{"title":"空间分离的聚三嗪酰亚胺氧化还原助催化剂促进光催化整体水分解","authors":"Qian Wang, Dandan Zheng, Zhiming Pan, Wandong Xing, Sibo Wang, Yidong Hou, Masakazu Anpo, Guigang Zhang","doi":"10.1002/adfm.202501889","DOIUrl":null,"url":null,"abstract":"<p>Poly (triazine imide) (PTI), a crystalline allotrope of polymeric carbon nitride, holds great promise for photocatalytic overall water splitting (OWS). However, previous results reveal that both H<sub>2</sub> and O<sub>2</sub> evolution cocatalysts prefer to deposit on the prismatic facets, which results in the undesired backward reaction and current unsatisfied quantum efficiency for OWS reaction. Herein, in situ decoration with heptazine based carbon nitride (HCN) at the interface of PTI is successfully employed to construct S-scheme hetero-phase junctions. The built-in electric field at the interface of PTI and HCN endows directed carrier separation, thereby enabling the separation of redox sites, as validated by theoretical and experimental results. Accordingly, the as-synthesized PTI/HCN with spatially separated charge carriers and restrained backward reaction achieves a solar-to-hydrogen energy conversion efficiency of 0.35% for photocatalytic OWS reaction.</p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"35 30","pages":""},"PeriodicalIF":19.0000,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Spatially Separated Redox Cocatalysts on Poly Triazine Imides Boosting Photocatalytic Overall Water Splitting\",\"authors\":\"Qian Wang, Dandan Zheng, Zhiming Pan, Wandong Xing, Sibo Wang, Yidong Hou, Masakazu Anpo, Guigang Zhang\",\"doi\":\"10.1002/adfm.202501889\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Poly (triazine imide) (PTI), a crystalline allotrope of polymeric carbon nitride, holds great promise for photocatalytic overall water splitting (OWS). However, previous results reveal that both H<sub>2</sub> and O<sub>2</sub> evolution cocatalysts prefer to deposit on the prismatic facets, which results in the undesired backward reaction and current unsatisfied quantum efficiency for OWS reaction. Herein, in situ decoration with heptazine based carbon nitride (HCN) at the interface of PTI is successfully employed to construct S-scheme hetero-phase junctions. The built-in electric field at the interface of PTI and HCN endows directed carrier separation, thereby enabling the separation of redox sites, as validated by theoretical and experimental results. Accordingly, the as-synthesized PTI/HCN with spatially separated charge carriers and restrained backward reaction achieves a solar-to-hydrogen energy conversion efficiency of 0.35% for photocatalytic OWS reaction.</p>\",\"PeriodicalId\":112,\"journal\":{\"name\":\"Advanced Functional Materials\",\"volume\":\"35 30\",\"pages\":\"\"},\"PeriodicalIF\":19.0000,\"publicationDate\":\"2025-02-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Functional Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202501889\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202501889","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Spatially Separated Redox Cocatalysts on Poly Triazine Imides Boosting Photocatalytic Overall Water Splitting
Poly (triazine imide) (PTI), a crystalline allotrope of polymeric carbon nitride, holds great promise for photocatalytic overall water splitting (OWS). However, previous results reveal that both H2 and O2 evolution cocatalysts prefer to deposit on the prismatic facets, which results in the undesired backward reaction and current unsatisfied quantum efficiency for OWS reaction. Herein, in situ decoration with heptazine based carbon nitride (HCN) at the interface of PTI is successfully employed to construct S-scheme hetero-phase junctions. The built-in electric field at the interface of PTI and HCN endows directed carrier separation, thereby enabling the separation of redox sites, as validated by theoretical and experimental results. Accordingly, the as-synthesized PTI/HCN with spatially separated charge carriers and restrained backward reaction achieves a solar-to-hydrogen energy conversion efficiency of 0.35% for photocatalytic OWS reaction.
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