Polyaniline/zinc oxide nanocomposite as room‐temperature sensing layer for methane

Abstract

Methane detection in ambient condition has become essential as it is being increasingly used as compressed natural gas in many industrial processes and for domestic and transportation purposes. Hence, in this work, we report a room‐temperature methane sensor based on polyaniline/zinc oxide (PANI/ZnO) nanocomposite. The PANI/ZnO nanocomposite was prepared by chemical polymerization of aniline in the presence of ZnO nanoparticles. Electron microscopy results revealed the successful formation of nanocomposites with rod‐like ZnO nanoparticles embedded into the network of nanofibrillar PANI matrix. The PANI/ZnO nanocomposites exhibited a high response to methane at room temperature within a short response time of 20 s for a methane concentration (500 ppm) much lower than its flammability limit. Moreover, the humidity dependence of the sensor response was found to be very low. POLYM. ENG. SCI., 58:1438–1445, 2018. © 2017 Society of Plastics Engineers

Electrochemical sensor based on screen printed carbon electrode–zinc oxide nano particles/molecularly imprinted-polymer (SPCE–ZnONPs/MIP) for detection of sodium dodecyl sulfate (SDS)

“…More importantly, ZnONPs have high electrocatalytic activity, accelerating the process evaluation of various analytes. [18][19][20] Although the ZnO particles have good stability, however, the utilization of ZnONPs is rarely used individually on a modied sensor because of instability issues such as aggregation during the preparation step. 21 Here, several investigators have tried using ZnONPs in combination with other materials such as graphene oxide and multi-walled carbon nanotube, then enhancing the function of the sensors.…”

Sintesis dan Karakterisasi Komposit PANi/ZnO Sebagai Sensor Gas Metanol

“…Senyawa oksida logam memiliki kompatibilitas yang lebih baik dibanding senyawa lainnya jika diaplikasikan sebagai sensor gas. Hal ini dikarenakan senyawa oksida logam sangat sensitif terhadap gas dan merupakan perangkat yang sederhana, portabel, dan hemat biaya (Sen et al, 2018). Selain itu, oksida logam dapat diintegrasikan dengan sangat baik menggunakan teknologi baru seperti Internet of Things (IoT) untuk pemantauan kebocoran metanol secara mobile (Paulraj et al, 2017) sehingga kecelakaan besar dapat dihindari dalam waktu singkat Di antara oksida logam, ZnO telah menjadi salah satu pesaing terkuat sebagai bahan dasar sensor gas.…”

Graphene oxide‐wrapped polyaniline nanorods for supercapacitor applications

“…In the recent era, 1D nanostructures of intrinsically conducting polymers (ICPs) have attracted scientists owing to their higher surface area, high tendency to form anisotropic structure, metal-like conductivity, highly conjugated molecular structure and promising application in nanodevices [17,18]. Among the different ICP, 1D polyaniline (PANI) is highly preferred due to its ease of synthesis with variation of pH [19], reverse doping-dedoping character and good environmental stability [20][21][22][23], making it suitable for applications in chemical sensors, biosensors, light emitting diodes, supercapacitors, electronic devices [23][24][25][26][27]. 1D PANI can be prepared using different proton donor such as camphor sulfonic acid, oxalic acid, hydrochloric acid, and so on to produce variable physical and chemical characteristics of PANI [19,28].…”