Effects of Precursor Concentration on Dimensional Size, Defect State, and Gas Sensing Performance of MoS2 Sheets Synthesized by Hydrothermal Method

The objective of this study is to investigate effects of precursor concentration on dimensional size, defect state, and gas sensing performance of MoS2 sheets synthesized by hydrothermal method with various precursor concentrations (0.14–1.4 m) in fixed HCl solution (7 m). The MoS2 sheets show a def...

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Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2018-10, Vol.215 (20), p.n/a
Main Authors: Lee, Chang Min, Park, Geun Chul, Ahn, Cheol Hyoun, Choi, Jong Won, Park, Chae Hee, Cho, Hyung Koun, Lim, Jun Hyung, Joo, Jinho
Format: Article
Language:English
Subjects:
Defects
Detection
gas sensor
Gas sensors
hydrothermal synthesis
Molybdenum disulfide
morphology
MoS2
Nitrogen dioxide
precursor concentration
Precursors
Recovery time
Sheets
Specific surface
Surface area
Synthesis
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Summary:The objective of this study is to investigate effects of precursor concentration on dimensional size, defect state, and gas sensing performance of MoS2 sheets synthesized by hydrothermal method with various precursor concentrations (0.14–1.4 m) in fixed HCl solution (7 m). The MoS2 sheets show a defect‐rich and strained structure. When precursor concentration is increased, dimensional size of the sheet is increased while the specific surface area of the sheet is decreased. The MoS2 sensor made with 0.14 m precursor solution exhibits superior sensing performance with high sensitivity (372%) and rapid recovery time (
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.201800079