Abstract
The discharge of wastewater containing toxic and radioactive iodine into water leads to a negative impact on aquatic life, animals and humans. In this work, we synthesized Polythiophene (PTh) and Polythiophene/α-MnO2 nanocomposite (PTh/α-MnO2) by the chemical route and used them to remove iodine from aqueous solution. The surface morphology showed presence of rod-shaped α-MnO2 with a size of 25–200 nm embedded in polythiophene. The interplaner distance was found to be 0.7 nm corresponds to the (211) plane. Specific surface area of PTh and PTh/α-MnO2 nanocomposite was found to be 22.15 m2/g and 51.98 m2/g respectively and equilibrium I2 adsorption capacity was found to be (qe) 266.08 mg/g and 304.21 mg/g respectively. Langmuir isotherm (R2 = 0.99) fitted well compared to Freundlich isotherm (R2 = 0.84) indicates monolayer adsorption of iodine onto adsorbent surface. The adsorbent is stable, recyclable, high adsorption capacity, and environment friendly so it can be used at large scale for treatment of I2 contaminated water.
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