无机盐添加剂对纳米WO3/rGO气敏性能的影响  

Effect of Inorganic Salt Additives on Gas-Sensing Properties of WO_3/rGO Nanomaterials

作　　者：桂阳海[1,2] 杨乐乐 王海燕[1] 李晓蒙 张宏忠[2] GUI Yang-hai;YANG Le-le;WANG Hai-yan;LI Xiao-meng;ZHANG Hong-zhong(Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China;Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业学院材料与化学工程学院,郑州450001 [2]郑州轻工业学院,河南省环境污染治理与生态修复协同创新中心,郑州450001

出　　处：《人工晶体学报》2018年第10期2115-2120,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(21371158);中国博士后基金(2015M580638);河南省高校创新人才项目(16HASTIT025)。

摘　　要：通过微波辅助气-液界面法制备了WO_3/rGO复合纳米材料,并以无机盐KCl、NaCl、MgCl_2、AlCl_3为添加剂,将无机盐离子(K^+、Na^+、Mg^(2+)、Al^(3+))成功地添加到WO_3/rGO纳米材料当中,无机盐离子有效地改变了WO_3/rGO纳米颗粒的尺寸,提高了WO_3/rGO纳米材料的气敏性能。含有MgCl2添加剂的WO_3/rGO的气敏性能最好,在180℃时其对5 ppm NOx的灵敏度值可达301. 1,响应/恢复时间仅为3 s/21 s,并且将WO_3/rGO的最佳工作温度由210℃降低到了180℃。WO3/rGO nanocomposite was prepared by microwave-assisted gas-liquid interfacial method.Inorganic salts(K+,Na+,Mg 2+,Al 3+)were successfully added with inorganic salts KCl,NaCl,MgCl 2,and AlCl 3 as additives.The size of WO 3/rGO nanoparticles was effectively changed by the action of inorganic salt ions,and the gas-sensing properties of WO 3/rGO nanomaterials were improved.The gas-sensing properties of WO 3/rGO containing MgCl 2 additive is the best.The response to 5 ppm NO x can reach 301.1 at 180℃.The response and recovery time is only 3 s and 21 s,and the best work temperature of WO 3/rGO decreased from 210℃to 180℃.

关 键 词：微波辅助气-液界面法 WO3/rGO复合纳米材料 无机盐添加剂 气敏性能 

分 类 号：O469[理学—凝聚态物理]