Ag掺杂ZnFe_(2)O_(4)纳米颗粒的制备及光学气敏性能研究  

Preparation and optical gas sensitivity of Ag doped ZnFe_(2)O_(4) nanoparticle

作　　者：燕音 魏鑫 帕提曼·尼扎木丁[3] 热娜古丽·阿不都热合曼 阿布力孜·伊米提[3] Yan Yin;Wei Xin;Patima Nizamidin;Renagul Abdurahman;Abliz Ymit(Xinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry,College of Chemistry and Environmental Science,Kashgar University,Kashgar 844006;School of Chemical and Environmental Engineering,Xinjiang Institute of Engineering,Urumqi 830091;College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046)

机构地区：[1]喀什大学化学与环境科学学院新疆药食用植物资源化学重点实验室,喀什844006 [2]新疆工程学院化学与环境工程学院,乌鲁木齐830091 [3]新疆大学化学学院,乌鲁木齐830046

出　　处：《化工新型材料》2022年第10期112-117,共6页New Chemical Materials

基　　金：新疆维吾尔自治区高校科研计划项目(XJEDU2018Y036)。

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(ZnFe_(2)O_(4)),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:SD-BS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H_(2)S气体的灵敏度优于纯ZnFe_(2)O_(4)纳米颗粒,且有良好的选择性。The gas-sensitive material of Ag doped ZnFe_(2)O_(4)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 ZnFe_(2)O_(4),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 H_(2)S gas was better than that of pure ZnFe_(2)O_(4)nanoparticles(ZnFe_(2)O_(4) NPS)at room temperature at 2wt%SDBS,ultrasonic temperature at 35℃,ultrasonic time at 1.5hand 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 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]