Flexible fabric gas sensors based on PANI/WO3 p−n heterojunction for high performance NH3 detection at room temperature

作     者：Meng He Lili Xie Guifang Luo Zhanhong Li James Wright Zhigang Zhu 贺蒙;解丽丽;罗贵芳;李崭虹;James Wright;朱志刚

作者机构：School of Medical Instrument and Food EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China School of Environmental and Materials EngineeringShanghai Polytechnic University2360 Jinhai RoadShanghai 201209China Department of Electronic EngineeringSchool of EngineeringTechnological University DublinTallaghtDublin 24Ireland 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2020年第63卷第10期

页      面：2028-2039页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 

基　　金：This work was supported by the National Natural Science Foundation of China(61471233) 

主　　题：gas sensor PANI/WO3 cotton thread p-n heterojunction NH3 detection 

摘      要：A PANI/WO3@cotton thread-based flexible sensor that is capable of detecting NH3 at room temperature is developed here.A layer of WO3 with PANI nanoparticles can be deposited by in-situ *** morphology and structure of the specimens were investigated by utilizing TEM,SEM,XRD and *** sensing performance of the PANI/WO3@cotton sensors with different WO3 molar ratios to NH3 at room temperature was *** results show that the optimal sensor(10 mol%WO3)has a response of 6.0 to 100 ppm NH3,which is significantly higher than that of the sensors based on pristine PANI and other *** PANI/WO3@cotton sensor also displays excellent selectivity,gas response,and flexibility even at room *** unique fiber structure,p-n heterojunction,and the increased protonation of PANI in the composites contribute to the enhanced sensing property.