Synthesis of H2SO4 doped polyaniline film by potentiometric method

Abstract

H 2 SO 4 doped polyaniline films were synthesized in aqueous acidic media. The polyaniline film deposited on platinum electrode exhibits highest conductivity. The conductivity of each H 2 SO 4 doped polyaniline sample was determined by the four-probe technique. The current-voltage curve exhibits that polyaniline sample has an ohmic behaviour. Experiments were conducted to establish the conductivity of the sample from room temperature to 110°°C. The current was set constant. It has been observed that at lower current as well as higher current conductivity of the polyaniline sample is due to the electrons transferred to the conduction band. It is observed that the concentration ratio of 0⋅ ⋅2 : 1 of aniline and H 2 SO 4 for synthesis of PANI film on platinum electrode shows good conductivity.

Concentric glucose/O2 biofuel cell

“…4 shows the influence of chemical reticulation of the enzymes in the polymer on the electrochemical activity of the bioelectrodes. Cross-linking of the enzymes with bifunctionnal group such as glutaraldehyde has been widely applied to prevent enzyme leaching and improve enzyme stability [42,43].…”

Size variation of polyaniline nanoparticles dispersed in polyvinyl alcohol matrix

“…Since its discovery, polyaniline (PANI) has attracted considerable attention because of its unique electrical and optical properties as well as its ease of preparation and most excellent environment stability among many other conducting polymers (Pei et al 1991;Heeger 2001;Pinto et al 2003;Raghavendra et al 2003;Gaikwad et al 2006). It has numerous applications in electronics, energy storage, anticorrosion coatings, catalyst, chemical sensing etc (Xia and Qi 2001).…”

Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline

“…4. The green coloured polyaniline films showed an absorption peak at 480 nm due to -* transition within the benzenoid segment and a broad peak in the visible region at 740 nm ascribed to exciton formation in the quinoid rings [42,43]. The fact that there was no shift in the wavelength of PANI at 480 nm in the nanocomposite suggests that the chemical structure of PANI was not altered in the modified electrode preparation.…”