{"title":"Building hollow multi-shell structured Zn2MnO4/CdS S-scheme heterojunction for boosted photocatalytic H2 production","authors":"Fangxuan Liu, Xiuyan Li, Bin Sun, Yanyan He, Tingting Gao, Guowei Zhou","doi":"10.1016/j.jmst.2025.06.033","DOIUrl":null,"url":null,"abstract":"Building an S-scheme heterojunction photocatalyst with a hollow multi-shell structure is regarded as of great significance to realize efficient H<sub>2</sub> production. Herein, a hollow multi-shell structured Zn<sub>2</sub>MnO<sub>4</sub>/CdS S-scheme heterojunction photocatalyst was successfully constructed via a coordination polymer self-assembly strategy combined with non-uniform shrinkage effect and subsequent hydrothermal treatment. In the unique heterojunction system, the hollow multi-shell structure bestows significant merits upon the design of photocatalysts for boosted photocatalytic H<sub>2</sub> production, including enhanced light capture ability, shortened photo-induced charge transfer distance, and provides abundant reactive sites. Simultaneously, the S-scheme mechanism not only promotes the separation and migration of photo-induced charge, but also additionally maintains the strong redox ability. As a result, Zn<sub>2</sub>MnO<sub>4</sub>/CdS heterojunction displays an unparalleled photocatalytic H<sub>2</sub> production rate of 22.42 mmol g<sup>-1</sup> h<sup>-1</sup>, almost 10.99 and 35.03 times that of pure Zn<sub>2</sub>MnO<sub>4</sub> and CdS, respectively. Simultaneously, the heterojunction also demonstrates outstanding cycling stability, with no significant decline in photocatalytic H<sub>2</sub> production activity after 10 cycles. Furthermore, the in-situ irradiated X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy further verify the S-scheme charge transfer pathway in Zn<sub>2</sub>MnO<sub>4</sub>/CdS heterojunction. Our study proposes an innovative viewpoint of hollow multi-shell structured S-scheme heterojunction photocatalyst for solar-driven H<sub>2</sub> production.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"109 1","pages":""},"PeriodicalIF":11.2000,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science & Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jmst.2025.06.033","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Building an S-scheme heterojunction photocatalyst with a hollow multi-shell structure is regarded as of great significance to realize efficient H2 production. Herein, a hollow multi-shell structured Zn2MnO4/CdS S-scheme heterojunction photocatalyst was successfully constructed via a coordination polymer self-assembly strategy combined with non-uniform shrinkage effect and subsequent hydrothermal treatment. In the unique heterojunction system, the hollow multi-shell structure bestows significant merits upon the design of photocatalysts for boosted photocatalytic H2 production, including enhanced light capture ability, shortened photo-induced charge transfer distance, and provides abundant reactive sites. Simultaneously, the S-scheme mechanism not only promotes the separation and migration of photo-induced charge, but also additionally maintains the strong redox ability. As a result, Zn2MnO4/CdS heterojunction displays an unparalleled photocatalytic H2 production rate of 22.42 mmol g-1 h-1, almost 10.99 and 35.03 times that of pure Zn2MnO4 and CdS, respectively. Simultaneously, the heterojunction also demonstrates outstanding cycling stability, with no significant decline in photocatalytic H2 production activity after 10 cycles. Furthermore, the in-situ irradiated X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy further verify the S-scheme charge transfer pathway in Zn2MnO4/CdS heterojunction. Our study proposes an innovative viewpoint of hollow multi-shell structured S-scheme heterojunction photocatalyst for solar-driven H2 production.
期刊介绍:
Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.