Co-catalytic Effects of CoS2 on the Activity of the MoS2 Catalyst for Electrochemical Hydrogen Evolution

被引:62
作者
Bose, Ranjith [1 ,2 ]
Jin, Zhenyu [1 ]
Shin, Seokhee [1 ]
Kim, Sungjoon [1 ]
Lee, Sunyoung [1 ]
Min, Yo-Sep [1 ]
机构
[1] Konkuk Univ, Dept Chem Engn, 120 Neungdong Ro, Seoul 143701, South Korea
[2] Hanyang Univ, Dept Chem Engn, 222 Wangsimni Ro, Seoul 133791, South Korea
关键词
X-RAY PHOTOELECTRON; ONE-POT SYNTHESIS; EFFICIENT ELECTROCATALYST; MOLYBDENUM-DISULFIDE; NANOPARTICLES; PERFORMANCE; NANOSHEETS; NANOWIRES; GRAPHENE; COBALT;
D O I
10.1021/acs.langmuir.7b00580
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
MoS2 is a promising material to replace the Pt catalyst in the electrochemical hydrogen evolution reaction (HER). It is well known that the activity of the MoS2 catalyst, in the HER is significantly promoted by doping cobalt atoms. Recently, the Co Mo S phase, in which cobalt atoms decorate the edge positions of the MoS2 slabs, has been identified as a co -catalytic phase in the Co -doped MoS2 (Co-MoSx) with low Co content. Here, we report the effect of the incorporation of cobalt atoms in the chemical state of the Co-MoSx catalyst, which gives rise to the co-catalytic effect. Co-MoSx catalysts with various Co contents were prepared on carbon fiber paper by a simple hydrothermal process. On the Co-MoSx catalyst with high Co content (Co/Mo c=.1 2.3), a dramatically higher catalytic activity was observed compared to that for the catalyst with low Co content (Co/Mo 0.36). Furthermore, the co-catalytic phase in the Co-MoSx catalyst with the high Co content was found not to be the Co Mo S phase but was identified as CoS2 by Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. It is believed that CoS2 is an alternative choice to co-catalyze HER on MoS2-based catalysts.
引用
收藏
页码:5628 / 5635
页数:8
相关论文
共 32 条
[1]   A COMBINED X-RAY PHOTOELECTRON AND MOSSBAUER EMISSION-SPECTROSCOPY STUDY OF THE STATE OF COBALT IN SULFIDED, SUPPORTED, AND UNSUPPORTED CO-MO CATALYSTS [J].
ALSTRUP, I ;
CHORKENDORFF, I ;
CANDIA, R ;
CLAUSEN, BS ;
TOPSOE, H .
JOURNAL OF CATALYSIS, 1982, 77 (02) :397-409
[2]   Amorphous Molybdenum Sulfide Catalysts for Electrochemical Hydrogen Production: Insights into the Origin of their Catalytic Activity [J].
Benck, Jesse D. ;
Chen, Zhebo ;
Kuritzky, Leah Y. ;
Forman, Arnold J. ;
Jaramillo, Thomas F. .
ACS CATALYSIS, 2012, 2 (09) :1916-1923
[3]   Importance of Hydrophilic Pretreatment in the Hydrothermal Growth of Amorphous Molybdenum Sulfide for Hydrogen Evolution Catalysis [J].
Bose, Ranjith ;
Balasingam, Suresh Kannan ;
Shin, Seokhee ;
Jin, Zhenyu ;
Kwon, Do Hyun ;
Jun, Yongseok ;
Min, Yo-Sep .
LANGMUIR, 2015, 31 (18) :5220-5227
[4]   Core-shell MoO3-MoS2 Nanowires for Hydrogen Evolution: A Functional Design for Electrocatalytic Materials [J].
Chen, Zhebo ;
Cummins, Dustin ;
Reinecke, Benjamin N. ;
Clark, Ezra ;
Sunkara, Mahendra K. ;
Jaramillo, Thomas F. .
NANO LETTERS, 2011, 11 (10) :4168-4175
[5]   High-Performance Electrocatalysis Using Metallic Cobalt Pyrite (CoS2) Micro- and Nanostructures [J].
Faber, Matthew S. ;
Dziedzic, Rafal ;
Lukowski, Mark A. ;
Kaiser, Nicholas S. ;
Ding, Qi ;
Jin, Song .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (28) :10053-10061
[6]   Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production [J].
Gao, Min-Rui ;
Chan, Maria K. Y. ;
Sun, Yugang .
NATURE COMMUNICATIONS, 2015, 6
[7]   A bulky and flexible electrocatalyst for efficient hydrogen evolution based on the growth of MoS2 nanoparticles on carbon nanofiber foam [J].
Guo, Xin ;
Cao, Guo-lin ;
Ding, Fei ;
Li, Xinyuan ;
Zhen, Shuyu ;
Xue, Yi-fei ;
Yan, Yi-ming ;
Liu, Ting ;
Sun, Ke-ning .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (09) :5041-5046
[8]   Defect- and S-rich ultrathin MoS2 nanosheet embedded N-doped carbon nanofibers for efficient hydrogen evolution [J].
Guo, Yaxiao ;
Zhang, Xiaoyan ;
Zhang, Xueping ;
You, Tianyan .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (31) :15927-15934
[9]   Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts [J].
Jaramillo, Thomas F. ;
Jorgensen, Kristina P. ;
Bonde, Jacob ;
Nielsen, Jane H. ;
Horch, Sebastian ;
Chorkendorff, Ib .
SCIENCE, 2007, 317 (5834) :100-102
[10]  
Kibsgaard J, 2014, NAT CHEM, V6, P248, DOI [10.1038/NCHEM.1853, 10.1038/nchem.1853]