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Issue 5, 2020
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Carbon nitride mediated strong metal–support interactions in a Au/TiO2 catalyst for aerobic oxidative desulfurization

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Abstract

Supported Au nanocatalysts have been regarded as efficient catalysts. However, their poor thermal stability has hindered their extensive application. Herein, Au-TiO2 nanoparticles (NPs) with outstanding thermal stability were prepared by a novel carbon nitride (C3N4)-mediated synthetic strategy. The C3N4 layer on TiO2 functioned as a sacrificial agent and mediated the engineering of a strong metal–support interaction (SMSI) between the TiO2 support and Au NPs. A SMSI is successfully formed after the removal of the C3N4 sacrificial agent. The formation of a SMSI was found to rely on the thin coating layer of TiO2 around Au NPs and the electron transfer effect. The SMSI provides the Au NPs with a boosted oxygen activation performance and enhanced the catalytic performance of aerobic oxidative desulfurization under mild conditions. Moreover, the SMSI induces a promoted thermal stability and good sintering resistance during the oxidative desulfurization process. This work could provide a simple strategy to enhance the thermal stability of noble metal NPs.

Graphical abstract: Carbon nitride mediated strong metal–support interactions in a Au/TiO2 catalyst for aerobic oxidative desulfurization

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Article information


Submitted
17 Sep 2019
Accepted
19 Jan 2020
First published
20 Jan 2020

Inorg. Chem. Front., 2020,7, 1212-1219
Article type
Research Article

Carbon nitride mediated strong metal–support interactions in a Au/TiO2 catalyst for aerobic oxidative desulfurization

M. Liu, J. He, P. Wu, L. Lu, C. Wang, L. Chen, M. Hua, W. Zhu and H. Li, Inorg. Chem. Front., 2020, 7, 1212
DOI: 10.1039/C9QI01195A

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