Year: 2023 | Month: December | Volume: 10 | Issue: 12 | Pages: 181-187
DOI: https://doi.org/10.52403/ijrr.20231223
HCL Dopant Effect on Absorbance Pattern Polyaniline Nanofibers as an Active Material in Gas Sensors
Ngurah Ayu Ketut Umiati1, Muchammad Azam1, Isnaen Gunadi1
1Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Semarang Indonesia
Corresponding Author: Ngurah Ayu Ketut Umiati
ABSTRACT
Observations of influence dopants on absorbance polyaniline nanofiber as an active material for gas sensors have been made. The polyaniline nanofiber used is result of interfacial polymerization an organic phase (toluene-aniline) with a water phase (aguadest-HCl-ammonium peroxydisulfate). The synthesis was carried out with molar variations of the HCl dopant from 0.6 to 3 M. From the UV-Vis results it can be seen that the absorbance increases as the dopant concentration increases. The higher the absorbance, it is hoped that the sample will also have high sensitivity to gas. Variations in the morphology of the resulting film are also influenced by the presence of dopants. The greater the molar concentration, the smaller and more regular the fiber size will be.
Keywords: polyaniline, nanofiber, absorbance, morphology
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