ZnIn2S4 Quantum Dot/Mo-Doped WO2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

Xinyu Zhao, Suting Xie, Hengshuo Huang, Xiaochen Zhu, Junyi Li, Lixia Yang, Liangjiu Bai, Donglei Wei, Kun Yin, Huawei Yang, Hou Chen, Mingchuan Luo

Research output: Contribution to journalArticlepeer-review

Abstract

Photocatalytic aerobic oxidation desulfurization (PAODS) has emerged as a sustainable means for the desulfurization of fuels, which is, however, limited by the low efficiency of electron-hole separation in currently available catalytic systems. In this study, we report the design and synthesis of a ZnIn2S4 quantum dot (QD)/Mo-doped WO2.72 nanowire 0D/1D Z-scheme heterojunction photocatalyst for the PAODS of thiophenic sulfides. We elucidate that the incorporated Mo sites facilitate the localized surface plasmon resonance (LSPR) effect for the generation of hot electrons and also act as high-activity sites for sulfide oxidation. The integration of ZnIn2S4 QDs improves the adsorption of visible light and facilitates the separation of electron-hole pairs. The photocatalyst demonstrates outstanding activity with a mass specific activity of 3.91 mmol g-1 h-1. In particular, it successfully achieves the deep desulfurization of real diesel, effectively reducing the sulfur content to 9.4 ppm, which suggests its appealing practical potential. These findings offer valuable insights, both from a scientific and practical perspective, to develop high-performance photocatalysts for sustainable PAODS processes.

Original languageEnglish
Pages (from-to)11767-11776
Number of pages10
JournalACS Applied Nano Materials
Volume7
Issue number10
DOIs
StatePublished - 24 May 2024
Externally publishedYes

Keywords

  • dibenzothiophene
  • heterojunction
  • indium zinc sulfide
  • monoclinic tungsten oxide
  • photocatalytic oxidative desulfurization

ASJC Scopus subject areas

  • General Materials Science

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