Synthesis and sensing applications of polyaniline nanocomposites: a review

Abstract

A comprehensive review on the synthesis of PANI nanocomposites and their applications as gas sensors and biosensors has been presented.

Biosynthesis of Copper Nanoparticles Supported on Zeolite Y and its Application in Catalytic C‐N Cross Coupling Reactions between Amines and Aryl halides

“…The mechanism of reduction of copper salts with ascorbic acid was well established and discussed in the literature . An efficient loading of copper nanoparticles and retain its high surface area, there is need to immobilize in a confined template that can be utilized for various applications of the Cu nanoparticles (CuNPs) . Many number of solid supports are reported in the literature to produce nanocomposites.…”

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].…”

Gold nanoparticle/nickel oxide/poly(pyrrole-N-propionic acid) hybrid multilayer film: Electrochemical study and its application in biosensing

“…The modified electrodes were characterized on basic electrochemical redox probe of potassium ferrocyanide-ferricyanide. The CV scans of the bare ITO, ITO/GNPs, ITO/GNPs/NiO, and ITO/poly(PPA) in a redox probe of 10 mM [Fe(CN) 6 ] 3-/4-containing 0.1 M KCl were recorded in the range of -0.2 to +0.6 V and they are presented in Figure 3. ITO/GNPs/ poly(PPA) and ITO/GNPs/NiO/poly(PPA) are shown in the inset of Figure 3.…”

“…The stepwise assembly in the fabrication process was also investigated using EIS. Figure 4 show the EIS of different modified electrodes in 10 mM Fe(CN) 6 3-/4-as a redox probe containing 0.1 M KCl in the frequency range 10 5 -0.1 Hz. Figure 4 shows a well-defined semicircle curve, indicating the charge transfer process was obtained for both bare and modified electrodes.…”

“…To investigate the dopamine (DP) sensing characteristics of the ITO/GNPs/NiO/poly(PPA)-Ty, EIS was performed in the frequency range 100 mHz to 10 5 Hz. The optimal working potential was set to +0.200 V. Dopamine (from 80 µM to 1.2 mM) was injected into the 0.1 M PBS (pH = 7.4) containing 2.5 mM [Fe(CN) 6 3-/4-] redox probe In order to represent the variation of the impedance with variation of dopamine concentrations, the Nyquist and Bode Magnitude plots of the ITO/GNPs/NiO/poly(PPA)-Ty after exposure to different concentration of dopamine have been provided in Figure 11. As shown in Figure 11a, The Nyquist plot presents a semicircle region at the high frequency region due to the electron transfer process, followed by a straight line due to diffusion transfer limited process.…”