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Structural tailoring of molybdenum disulfide by argon plasma for efficient electrocatalysis performance
Author(s) -
Kumar Hitanshu,
Bharti Bandna,
Aslam Sehrish,
Sagar Rizwan Ur Rehman,
Wang Ke,
Gan Lin,
Hua Peng,
Zeng Xierong,
Su Yikun
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5509
Subject(s) - molybdenum disulfide , overpotential , electrocatalyst , nanowire , argon , molybdenum , plasma , materials science , chemical vapor deposition , chemical engineering , deposition (geology) , nanotechnology , chemistry , electrochemistry , electrode , composite material , metallurgy , organic chemistry , physics , quantum mechanics , engineering , paleontology , sediment , biology
Summary This article describes the synthesis of molybdenum disulfide (MoS 2 ) nanowires using chemical vapor deposition (CVD) method. The MoS 2 ‐nanowires converts into micro‐flake structures with the help of argon (Ar) plasma for the better hydrogen evolution reaction (HER) activity. The MoS 2 ‐nanowires treated by post‐Ar plasma at different time of intervals (20 seconds, 40 seconds, 60 seconds, and 3 minutes). The plasma treatment significantly tailored the structure of pristine MoS 2 ‐nanowires due to which additional active sites were produced at the surface of treated MoS 2 . A notable HER activity were achieved by plasma‐treated MoS 2 . To boost the HER activity up to next level, visible light was used at the time of electrocatalysis which enhanced the electrocatalytic activity almost double, which is evident by the low overpotential (190 mV) at current density of 10 mAcm −2 .