Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 2, Issue 2, Pages 1214-1220Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2014.05.006
Keywords
Pt/C-TiO2; In situ synthesis; Photocatalysis; Visible light; Toluene; Rhodamine B
Categories
Funding
- Ministry of National Development (MND)
- Built Environment and Agency for Science, Technology and Research (A*STAR) [SERC0821010017]
Ask authors/readers for more resources
The present work focuses on the facile synthesis and characterization of Pt/C-TiO2 and evaluation of its visible-light photocatalytic activities. Pt/C-TiO2 with 0.5-5.0 wt% Pt as visible light-active photocatalysts were prepared by a facile in situ synthesis approach through thermal oxidation of H2PtCl6 center dot 6H(2)O-impregnated TiC precursor. The carbon existing in substitutional and interstitial sites of TiO2 lattices extends the visible light absorption of TiO2 by either narrowing the bandgap directly or serving as photosensitizers. The metallic Pt nanoparticles uniformly distributed on the C-TiO2 surface further improve the photocatalytic efficiency by inhibiting the charge carrier recombination and promoting interfacial charge transfer. The enhanced photocatalytic performance was demonstrated on the destruction of gaseous toluene in air and decomposition of rhodamine B (RhB) in aqueous suspension, with the optimum loading at 1.0-2.0 wt%. The improvement was also found to outperform Ag/C-TiO2 synthesized with a similar approach, increasing its potential of being utilized for environmental remediation under visible light irradiation. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available