Photocatalytic Hydrogen Evolution Based on Nitrogen-Containing Donor-Acceptor (D-A) Organic Conjugated Small Molecules

被引:19
|
作者
Yu, Jie [1 ]
Chang, Shufang [1 ]
Xu, Xiaoxiang [2 ,3 ]
He, Xiaoming [4 ]
Zhang, Chi [1 ]
机构
[1] Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, Shanghai 200092, Peoples R China
[2] Tongji Univ, Sch Chem Sci & Engn, Shanghai Key Lab Chem Assessment & Sustainabil, Putuo Peoples Hosp, Shanghai 200092, Peoples R China
[3] Tongji Univ, Clin & Cent Lab, Putuo Peoples Hosp, Shanghai 200092, Peoples R China
[4] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710119, Peoples R China
来源
基金
中国国家自然科学基金; 上海市自然科学基金;
关键词
conjugated small molecules; photocatalyst; water splitting; hydrogen evolution; single-atom substitution (O; S; Se); EFFICIENT PHOTOCATALYST; POLYIMIDE PHOTOCATALYST; TRIAZINE FRAMEWORKS; ATOM SUBSTITUTION; WATER; POLYMERS; SEMICONDUCTORS; NANOSHEETS; FULLERENE; DESIGN;
D O I
10.1021/acssuschemeng.0c05964
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Photocatalytic water splitting has attracted widespread attention as one of the eco-friendly technologies that can scalably produce low-cost renewable solar hydrogen. As a rare case, in this work, we apply organic conjugated small molecules to photocatalytic hydrogen evolution and compare the photocatalytic performance of CM1, CM2, and M1, whose number of N atoms is controlled by replacing the intramolecular electron donor unit with benzene, pyridine, and pyrazole, respectively. There is a clear correlation between the photocatalytic activity and the number of N atoms in the structure, as N atoms can be active sites for the photocatalytic interface reaction and help to improve the water dispersibility and contact of organic conjugated molecules through hydrogen-bonding interactions. In addition, we apply a single-atom substitution strategy (O, S, Se) to control the photoelectric properties of organic conjugated molecules. Among these molecules, M1 exhibits the best performance, even better than the previous series of polymers P2 and P4.
引用
收藏
页码:14253 / 14261
页数:9
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