Hierarchical Tubular Architecture Constructed by Vertically Aligned CoS2-MoS2 Nanosheets for Hydrogen Evolution Electrocatalysis

被引:19
作者
Cai, Ze-Xing [1 ,4 ,5 ]
Na, Jongbeom [2 ,3 ,4 ,5 ]
Lin, Jianjian [2 ]
Alshehri, Abdulmohsen Ali [6 ]
Alzahrani, Khalid Ahmed [6 ]
Alghamdi, Yousef Gamaan [6 ]
Lim, Hyunsoo [4 ,5 ]
Zheng, Jie [7 ]
Xia, Wei [8 ]
Wang, Zhong-Li [9 ]
Yamauchi, Yusuke [2 ,3 ,4 ,5 ]
机构
[1] Xinyang Normal Univ, Sch Phys & Elect Engn, Xinyang 464000, Peoples R China
[2] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Qingdao 266042, Peoples R China
[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
[4] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
[5] Univ Queensland, AIBN, Brisbane, Qld 4072, Australia
[6] King Abdulaziz Univ, Chem Dept, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia
[7] Qingdao Univ, Coll Text Clothing, Ind Res Inst Nonwoven & Tech Text, Qingdao 266071, Peoples R China
[8] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Jiangsu Key Lab Mat & Technol Energy Convers, Nanjing 210016, Peoples R China
[9] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
基金
日本学术振兴会; 澳大利亚研究理事会;
关键词
CoS2-MoS2; hydrogen evolution reaction; hierarchical tubular structures; metal-organic frameworks; templating strategy; EFFICIENT BIFUNCTIONAL ELECTROCATALYST; ACTIVE EDGE SITES; MOS2; NANOSHEETS; GRAPHENE; CATALYST; CO;
D O I
10.1002/chem.201905123
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Developing efficient electrocatalysts for the hydrogen evolution reaction (HER) is crucial for establishing a sustainable and environmentally friendly energy system, but it is still a challenging issue. Herein, hierarchical tubular-structured CoS2-MoS2/C as efficient electrocatalysts are fabricated through a unique metal-organic framework (MOF) mediated self-sacrificial templating. Core-shell structured MoO3@ZIF-67 nanorods are used both as a precursor and a sacrificial template to form the one-dimensional tubular heterostructure where vertically aligned two-dimensional CoS2-MoS2 nanosheets are formed on the MOF-derived carbon tube. Trace amounts of noble metals (Pd, Rh, and Ru) are successfully introduced to enhance the electrocatalytic property of the CoS2-MoS2/C nanocomposites. The as-synthesized hierarchical tubular heterostructures exhibit excellent HER catalytic performance owing to the merits of the hierarchical hollow architecture with abundantly exposed edges and the uniformly dispersed active sites. Impressively, the optimal Pd-CoS2-MoS2/C-600 catalyst delivers a current density of 10 mA cm(-2) at a low overpotential of 144 mV and a small Tafel slope of 59.9 mV/dec in 0.5 m H2SO4. Overall, this MOF-mediated strategy can be extended to the rational design and synthesis of other hollow heterogeneous catalysts for scalable hydrogen generation.
引用
收藏
页码:6195 / 6204
页数:10
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