As a gas sensing material,p-type semiconductor metal oxide has the characteristics of rapid response and high selectivity.It can be used in the preparation and development of gas sensors.The network structure with abundant gas adsorption sites obtained by electrostatic spinning method,which can enhance the gas sensing of materials.P-type semiconductor nickel oxide(NiO) was prepared by electrospinning with polyvinylpyrrolidone (PVP) and nickel acetate tetrahydrate as raw materials.NiO fibers with reticular structure were synthesized.The structure,morphology,composition and specific surface properties of the materials were characterized by X-ray diffraction,scanning electron microscopy,X-ray photoelectron spectroscopy and specific surface area.Meanwhile,the gas sensing of the materials was measured.The effect of calcination temperature on the gas sensing properties of the materials was investigated.At working temperature of 250℃,the sensor assembled with NiO acquired at calcination temperature of 500℃ showed rapid response characteristics (response time of 5s),good selectivity and stability to 50mg/L acetone.
Wei Qiming, Sun Lixia, Zhu Linna, Yuan Xueling, Liao Dankui, Sun Jianhua
. Preparation and gas sensing of NiO with network structure[J]. New Chemical Materials, 2021
, 49(3)
: 181
-185
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.041
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