{"title":"化学键合界面构建共价有机框架/CsPbBr3 异质结,实现可见光驱动的高效光催化二氧化碳还原","authors":"Min Zhou, Zhiqing Wang, Aohan Mei, Keqiang Chen, Jianrong Zeng, Yueli Liu, Wen Chen","doi":"10.1039/d4ta04913f","DOIUrl":null,"url":null,"abstract":"Effective interface interaction is the key factor to improve the photocatalytic performance due to its rapid interfacial charge transport. However, the complex organic synthesis environment and abundance surface ligands for most metal halide perovskites (MHPs) nanocrystals (NCs) make it difficult to realize the strong interface interaction and rapid carrier transfer. Herein, the unique covalent organic framework (COF, TpBpy)/CsPbBr3 catalyst constructed by in-situ growth of CsPbBr3 NCs on COF in hydrobromic acid (HBr) solvent is formed with chemical bond (Pb-N coordination) to enhance the CO2 photoreduction performance. The chemically bonded interface facilitates the transport of photoelectrons from CsPbBr3 NCs to TpBpy throng Pb-N bond, forming TpBpy/CsPbBr3 heterojunction with strong interface interaction and enabling the effective separation of the photoexcited electron-hole pairs. As a result, the photocatalytic efficiency of TpBpy/CsPbBr3 heterojunctions reaches up to 239.46 μmol·g–1 h–1 (CO) with a high selectivity of 99.66% under the visible light irradiation, which is significantly higher than that of pure TpBpy (24.68 μmol·g–1 h–1, 97.45%) and CsPbBr3 NCs (12.58 μmol·g–1 h–1, 97.19%) and superior to previous reports about COF/perovskite heterojunction. This work demonstrates a potential strategy for the construction of COF/MHPs heterojunction with strong interface interaction, which has great potential in various optoelectronic applications.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Chemically bonded interface construction of covalent organic framework/CsPbBr3 heterojunction for efficient photocatalytic CO2 reduction driven by visible light\",\"authors\":\"Min Zhou, Zhiqing Wang, Aohan Mei, Keqiang Chen, Jianrong Zeng, Yueli Liu, Wen Chen\",\"doi\":\"10.1039/d4ta04913f\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Effective interface interaction is the key factor to improve the photocatalytic performance due to its rapid interfacial charge transport. However, the complex organic synthesis environment and abundance surface ligands for most metal halide perovskites (MHPs) nanocrystals (NCs) make it difficult to realize the strong interface interaction and rapid carrier transfer. Herein, the unique covalent organic framework (COF, TpBpy)/CsPbBr3 catalyst constructed by in-situ growth of CsPbBr3 NCs on COF in hydrobromic acid (HBr) solvent is formed with chemical bond (Pb-N coordination) to enhance the CO2 photoreduction performance. The chemically bonded interface facilitates the transport of photoelectrons from CsPbBr3 NCs to TpBpy throng Pb-N bond, forming TpBpy/CsPbBr3 heterojunction with strong interface interaction and enabling the effective separation of the photoexcited electron-hole pairs. As a result, the photocatalytic efficiency of TpBpy/CsPbBr3 heterojunctions reaches up to 239.46 μmol·g–1 h–1 (CO) with a high selectivity of 99.66% under the visible light irradiation, which is significantly higher than that of pure TpBpy (24.68 μmol·g–1 h–1, 97.45%) and CsPbBr3 NCs (12.58 μmol·g–1 h–1, 97.19%) and superior to previous reports about COF/perovskite heterojunction. This work demonstrates a potential strategy for the construction of COF/MHPs heterojunction with strong interface interaction, which has great potential in various optoelectronic applications.\",\"PeriodicalId\":82,\"journal\":{\"name\":\"Journal of Materials Chemistry A\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":10.7000,\"publicationDate\":\"2024-09-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry A\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1039/d4ta04913f\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta04913f","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Chemically bonded interface construction of covalent organic framework/CsPbBr3 heterojunction for efficient photocatalytic CO2 reduction driven by visible light
Effective interface interaction is the key factor to improve the photocatalytic performance due to its rapid interfacial charge transport. However, the complex organic synthesis environment and abundance surface ligands for most metal halide perovskites (MHPs) nanocrystals (NCs) make it difficult to realize the strong interface interaction and rapid carrier transfer. Herein, the unique covalent organic framework (COF, TpBpy)/CsPbBr3 catalyst constructed by in-situ growth of CsPbBr3 NCs on COF in hydrobromic acid (HBr) solvent is formed with chemical bond (Pb-N coordination) to enhance the CO2 photoreduction performance. The chemically bonded interface facilitates the transport of photoelectrons from CsPbBr3 NCs to TpBpy throng Pb-N bond, forming TpBpy/CsPbBr3 heterojunction with strong interface interaction and enabling the effective separation of the photoexcited electron-hole pairs. As a result, the photocatalytic efficiency of TpBpy/CsPbBr3 heterojunctions reaches up to 239.46 μmol·g–1 h–1 (CO) with a high selectivity of 99.66% under the visible light irradiation, which is significantly higher than that of pure TpBpy (24.68 μmol·g–1 h–1, 97.45%) and CsPbBr3 NCs (12.58 μmol·g–1 h–1, 97.19%) and superior to previous reports about COF/perovskite heterojunction. This work demonstrates a potential strategy for the construction of COF/MHPs heterojunction with strong interface interaction, which has great potential in various optoelectronic applications.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.