Silver nanoparticle (AgNP) incorporated chitosan-Polyvinyl alcohol (Ch/PVA) hydrogel nanocomposite was fabricated by repeated freeze-thaw treatment using glutaraldehyde as crosslinker for removal of herbicide butachlor from aqueous solution. Ch/PVA hydrogel provided a matrix for in-situ immobilization of AgNPs and were characterized by various physicochemical techniques. AgNPs of size 5-20 nm possessed crystalline structure, led to increase in thermal stability and surface area after incorporation into Ch/PVA hydrogel. Ch/PVA hydrogel nanocomposite showed maximum adsorption of butachlor (86.55 %) at 30 °C and pH 3.0, while Ch/PVA-Ag showed a slight increase in adsorption of butachlor following pseudo-second order kinetics. Langmuir and Freundlich models with different error functions (R, R, RSME, χ and RSS), confirmed monolayer adsorption of butachlor.
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Silver nanoparticle (AgNP) incorporated chitosan-Polyvinyl alcohol (Ch/PVA) hydrogel nanocomposite was fabricated by repeated freeze-thaw treatment using glutaraldehyde as crosslinker for removal of herbicide butachlor from aqueous solution. Ch/PVA hydrogel provided a matrix for in-situ immobilization of AgNPs and were characterized by various physicochemical techniques. AgNPs of size 5-20 nm possessed crystalline structure, led to increase in thermal stability and surface area after incorporation into Ch/PVA hydrogel.
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