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Platinum nanoparticles supported on defective tungsten bronze-type KSr2Nb5O15 as novel photocatalyst for efficient ethylene oxidation

Abstract

Efficient separation and extraction of photo-induced carriers are crucial aspects of efficient semiconductor photocatalytic systems employed for photocatalytic oxidation (PCO) technology. In this study, Pt-loaded KSr2Nb5O15 composite, as a novel photocatalyst, is reported for gaseous ethylene photo-oxidation, performing excellent PCO activity. Tungsten bronze-type KSr2Nb5O15 (KSNO) with surface oxygen vacancies is prepared by a facile and low-cost molten salt synthesis method at 1200 °C for 6 h and a possible morphology evolution process was proposed. Pt was loaded on KSNO through a facile photodeposition method. The strong metal−support interaction (SMSI) between Pt nanoparticles and oxygen-deficient KSNO support is beneficial for superior photocatalytic efficiency and stability toward ethylene photo-oxidation. What’s more, the structure and charge transfer path in the synthesized photocatalysts were investigated by X-ray photoelectron spectroscopy (XPS), high-resolution electron microscopy, and electron paramagnetic resonance (EPR).

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Publication details

The article was received on 26 May 2017, accepted on 10 Jul 2017 and first published on 11 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04611A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Platinum nanoparticles supported on defective tungsten bronze-type KSr2Nb5O15 as novel photocatalyst for efficient ethylene oxidation

    W. Zhang, X. Pan, P. Long, X. Liu, X. Long, Y. Yu and Z. Yi, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA04611A

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