Pt负载ZnO中空微米立方体的制备及其低温高灵敏NO_(2)气敏性能  

Preparation of Pt Loaded ZnO Hollow Micron Cubes and Their Low Temperature High Sensitivity NO_(2) Gas Sensing Performance

作　　者：李森林 张传涛 于灵敏[1] LI Senlin;ZHANG Chuantao;YU Lingmin(School of Materials and Chemical Enginering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学材料与化工学院,西安710021

出　　处：《西安工业大学学报》2025年第1期1-10,共10页Journal of Xi’an Technological University

基　　金：国家自然科学基金(62171359)。

摘　　要：针对目前NO_(2)气体传感器存在工作温度高和响应值低的问题,文中采用水热法设计合成了Pt纳米颗粒负载的ZnO微米立方体结构。气敏性能研究结果表明:Pt/ZnO的最佳工作温度从210℃降低至110℃,在最佳工作温度下,5 mol%Pt负载量对50 ppm的NO_(2)的响应值高达29,比纯ZnO提升了2.2倍,响应和恢复时间分别从61 s和86 s减少到15 s和36 s,且具有良好的重复性。The NO_(2) gas sensors available now still have the weaknesses of high operating temperature and low response value.In this study,the hydrothermal method was used to design and synthesize Pt nanoparticle loaded ZnO microcubic structures.The results of sensitivity performance tests show that the optimal operating temperature of Pt/ZnO is reduced from 210℃to 110℃,at which the sensor loaded with 5 mol%Pt exhibits a response value of 29 to 50 ppm NO_(2),three times higher than that of pure ZnO.The response and recovery times are reduced from 61 s and 86 s to 15 s and 36 s,respectively,with good repeatability.

关 键 词：Pt纳米颗粒 ZnO中空微米立方体 水热法 NO_(2)气敏性能 

分 类 号：TB3[一般工业技术—材料科学与工程]