Doping Effect on Polyaniline|graphite Composite as Formaldehyde Gas Sensor. (September 2019)

• Record Type: Journal Article
• Authors: Akbar, S A
• Is Part Of: Journal of physics. Volume 1232(2019)
• Publication Date: 2019-09
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1232/1/012010
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Here, we report the study about doping effect on composite Polyaniline (PANI) and graphite as the application as the formaldehyde gas sensor. The high conductivity of doping devices using HClO4 if compared to the others. As a more expanded polymeric chain should expose more sites of adsorption, it is acceptable that the expectation of the sensor response will follow the same behavior as the conductivity. The composite doped using all kind of acid presents the band at 1140 cm −1 . However the band between 1050 – 1140 cm −1 on HClO4 and H2 SO4 doping appears the peak that assigned to υ (S=0) and υ (Cl-O), then υ (N=0) stretching also appears on the band at 1380 cm −1 . The present of H2 SO4, HQO4, and HNO3 doping on FTIR are accepted that they have a multiplying effect on the change of the PANI polymeric conformation, from a compact coil to an expanded coil form, and consequently, the conductivity is increased.