Synthesis of plasmonic W18O49 interconnected nanowire frameworks with strong photo-enhanced hydrogen evolution reaction activity

Yang, Renhao; Chueh, Lu-Yu; Liao, Sheng-Lun; Pan, Yung‐Tin

doi:10.1016/j.mtsust.2023.100485

Cited by 2 publications

(1 citation statement)

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“…Monoclinic tungsten oxide (WO 2.72 ), recognized as an n-type narrow-gap photocatalyst, possesses favorable electronic transport properties and exhibits high resistance to light-induced corrosion. Moreover, it can generate hot electrons through the local surface plasmon resonance (LSPR) effect. − The substantial presence of oxygen vacancies within WO 2.72 serves as abundant reactive sites for O 2 activation. − Building upon this foundation, WO 2.72 can be further improved through ingenious doping with foreign elements aimed at electronic optimization. Another crucial consideration for photocatalysts is the available light absorption spectra, which can be effectively broadened by the rational design of a heterojunction with energy-level-matched components. , …”

Section: Introductionmentioning

confidence: 99%

ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

Zhao,

Xie,

Huang

et al. 2024

ACS Appl. Nano Mater.

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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 ZnIn 2 S 4 quantum dot (QD)/Mo-doped WO 2.72 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 ZnIn 2 S 4 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.

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Section: Introductionmentioning

confidence: 99%

ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

Zhao,

Xie,

Huang

et al. 2024

ACS Appl. Nano Mater.

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Electronic Structure Modulating of W₁₈O₄₉ Nanospheres by Niobium Doping for Efficient Hydrogen Evolution Reaction

Guo,

Pan,

Gao

et al. 2024

Chemistry A European J

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Developing efficient electrocatalysts to reduce HER overpotential is vital to enhance hydrogen production efficiency and minimize energy consumption. Adjusting the electronic structure of transition metal oxides via elemental doping is a potent strategy to improve the effectiveness of electrocatalysts for hydrogen evolution. In this work, we synthesized a set of niobium‐doped tungsten oxides (Nbx‐W18O49) under anoxic conditions using a straightforward “one‐pot” solvothermal approach. After doping Nb, the oxygen vacancy content inside W18O49 was increased, which induced a synergistic effect with the active sites of tungsten. In acidic environments, the hydrogen evolution activity of the Nb0.6‐W18O49 electrocatalyst is second only by 20 wt% Pt/C. It attains a current density of ‐10 mA cm‐2 at an overpotential of 102 mV. By comparison with W18O49, Nb0.4‐W18O49 and Nb0.5‐W18O49, Nb0.6‐W18O49 demonstrates a reduced charge transfer resistance, which significantly enhances its conductivity and the speed of electron movement across interfaces. Coupled with this feature are notably faster HER kinetics. Additionally, it exhibits excellent stability, meaning it maintains its performance and structural integrity over prolonged periods and under various operational conditions. This article provides a new perspective for discovering inexpensive and efficient hydrogen evolution electrocatalyst materials.

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Synthesis of plasmonic W18O49 interconnected nanowire frameworks with strong photo-enhanced hydrogen evolution reaction activity

Cited by 2 publications

References 64 publications

ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

Electronic Structure Modulating of W₁₈O₄₉ Nanospheres by Niobium Doping for Efficient Hydrogen Evolution Reaction

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Synthesis of plasmonic W18O49 interconnected nanowire frameworks with strong photo-enhanced hydrogen evolution reaction activity

Cited by 2 publications

References 64 publications

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

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

Electronic Structure Modulating of W18O49 Nanospheres by Niobium Doping for Efficient Hydrogen Evolution Reaction

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Product

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ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

ZnIn₂S₄ Quantum Dot/Mo-Doped WO_2.72 Nanowire Heterojunctions Boost the Photocatalytic Desulfurization of Diesel

Electronic Structure Modulating of W₁₈O₄₉ Nanospheres by Niobium Doping for Efficient Hydrogen Evolution Reaction