Construction of Graphitic C3N4-Based Intramolecular Donor鈥揂cceptor Conjugated Copolymers for Photocatalytic Hydrogen Evolution

详细信息    查看全文

• 作者：Xiangqian Fan ; Lingxia Zhang ; Ruolin Cheng ; Min Wang ; Mengli Li ; Yajun Zhou ; Jianlin Shi
• 刊名：ACS Catalysis
• 出版年：2015
• 出版时间：September 4, 2015
• 年：2015
• 卷：5
• 期：9
• 页码：5008-5015
• 全文大小：500K
• ISSN：2155-5435

文摘

The construction of intramolecular donor鈥揳cceptor conjugated copolymers has been devised for years to enhance the mobility of charge carriers in an organic photovoltaic field; however, surprisingly, similar strategies have not been reported in polymeric photocatalytic systems for promoting the separation of charge carriers. Graphitic carbon nitride (g-C₃N₄) is an emerging polymeric visible-light photocatalyst with high stability but still low photocatalytic efficiency. Here, we prepared a series of g-C₃N₄-based intramolecular donor鈥揳cceptor copolymers (aromatics-incorporated g-C₃N₄) via nucleophilic substitution/addition reactions. The copolymer showed remarkably enhanced and stable visible-light photocatalytic hydrogen evolution performance. The intramolecular charge transfer transition is first proposed to explain the photocatalytic activity of g-C₃N₄-based photocatalysts under long-wavelength-light irradiation.