From All-Triazine C3N3 Framework to Nitrogen-Doped Carbon Nanotubes: Efficient and Durable Trifunctional Electrocatalysts

被引：57
作者：
Zeng, Jian [1 ]
Chen, Zhongxin [1 ]
Zhao, Xiaoxu [1 ]
Yu, Wei [1 ]
Wu, Shaofei [1 ]
Lu, Jiong [1 ]
Loh, Kian Ping [1 ]
Wu, Jishan [1 ]
机构：
[1] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore
来源：
ACS APPLIED NANO MATERIALS | 2019年 / 2卷 / 12期
关键词：
nitrogen-doped carbon nanotube; covalent triazine framework; oxygen reduction reaction; oxygen evolution reaction; hydrogen evolution reaction; OXYGEN REDUCTION REACTION; HYDROGEN EVOLUTION; GRAPHITIC LAYERS; ACTIVE-SITES; NITRIDE; GRAPHENE; PHOTOCATALYSTS; NANOPARTICLES; CARBIDE; NETWORKS;
D O I：
10.1021/acsanm.9b02011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new all-triazine C3N3 framework was synthesized via triflic acid-mediated polymerization of 2,4,6-tricyano-1,3,5-triazine in solution, followed by ionothermal treatment in ZnCl2. Complexation of C3N3 with FeCl3, followed by reduction, gave the Fe3O4/C3N3 composite. Subsequent pyrolysis of the composite afforded the iron-species-encapsulated, nitrogen-doped carbon nanotubes, which turned out to be efficient and durable trifunctional electrocatalysts. The optimized catalyst showed a half-wave potential of the oxygen reduction reaction similar to that of platinum/carbon and higher oxygen evolution reaction activity than IrO2. The catalyst also exhibits good hydrogen evolution reaction activity.
引用
收藏
页码：7969 / 7977
页数：17
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