Ting Tang , Jiwu Zhao , Yongli Shen , Fan Yang , Shuang Yao , Changhua An
{"title":"碳点桥接 Zn0.5Cd0.5S,其界面酰胺键可促进电子转移,从而高效光催化生产过氧化氢","authors":"Ting Tang , Jiwu Zhao , Yongli Shen , Fan Yang , Shuang Yao , Changhua An","doi":"10.1016/j.apcatb.2024.123721","DOIUrl":null,"url":null,"abstract":"<div><p>Photocatalytic H<sub>2</sub>O<sub>2</sub><span> production has gained significant attention as an environmentally friendly approach. The key is to explore efficient photocatalysts with sufficient active sites and excellent electron transfer capacity. Herein, we propose a novel approach by incorporating carbon dots (CDs) on ethylenediamine capped Zn</span><sub>0.5</sub>Cd<sub>0.5</sub>S, which was bridged with an interfacial amide bond. Smooth transfer of photoinduced electrons from Zn<sub>0.5</sub>Cd<sub>0.5</sub>S to carbon dots via a high-speed electron channel is afforded by interfacial amide bond. A remarkable H<sub>2</sub>O<sub>2</sub><span> yield with a rate of 252 μmol/h and an apparent quantum yield (AQY) of 31 % at 400 nm is achieved. Photoelectrochemical analysis and density function theory (DFT) calculation reveal CDs with abundant oxygenous functional groups as active sites, boosting activity and selectivity. This interfacial engineering strategy with the acceleration of electrons transfer and enhanced 2e</span><sup>-</sup> selectivity can be applied to advanced photocatalytic systems for the achievement of valuable organics, environmental purification and new energy carriers.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":20.2000,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Carbon dots bridged Zn0.5Cd0.5S with interfacial amide bond facilitating electron transfer for efficient photocatalytic hydrogen peroxide production\",\"authors\":\"Ting Tang , Jiwu Zhao , Yongli Shen , Fan Yang , Shuang Yao , Changhua An\",\"doi\":\"10.1016/j.apcatb.2024.123721\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Photocatalytic H<sub>2</sub>O<sub>2</sub><span> production has gained significant attention as an environmentally friendly approach. The key is to explore efficient photocatalysts with sufficient active sites and excellent electron transfer capacity. Herein, we propose a novel approach by incorporating carbon dots (CDs) on ethylenediamine capped Zn</span><sub>0.5</sub>Cd<sub>0.5</sub>S, which was bridged with an interfacial amide bond. Smooth transfer of photoinduced electrons from Zn<sub>0.5</sub>Cd<sub>0.5</sub>S to carbon dots via a high-speed electron channel is afforded by interfacial amide bond. A remarkable H<sub>2</sub>O<sub>2</sub><span> yield with a rate of 252 μmol/h and an apparent quantum yield (AQY) of 31 % at 400 nm is achieved. Photoelectrochemical analysis and density function theory (DFT) calculation reveal CDs with abundant oxygenous functional groups as active sites, boosting activity and selectivity. This interfacial engineering strategy with the acceleration of electrons transfer and enhanced 2e</span><sup>-</sup> selectivity can be applied to advanced photocatalytic systems for the achievement of valuable organics, environmental purification and new energy carriers.</p></div>\",\"PeriodicalId\":244,\"journal\":{\"name\":\"Applied Catalysis B: Environmental\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":20.2000,\"publicationDate\":\"2024-01-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis B: Environmental\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926337324000328\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis B: Environmental","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926337324000328","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Carbon dots bridged Zn0.5Cd0.5S with interfacial amide bond facilitating electron transfer for efficient photocatalytic hydrogen peroxide production
Photocatalytic H2O2 production has gained significant attention as an environmentally friendly approach. The key is to explore efficient photocatalysts with sufficient active sites and excellent electron transfer capacity. Herein, we propose a novel approach by incorporating carbon dots (CDs) on ethylenediamine capped Zn0.5Cd0.5S, which was bridged with an interfacial amide bond. Smooth transfer of photoinduced electrons from Zn0.5Cd0.5S to carbon dots via a high-speed electron channel is afforded by interfacial amide bond. A remarkable H2O2 yield with a rate of 252 μmol/h and an apparent quantum yield (AQY) of 31 % at 400 nm is achieved. Photoelectrochemical analysis and density function theory (DFT) calculation reveal CDs with abundant oxygenous functional groups as active sites, boosting activity and selectivity. This interfacial engineering strategy with the acceleration of electrons transfer and enhanced 2e- selectivity can be applied to advanced photocatalytic systems for the achievement of valuable organics, environmental purification and new energy carriers.
期刊介绍:
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.