化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (10) : 112-117. DOI: 10.19817/j.cnki.issn1006-3536.2022.10.022

新材料与新技术

Ag掺杂ZnFe₂O₄纳米颗粒的制备及光学气敏性能研究

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作者信息 +

Preparation and optical gas sensitivity of Ag doped ZnFe₂O₄ nanoparticle

Yan Yin^1,2, Wei Xin¹, Patima Nizamidin³, Renagul Abdurahman¹, Abliz Ymit³

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Received		Published
2021-06-09		2022-10-20
Issue Date	Revised Date
2022-11-01	2021-06-09

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摘要

采用液相法合成Ag掺杂铁酸锌纳米颗粒(Ag@ZFO)气敏材料,并通过X射线衍射仪、X射线能谱仪、场发射扫描电子显微镜和X射线光电子能谱仪对材料的组成、形貌及表面元素进行分析。分析结果表明,气敏材料含有面心立方Ag和尖晶石结构的铁酸锌(ZnFe₂O₄),焙烧温度升高导致产物粒径增大;Ag@ZFO存在一定的团聚,内部有明显孔隙。利用十二烷基苯磺酸钠(SDBS)分散Ag@ZFO,并将分散溶液固定于锡掺杂玻璃表面制得气敏薄膜,在紫外-可见分光光谱仪中检测薄膜的光学气敏性能,确定了SDBS分散Ag@ZFO气敏薄膜的最佳制备条件:SDBS质量分数为2%、分散温度为35℃、分散时间1.5h、转速为1700r/min。室温下Ag@ZFO气敏薄膜对H₂S气体的灵敏度优于纯ZnFe₂O₄纳米颗粒,且有良好的选择性。

Abstract

The gas-sensitive material of Ag doped ZnFe₂O₄ nanoparticles (Ag@ZFO) was synthesized by liquid phase method.The composition of the material was analyzed by X-ray diffraction (XRD) and X-ray energy spectroscopy (EDS).The morphology of the material was observed by field emission scanning electron microscopy (FESEM),and the elements on the surface of the material were analyzed by X-ray photoelectron spectroscopy (XPS).The results shown that the material contained face centered cubic Ag and spinel ZnFe₂O₄,and the particle size of the product increased with the increase of the calcination temperature.Ag@ZFO there was certain amount of agglomeration,there were obvious internal pores.The gas sensitive films were prepared by dispersing Ag@ZFO with sodium dodecyl benzene sulfonate (SDBS) and fixing the dispersing solution on the surface of tin-doped glass.The optical gas sensitive properties of the films were tested by UV-Vis spectrometer.The optimal film forming condition of SDBS dispersing Ag@ZFO sensitive film was explored.The results shown that:the sensitivity of Ag@ZFO to H₂S gas was better than that of pure ZnFe₂O₄ nanoparticles (ZnFe₂O₄ NPS) at room temperature at 2wt% SDBS,ultrasonic temperature at 35℃,ultrasonic time at 1.5h and rotational speed at 1700r/min,and had good selectivity.

关键词

Ag@ZFO气敏薄膜 / 掺杂 / 气敏性能 / 硫化氢

Key words

Ag@ZFO sensitive film / doping / gas sensitive performance / H₂S

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Ag掺杂ZnFe₂O₄纳米颗粒的制备及光学气敏性能研究[J]. 化工新型材料, 2022, 50(10): 112-117 DOI:10.19817/j.cnki.issn1006-3536.2022.10.022

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