Efficient Adsorptive of Carbofuran Via Tailored Porous Polyacrylonitrile Film Incorporated Ti-MIL Coordination Polymer

Abstract

Carbofuran is largely applied insecticide which resulted in its wide spreading in ground/surface water and food products and consequently investigation of efficient techniques for removal of carbofuran is extensively considered. Herein, facile approach for removal of carbofuran was developed via exploitation of highly adsorptive porous film based on polyacrylonitrile (PAN) and NH2-MIL-Ti as a coordination polymer. NH2-MIL-Ti@P-PAN film was prepared by immobilization of NH2-MIL-Ti within the pre-prepared porous (P-PAN) film. The pore diameter of PAN film was estimated to be 8.5 – 51.2 µm. The removal of carbofuran from the porous film was systematically studied and fitted to both pseudo 2nd ordered and Langmuir models. Results showed that Langmuir maximum removal of carbofuran was largely enhanced from 292.2 mg/g for P-PAN to 489.5 – 690.1 mg/g for NH2-MIL-Ti@P-PAN. Thus, by increasing the amount of immobilized NH2-MIL-Ti@P-PAN in the film, the adsorption capacity of carbofuran was markedly improved, reaching a 2.4 times higher when 30% NH2-MIL-Ti is immobilized. Importantly, after six reusing times, the removal of carbofuran by 30% NH2-MIL-Ti@P-PAN film was decreased by only 12.5%. The overall results attest that the fabricated NH2-MIL-Ti@P-PAN film could be efficiently used for trace removal of various insecticides and other environmental applications.