Alcohols Assisted Hydrothermal Synthesis of Defect‐Rich MoS 2  and Their Applications in Humidity Sensing | Zendy

Leng Xiaohui | Zendy; Wang Yiming | Zendy; Wang Fei | Zendy

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Alcohols Assisted Hydrothermal Synthesis of Defect‐Rich MoS 2 and Their Applications in Humidity Sensing

Author(s) -

Leng Xiaohui,

Wang Yiming,

Wang Fei

Publication year - 2019

Publication title -

advanced materials interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.671

H-Index - 65

ISSN - 2196-7350

DOI - 10.1002/admi.201900010

Subject(s) - materials science , hydrothermal circulation , molybdenum disulfide , ethylene glycol , raman spectroscopy , scanning electron microscope , fourier transform infrared spectroscopy , humidity , crystallization , doping , polyethylene glycol , chemical engineering , infrared spectroscopy , hydrothermal synthesis , absorbance , analytical chemistry (journal) , organic chemistry , optoelectronics , chemistry , optics , composite material , chromatography , physics , engineering , thermodynamics

The influence of different alcohols on hydrothermal synthesis of molybdenum disulfide (MoS 2 ) has been studied. X‐ray diffraction and scanning electron microscope results show that MoS 2 synthesized in water and water/polyethylene glycol exhibits good flower‐like crystallization while in ethanol/water, ethylene glycol/water, and glycerol/water, the MoS 2 shows a smaller size of 3D flower structure and larger layer distance. Strong absorbance peaks in Fourier‐transform infrared spectroscopy and Raman spectra indicate oxygen doping in MoS 2 . These defects from oxygen doping induce a good sensitivity to water vapor in the environment. A lower hydrothermal temperature (i.e., 180 and 200 °C) results in these defect rich MoS 2 and benefits the humidity sensing performance.

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