In-Plane Charge Transport Dominates the Overall Charge Separation and Photocatalytic Activity in Crystalline Carbon Nitride
Guoqiang ZhangCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaJinyu ZhuCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaYangsen XuInstitute of Information Technology, Shenzhen Institute of Information Technology, Shenzhen, Guangdong 518172, PR ChinaYang ChenSchool of Environmental Science and Engineering, Qingdao University, Qingdao 266071, ChinaChuanxin HeCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaPeixin ZhangCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaYongliang LiCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaXiangzhong RenCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR ChinaHongwei MiCollege of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR China
2022en
ABI
Аннотация
Here, taking layered polymeric carbon nitride (CN) as an example, the dominant role of in-plane charge transport is demonstrated both theoretically and experimentally. The in-plane “sewing” and interlayer “cutting” effects of three alkaline potassium salts on the CN polymerization process are enhanced with the increase of alkalinity. The in-plane crystallinity-dependent charge transfer and separation and photocatalytic activity are elucidated through the samples of three alkaline potassium salt series. Our findings provide guidance for improving the photoelectric conversion efficiency by optimizing in-plane charge transfer rather than interlayer charge transfer, targeting layered photoelectric conversion materials.
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