Boosting photocatalytic oxygen reduction to hydrogen peroxide via chemisorbed oxygen activation on polydopamine-coated zinc oxide

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2025-03-21 DOI:10.1016/j.jcis.2025.137370

Shuai Dou , Yuming Dong , Yaning Zhang , Yunhang Shao , Hongyan Liu , Yongfa Zhu , Chengsi Pan

{"title":"Boosting photocatalytic oxygen reduction to hydrogen peroxide via chemisorbed oxygen activation on polydopamine-coated zinc oxide","authors":"Shuai Dou , Yuming Dong , Yaning Zhang , Yunhang Shao , Hongyan Liu , Yongfa Zhu , Chengsi Pan","doi":"10.1016/j.jcis.2025.137370","DOIUrl":null,"url":null,"abstract":"<div><div>Harnessing solar energy to produce hydrogen peroxide (H2O2) from water (H2O) and dioxygen (O2) via artificial photosynthesis is an attractive route. However, the production of H2O2 is significantly hindered by slow mass transfer, primarily due to the low solubility and diffusion coefficient of O2 in water, particularly when the oxygen reduction reaction (ORR) predominates. To tackle this challenge, we propose that the polydopamine-coated zinc oxide nanoparticle with oxygen vacancies (PDA@ZnO1−x) core–shell photocatalyst exhibits excellent oxygen adsorption capability and promotes the two-electron reduction of O2. In-situ Electron paramagnetic resonance (EPR) and O2-Temperature-programmed desorption (TPD) confirmed that the semiquinone radicals (SQ•) within the PDA shell effectively chemisorb oxygen. Notably, PDA@ZnO1−x exhibited a high H2O2 production rate of 3.40 mM/h under visible light and an apparent quantum efficiency of 44.1 % at 400 nm. This work presents a significant strategy for improving oxygen utilization to achieve efficient photocatalytic production of H2O2.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137370"},"PeriodicalIF":9.4000,"publicationDate":"2025-03-21","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/S0021979725007611","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

Harnessing solar energy to produce hydrogen peroxide (H₂O₂) from water (H₂O) and dioxygen (O₂) via artificial photosynthesis is an attractive route. However, the production of H₂O₂ is significantly hindered by slow mass transfer, primarily due to the low solubility and diffusion coefficient of O₂ in water, particularly when the oxygen reduction reaction (ORR) predominates. To tackle this challenge, we propose that the polydopamine-coated zinc oxide nanoparticle with oxygen vacancies (PDA@ZnO_1−x) core–shell photocatalyst exhibits excellent oxygen adsorption capability and promotes the two-electron reduction of O₂. In-situ Electron paramagnetic resonance (EPR) and O₂-Temperature-programmed desorption (TPD) confirmed that the semiquinone radicals (SQ•) within the PDA shell effectively chemisorb oxygen. Notably, PDA@ZnO_1−x exhibited a high H₂O₂ production rate of 3.40 mM/h under visible light and an apparent quantum efficiency of 44.1 % at 400 nm. This work presents a significant strategy for improving oxygen utilization to achieve efficient photocatalytic production of H₂O₂.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

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