Synthesis of V2O5@TiO2 core–shell hybrid composites for sunlight degradation of methylene blue. Issue 41 (7th April 2016)

• Record Type: Journal Article
• Authors: Yang, X. H.; Fu, H. T.; An, X. Z.; Jiang, X. C.; Yu, A. B.
• Is Part Of: RSC advances. Volume 6:Issue 41(2016)
• Page Start: 34103
• Page End: 34109
• Publication Date: 2016-04-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra03376h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : We have demonstrated a simple but efficient synthesis route to obtain V2 O5 @TiO2 core–shell nanostructures under mild conditions (≤100 °C in water). Abstract : This study has demonstrated a facile but efficient synthesis method to prepare vanadium oxide@titanium oxide (V2 O5 @TiO2 ) core–shell nanostructures using a water bath at mild temperatures (≤100 °C). This method shows a few unique features, including a short reaction time for fabricating core–shell nanostructures, no requirement of high temperature calcination (>500 °C) for TiO2 crystallization, easily tunable TiO2 shell thickness, high yield, and good reproducibility. With characterization using several advanced techniques (TEM, BET, XRD, XPS and UV-vis spectroscopy), the as-prepared V2 O5 @TiO2 nanocomposites were found to exhibit a large surface area, and a good stability. The experimental results show that the V2 O5 @TiO2 core–shell composites show a superior sunlight photocatalytic activity compared to the pure TiO2 nanoparticles for the degradation of organic dyes ( e.g., methylene blue), probably because of the matched energy bands between V2 O5 and TiO2 . These findings may bring new insights into the designing of TiO2 -based core–shell and other nanocomposites with enhanced photocatalytic efficiencies for environmental remediation.