{"title":"利用叶绿素衍生二聚体敏化二氧化钛光催化剂以实现光驱动氢气进化的动力学分析","authors":"Tianfang Zheng, Aijun Li, Hongyu Tu, Lingyun Pan, Shin-ichi Sasaki, Xiao-Feng Wang","doi":"10.1016/j.mtener.2024.101631","DOIUrl":null,"url":null,"abstract":"This study focuses on the kinetic analysis of chlorophyll-based dimer photosensitizers adsorbed on Pt/TiO photocatalyst for light-driven hydrogen evolution. To elucidate the detailed mechanism, four photosensitizers, a carboxylated chlorin () and its dimer derivatives connecting an accessory pigment of chlorin (), porphyrin (), and bacteriochlorin () were synthesized and their kinetic processes in photocatalytic hydrogen evolution were investigated. The results indicate that possesses the highest ability to produce photogenerated carriers, with an appropriate excited state lifetime, lowest propensity for charge recombination, and longest charge transfer lifetime. These favorable characteristics contribute to its exceptional photocatalytic activity compared with other photosensitizers. Specifically, the -sensitized Pt/TiO photocatalyst exhibits a remarkable hydrogen generation rate of 5.36 mmol/g/h. Moreover, these photosensitizers demonstrate excellent stability and multiple-experimental consistency. This study provides significant insights into the development of dyad photosensitizers and highlights their practical significance in the field of photocatalysis. By harnessing chlorophyll, we have successfully harnessed efficient and controlled hydrogen fuel generation through photocatalytic water splitting, thus paving the way for future advancements in clean and sustainable energy production.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"38 1","pages":""},"PeriodicalIF":9.0000,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Kinetic analysis of TiO2-based photocatalysts sensitized with chlorophyll-derived dimers for light-driven hydrogen evolution\",\"authors\":\"Tianfang Zheng, Aijun Li, Hongyu Tu, Lingyun Pan, Shin-ichi Sasaki, Xiao-Feng Wang\",\"doi\":\"10.1016/j.mtener.2024.101631\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study focuses on the kinetic analysis of chlorophyll-based dimer photosensitizers adsorbed on Pt/TiO photocatalyst for light-driven hydrogen evolution. To elucidate the detailed mechanism, four photosensitizers, a carboxylated chlorin () and its dimer derivatives connecting an accessory pigment of chlorin (), porphyrin (), and bacteriochlorin () were synthesized and their kinetic processes in photocatalytic hydrogen evolution were investigated. The results indicate that possesses the highest ability to produce photogenerated carriers, with an appropriate excited state lifetime, lowest propensity for charge recombination, and longest charge transfer lifetime. These favorable characteristics contribute to its exceptional photocatalytic activity compared with other photosensitizers. Specifically, the -sensitized Pt/TiO photocatalyst exhibits a remarkable hydrogen generation rate of 5.36 mmol/g/h. Moreover, these photosensitizers demonstrate excellent stability and multiple-experimental consistency. This study provides significant insights into the development of dyad photosensitizers and highlights their practical significance in the field of photocatalysis. By harnessing chlorophyll, we have successfully harnessed efficient and controlled hydrogen fuel generation through photocatalytic water splitting, thus paving the way for future advancements in clean and sustainable energy production.\",\"PeriodicalId\":18277,\"journal\":{\"name\":\"Materials Today Energy\",\"volume\":\"38 1\",\"pages\":\"\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2024-06-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today Energy\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.mtener.2024.101631\",\"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":"Materials Today Energy","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.mtener.2024.101631","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}
Kinetic analysis of TiO2-based photocatalysts sensitized with chlorophyll-derived dimers for light-driven hydrogen evolution
This study focuses on the kinetic analysis of chlorophyll-based dimer photosensitizers adsorbed on Pt/TiO photocatalyst for light-driven hydrogen evolution. To elucidate the detailed mechanism, four photosensitizers, a carboxylated chlorin () and its dimer derivatives connecting an accessory pigment of chlorin (), porphyrin (), and bacteriochlorin () were synthesized and their kinetic processes in photocatalytic hydrogen evolution were investigated. The results indicate that possesses the highest ability to produce photogenerated carriers, with an appropriate excited state lifetime, lowest propensity for charge recombination, and longest charge transfer lifetime. These favorable characteristics contribute to its exceptional photocatalytic activity compared with other photosensitizers. Specifically, the -sensitized Pt/TiO photocatalyst exhibits a remarkable hydrogen generation rate of 5.36 mmol/g/h. Moreover, these photosensitizers demonstrate excellent stability and multiple-experimental consistency. This study provides significant insights into the development of dyad photosensitizers and highlights their practical significance in the field of photocatalysis. By harnessing chlorophyll, we have successfully harnessed efficient and controlled hydrogen fuel generation through photocatalytic water splitting, thus paving the way for future advancements in clean and sustainable energy production.
期刊介绍:
Materials Today Energy is a multi-disciplinary, rapid-publication journal focused on all aspects of materials for energy.
Materials Today Energy provides a forum for the discussion of high quality research that is helping define the inclusive, growing field of energy materials.
Part of the Materials Today family, Materials Today Energy offers authors rigorous peer review, rapid decisions, and high visibility. The editors welcome comprehensive articles, short communications and reviews on both theoretical and experimental work in relation to energy harvesting, conversion, storage and distribution, on topics including but not limited to:
-Solar energy conversion
-Hydrogen generation
-Photocatalysis
-Thermoelectric materials and devices
-Materials for nuclear energy applications
-Materials for Energy Storage
-Environment protection
-Sustainable and green materials