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Effect of PVP on gas‐sensing properties of ZnO micro/nanostructure materials in SDS‐PVP composite
Author(s) -
Chen Hiaxia,
Yu Hai,
Cui Shu,
Liu Chengyou
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13261
Subject(s) - polyvinylpyrrolidone , materials science , hydrothermal circulation , sodium dodecyl sulfate , x ray photoelectron spectroscopy , zinc , microstructure , chemical engineering , composite number , scanning electron microscope , nanostructure , nanotechnology , composite material , chromatography , metallurgy , polymer chemistry , chemistry , engineering
Abstract ZnO is often used as gas sensor. In order to increase the sensitivity of the sensors, many methods are used to change the gas‐sensing properties. In this paper, ZnO was synthesized by hydrothermal method using Zn (NO 3 ) 2 as a zinc source. Sodium lauryl sulfate (SDS) and polyvinylpyrrolidone (PVP) were added into the system to control microstructure and surface morphology of ZnO nanoparticles. The SDS was kept constant, and the PVP was changed. The morphology and composite were investigated by field emission scanning electron microscopy and X‐ray diffraction. The chemical valence of the elements was determined by X‐ray photoelectron spectroscopy. The sensing properties were investigated at different PVP components. It is found that ZnO has a red zinc structure. When the m SDS :m PVP = 1:1, the sensing sensitivity is best. The mechanism of equivalent matching structure optimization performance is proposed.