Pt掺杂ZnFe2O4纳米颗粒的制备及气敏性能研究  

Synthesis and Gas Sensing Properties of Pt Doped ZnFeO Nanoparticles

作　　者：燕音 帕提曼·尼扎木丁[2] 热娜古丽·阿不都热合曼 阿布力孜·伊米提[2] YAN Yin;PATIMA Nizamidin;RENAGUL Abdurahman;ABLIZ Yimit(College of Chemistry and Environmental Science,Kashgar University,Kashgar Xinjiang 844006,China;College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi Xinjiang 830046,China)

机构地区：[1]喀什大学化学与环境科学学院,新疆喀什844006 [2]新疆大学化学化工学院,新疆乌鲁木齐830046

出　　处：《传感技术学报》2020年第8期1110-1116,共7页Chinese Journal of Sensors and Actuators

基　　金：新疆维吾尔自治区高校科研计划项目(XJEDU2018Y036);喀什大学高层次人才科研启动经费项目(022018107)。

摘　　要：本文通过液相法合成了Pt掺杂ZnFe2O4纳米颗粒,利用X射线衍射仪(XRD)、场发射扫描电镜(FESEM)、X射线光电子能谱(XPS)等手段对材料结构、形貌等进行表征,并将其制成厚膜型气敏元件,探讨烧结温度、掺杂量及工作温度对其气敏性能的影响。结果表明:Pt掺杂未改变ZnFe2O4的尖晶石结构;600℃烧结,2%Pt掺杂ZnFe2O4气敏元件在150℃的工作温度下对1×10^-4(V/V0)的H2S气体灵敏度达144.11;在此工作温度下对1×10^-6(V/V0)~1×10^-3(V/V0)H2S气体均有较好的响应-恢复特性。In this present paper,Pt-doped ZnFe2O4 nanoparticles,the sensitive material,were fabricated by adopting the liquid phase method. Some tools,including X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),and X-ray photoelectron spectroscopy(XPS),were applied to carry out the characterization of the structure and morphology of the materials. Afterwards,the Pt-doped ZnFe2O4 nanoparticles were fixed to alumina ceramic tube as a thick-film electrochemical gas sensor. Subsequently,the effects of sintering temperature,doping amount and working temperature on gas-sensing properties were discussed. The results demonstrated that the Pt doping did not change the spinel structure of ZnFe2O4. A total of 2% of Pt-doped ZnFe2O4 nanoparticles gas-sensitivity,sintered at 600 ℃,was the best,and its sensitivity can reach 144.11 to 1×10^-4(V/V0)H2S gas at the working temperature of 150 ℃. Under the optimum working temperature,it exhibited excellent response and recovery features for the range of 1×10^-6(V/V0)to 1×10^-3(V/V0)H2S gas.

关 键 词：Pt掺杂ZnFe2O4 纳米颗粒 H2S气体 气敏性能 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]