NiWO_(4)纳米材料的湿法合成及新型气敏传感器性能研究  

Wet Synthesis of NiWO_(4) Nanomaterial and Study on Performance of New Gas Sensor

作　　者：杨敏 朱瑞林[1,2] 黄秋萍 张坪 姜涛 邓国伟 YANG Min;Zhu Rui-Lin;Huang Qiu-Ping;ZHANG Ping;JIANG Tao;DENG Guo-Wei(Chemistry and Life Science,Chengdu Normal University,Chengdu 611130,China;Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules,Chengdu Normal University,Chengdu 611130,China)

机构地区：[1]成都师范学院化学与生命科学学院,四川成都611130 [2]成都师范学院功能分子结构优化与应用四川省高校重点实验室,四川成都611130

出　　处：《合成化学》2021年第10期844-849,共6页Chinese Journal of Synthetic Chemistry

基　　金：四川省应用基础研究项目(2020YJ0421);成都师范学院科研创新团队项目(CSCXTD2020A05);大学生创新训练项目(S202014389178)。

摘　　要：采用湿法合成了低温(60℃)生长的三维花状NiWO_(4)材料,并制备了NiWO_(4)氨气传感器。采用X-射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(IR)和拉曼光谱(Raman)等对NiWO_(4)纳米材料的物相结构、微观形貌和比表面积进行了分析;研究了传感器对氨气、二氧化氮、二氧化碳、二氧化硫、一氧化碳和甲烷等气体的传感性能。结果表明:NiWO_(4)对氨气显示了最佳气敏响应。在50 ppm氨气下,NiWO_(4)氨气传感器显示出快速响应(47 s)和快速恢复(143 s)。此外,还测试了材料在22.5%~97.3%的相对湿度(RH)内的响应恢复效应。结果表明:NiWO_(4)材料对于湿度的响应较为迅速(37 s),具备制备高性能湿敏传感器的潜力。The three-dimensional flower-like NiWO_(4)grown at low temperature(60℃)was successfully prepared by wet chemical method.XRD,SEM,IR and Raman spectroscopy were used to analyze the phase structure,morphology and specific surface area of NiWO_(4)nanomaterials.The sensing performance of the sensor for ammonia(NH_(3)),nitrogen dioxide(NO_(2)),carbon dioxide(CO_(2)),sulfur dioxide(SO_(2)),carbon monoxide(CO),methane(CH_(4))was tested.The results show that NiWO_(4)has the best gas sensitive response to NH_(3).The NH_(3)sensor also has a fast response/recovery rate of 47 s and 143 s at 50 ppm ammonia test conditions,and the material has good moisture resistance.In addition,the material responds/recovery time in the relative humidity(RH)range of 22.5%~97.3%were tested at room temperature.The experimental results show that NiWO_(4)has a rapid response(37 s)to humidity,and has the potential to prepare high-performance humidity sensor.

关 键 词：钨酸镍 湿法合成 气敏 氨气检测 纳米材料 响应恢复 湿敏 

分 类 号：O6[理学—化学]