Activating MoS2/CNs by tuning (001) plane as efficient electrocatalysts for hydrogen evolution reaction. (26th January 2017)

• Record Type: Journal Article
• Authors: Hu, Wen-Hui; Shang, Xiao; Xue, Jing; Dong, Bin; Chi, Jing-Qi; Han, Guan-Qun; Liu, Yan-Ru; Li, Xiao; Yan, Kai-Li; Chai, Yong-Ming; Liu, Chen-Guang
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 4(2017)
• Page Start: 2088
• Page End: 2095
• Publication Date: 2017-01-26
• Subjects: Carbon nanospheres -- MoS2 -- N, N-Dimethylformamide -- Electrocatalysts -- Hydrogen evolution reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2016.10.145
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: MoS2 with (001) plane supported on carbon nanospheres (CNs) has been successfully synthesized by a facile solvothermal process. The effect of solvent and temperature on the growth of MoS2 /CNs has been investigated, respectively. XRD results show that (001) plane of MoS2 was synthesized when using mixture solvent of N, N-dimethylformamide (DMF) and H2 O. The electrochemical measurements show that MoS2 /CNs samples with (001) plane have the enhanced hydrogen evolution reaction (HER) activity than MoS2 /CNs without (001) plane. The effect of solvothermal temperature on (001) plane of MoS2 has been investigated. XRD results demonstrate the different interlayer spacing of 9.7 Å, 9.8 Å and 9.4 Å of (001) plane corresponding to 160, 200 and 240 °C, respectively, which may affect the electronic structure of MoS2 and bring different HER activity. TEM reveals the good interface adhesion between MoS2 and CNs at 200 °C, which may provide better conductivity and faster electron transfer rate. MoS2 /CNs with the largest (001) distance obtained at 200 °C has the better HER activity than other samples synthesized at other temperatures. Therefore, tuning (001) plane of MoS2 under optimized conditions including solvent and temperature may be a facile way to prepare excellent HER electrocatalysts. Graphical abstract: Highlights: (001) plane of MoS2 /CNs has been produced using mixture solvent of DMF and H2 O. Solvothermal temperature can affect the growth of (001) plane of MoS2 /CNs. MoS2 /CNs with the largest (001) distance has the best HER activity. Tuning (001) plane of MoS2 can be realized by changing solvent and temperature.