{"title":"Synergistically-mediated highly-efficient visible-light-driven hydrogen evolution activity using Ohmic/Schottky-type dual-junctions and sulfur vacancy","authors":"","doi":"10.1016/j.jcis.2024.09.006","DOIUrl":null,"url":null,"abstract":"<div><p>Enabling highly-efficient multiplex-optimization photocatalysts is critical to overcome the bottlenecks of hydrogen evolution reaction efficiency and photostability. Herein, novel CoS/S<sub>v</sub>-ZnIn<sub>2</sub>S<sub>4</sub>/MoS<sub>2</sub> composites are successfully synthesized through an <em>in situ</em> technique. Taking advantage of the synergistic effect of sulfur vacancy, Schottky-type MoS<sub>2</sub>/S<sub>v</sub>-ZnIn<sub>2</sub>S<sub>4</sub> junction and Ohmic-type CoS/S<sub>v</sub>-ZnIn<sub>2</sub>S<sub>4</sub> junction, the light absorption, electron/hole separation efficiency, charge transfer rate and hydrogen reduction reaction dynamic can be significantly enhanced. As a result, an impressive photocatalytic hydrogen evolution rate of 18.43 mmol g<sup>−1</sup> h<sup>−1</sup> is achieved under the visible-light irradiation. Furthermore, apparent quantum efficiencies of 72.14 % and 9.91 % are also achieved under 350 and 420 nm monochromatic light irradiation. This work presents an <em>in situ</em> perspective to design multiplex-optimization photocatalytic system for highly-efficient hydrogen production.</p></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":null,"pages":null},"PeriodicalIF":9.4000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Colloid and Interface Science","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021979724020642","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Enabling highly-efficient multiplex-optimization photocatalysts is critical to overcome the bottlenecks of hydrogen evolution reaction efficiency and photostability. Herein, novel CoS/Sv-ZnIn2S4/MoS2 composites are successfully synthesized through an in situ technique. Taking advantage of the synergistic effect of sulfur vacancy, Schottky-type MoS2/Sv-ZnIn2S4 junction and Ohmic-type CoS/Sv-ZnIn2S4 junction, the light absorption, electron/hole separation efficiency, charge transfer rate and hydrogen reduction reaction dynamic can be significantly enhanced. As a result, an impressive photocatalytic hydrogen evolution rate of 18.43 mmol g−1 h−1 is achieved under the visible-light irradiation. Furthermore, apparent quantum efficiencies of 72.14 % and 9.91 % are also achieved under 350 and 420 nm monochromatic light irradiation. This work presents an in situ perspective to design multiplex-optimization photocatalytic system for highly-efficient hydrogen production.
期刊介绍：
The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality.
Emphasis:
The journal emphasizes fundamental scientific innovation within the following categories:
A.Colloidal Materials and Nanomaterials
B.Soft Colloidal and Self-Assembly Systems
C.Adsorption, Catalysis, and Electrochemistry
D.Interfacial Processes, Capillarity, and Wetting
E.Biomaterials and Nanomedicine
F.Energy Conversion and Storage, and Environmental Technologies
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