Abstract
Pt decorated TiO2 (Pt@TiO2) nanoparticles were synthesised via the sol–gel approach and subsequent thermal decomposition of chloroplatinic acid. Characterisations with scanning electron microscopy and X-ray diffraction showed that the anatase titanium oxide (TiO2) nanoparticles were around 30 nm in diameter. The photocatalytic activities of Pt@TiO2 were investigated by measurement the degradation of methyl orange (MO) solution under ultraviolet light irradiation, the results indicated that the Pt@TiO2 nanoparticles exhibited a markedly enhanced photocatalytic activity in the degradation of MO when compared to pure anatase TiO2 nanoparticles. The improved photocatalytic activity is interpreted in terms of the formation of metal-semiconductor junction at the interface of Pt/TiO2, which is favour of the carrier separation upon photoexcitation. Our results provide an approach to prepare highly efficient photocatalyst to degrade organic pollutants in water.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
