Sustainable H2 Production from Lignocellulosic Biomass over MoS2 Modified Sulfur Vacancy Enriched ZnIn2S4 Photocatalyst

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-12-17 DOI:10.1021/acscatal.4c05707

Ji-Ping Tang, Yan Chen, Zi-Yi Wang, Yun-Hui Hu, Jia-Hao Wang, Liang Bao, Zong-Yan Zhao, Yong-Jun Yuan

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引用次数: 0

Abstract

Exploring visible-light-responsive photocatalysts for photocatalytic lignocellulosic biomass-to-H₂ conversion remains a glamorous but challenging goal because the photogenerated holes cannot directly transfer to biomass owing to the absence of a charge transfer channel. Herein, we design ZnIn₂S₄ nanosheets with abundant sulfur vacancy (V_S-ZnIn₂S₄) as visible light responsive photocatalysts for photocatalytic H₂ production from lignocellulosic biomass in the presence of MoS₂ as the cocatalyst. In this smartly designed photocatalysts, the sulfur vacancy in ZnIn₂S₄ reduces the energy barrier of ^•OH generation reaction and results in the fast dynamics for the generation of ^•OH, which acts as the crucial species for the oxygenolysis of lignocellulosic biomass. As expected, the H₂ generation rate of the optimized MoS₂/V_S-ZnIn₂S₄ photocatalyst in α-cellulose and bamboo powder aqueous solution achieves 1572 and 133 μmol·g^–1·h^–1, respectively. This study validates the feasibility of sulfur vacancy to boost visible light photocatalytic conversion of lignocellulosic biomass into H₂ fuel.

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利用 MoS2 改性硫空位富集 ZnIn2S4 光催化剂从木质纤维素生物质中生产可持续的 H2

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.