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Issue 36, 2017
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Platinum nanoparticles supported on defective tungsten bronze-type KSr2Nb5O15 as a novel photocatalyst for efficient ethylene oxidation

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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, a 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 the Pt nanoparticles and the 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).

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

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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, 2017,5, 18998-19006
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    Platinum nanoparticles supported on defective tungsten bronze-type KSr2Nb5O15 as a 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, 5, 18998
    DOI: 10.1039/C7TA04611A

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