FeS2 bridging function to enhance charge transfer between MoS2 and g-C3N4 for efficient hydrogen evolution reaction

被引：66
|
作者：
Li, Ying [1 ,5 ]
Zhu, Shijun [1 ]
Xu, Yao [1 ]
Ge, Riyue [1 ]
Qu, Jiangtao [2 ,3 ]
Zhu, Mingyuan [1 ]
Liu, Yang [5 ]
Cairney, Julie M. [2 ,3 ]
Zheng, Rongkun [4 ]
Li, Sean [6 ]
Zhang, Jiujun [5 ]
Li, Wenxian [1 ,5 ,6 ,7 ]
机构：
[1] Shanghai Univ, Inst Mat, Sch Mat Sci & Engn, 149 Yanchang Rd, Shanghai 200072, Peoples R China
[2] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia
[3] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
[4] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
[5] Shanghai Univ, Inst Sustainable Energy, Shanghai 200444, Peoples R China
[6] Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
[7] Shanghai Univ, Dept Phys, Shanghai Key Lab High Temp Supercond, Shanghai 200444, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2021年 / 421卷 / 421期
基金：
中国国家自然科学基金;
关键词：
MoS2; g-C3N4; FeS2; Electrocatalyst; Hydrogen evolution reaction; PHOSPHORUS-DOPED G-C3N4; NITRIDE NANOSHEETS; SURFACE-STRUCTURE; ACTIVE CATALYST; WATER OXIDATION; HYBRID; GRAPHENE; ELECTROCATALYSTS; PERFORMANCE; ELECTRODES;
D O I：
10.1016/j.cej.2020.127804
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
High-performance composite electrocatalysts of g-C3N4/FeS2/MoS2 for hydrogen evolution reaction (HER) is synthesized by the growth of molybdenum disulfide (MoS2) nanosheets from ferrous disulfide (FeS2) sites supported on graphite-like carbon nitride (g-C3N4) substrates. The high conductivity of such composite catalysts is induced by the Fe-S bond between FeS2 and MoS2 and Fe-N bond between FeS2 and g-C3N4. These two bonds of Fe-S and Fe-N can have a bridging function to provide efficient charge transfer channels between g-C3N4 and MoS2 via chemical bonding rather than physical attachment. Furthermore, the FeS2 sites can prevent the agglomeration of MoS2 nanosheets and also seed the MoS2 to form highly dispersed vertical growth nanosheets with more exposed edging active sites. As a result, this g-C3N4/FeS2/MoS2 catalyst exhibits both high catalytic HER activity and stability.
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页数：12
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