Abstract
In this study, polypyrrole/carbon black (PPy/C) filler with different amounts (5, 10, 15, and 20 wt%) was immobilized in a polymer blend consisting of chitosan/polyethylene glycol (CS/PEG) to produce conductive and dye adsorbent films. The study employed various distinctive techniques, including X-ray diffraction, Fourier transform infrared, and high-resolution scanning electron microscope, indicating that composites have high complexity and good interaction. Through the implementation of the UV-Vis technique, it has been observed that the reflectance of composites experiences enhancement with an increase in PPy/C content. The discussion covers the optical constants, such as the composites' refractive index and optical conductivity. Notably, the uniform dispersion of PPy/C has caused a significant rise in the electrical conductivity of the pristine blend from 1.182 × 10(-8) (Ω.cm)(-1) to 1.42 × 10(-5) (Ω.cm)(-1) when 15% PPy/C was added. This increased conductivity is attributable to correlated barrier-hopping mechanisms. The effects of increasing PPy/C quantity, contact time (0-260 min), initial MO dye concentration (20-120 mg/L), adsorbent film dosage (0.1, 0.25, 0.5, 0.75, and 1 g/L), and the initial pH (4-10) were examined. Incorporating PPy/C up to 10% improved the removal effectiveness of the composite film. The 10% PPy/C film exhibited the maximum removal effectiveness relative to other films. Langmuir showed better conventionality than the Freundlich isotherm model with R(2) of 0.999. The maximal adsorption capacity observed in monolayer adsorption was determined to be 217 mg/g. The adsorption of MO by the 10% PPy/C film is a chemisorption process, according to the parameters of the kinetic studies. (CS/PEG)- (PPy/C) films could be assigned to the synergistic dye adsorption effect of PPy/C filler and CS/PEG polymer-making material, ensuring excellent adsorption efficiency. Because of these appealing characteristics, PPy/C has the potential to be an environmentally friendly adsorbent in the treatment of dye wastewater.