyst showed 20% more NO conversion under UV light than P25. The band gap of the catalyst, obtained from diffuse reflectance, was 2.95 eV indicating an extended light absorption up to 420 nm. The novel photocatalyst was further tested for inactivating microorganisms showing better results than the reference photocatalyst. Under visible light, the viability loss of the reference bacterial strain Escherichia coil DSM 1103 was two times higher than with the bare P25; it was observed 29% of inactivation with the P25/graphene composite and 14% with the P25 sample, following standard ISO 27447:2009.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7