▎ 摘　　要

NOVELTY - Synthesis of polymeric metal carbon-based filter or adsorbent material, comprises: (a) treating polyurethane foam with 1M nitric acid; (b) washing the chemically treated polyurethane foam with deionized water; (c) dissolving 0.2 M copper sulfate in deionized water to produce homogenous suspension; (d) adding ammonia solution to homogenous suspension of copper sulfate; (e) keeping homogenous suspension in water bath at 80-90 degrees C; (f) dipping treated polyurethane foam in homogenous suspension after 15 minutes; (g) drying at 80-100 degrees C for 24-36 hours, following by gentle washing; (h) drying at 80-100 degrees C for 24-36 hours; (i) dissolving chitosan granules in deionized water with continuous stirring and heating; (j) adding acetic acid to chitosan solution to produce homogenous solution of chitosan; (k) adding mechanically exfoliated graphene to homogenous solution of chitosan; and (l) continuously dipping the material, into the graphene-chitosan dispersion, and stirring. USE - The method is useful for synthesizing polymeric metal carbon-based filter or adsorbent material. ADVANTAGE - The method is simple and economically viable. DETAILED DESCRIPTION - Synthesis of a polymeric metal carbon-based filter or adsorbent material, comprises: (a) treating polyurethane foam with 1 M nitric acid to produce chemically treated polyurethane foam; (b) washing the chemically treated polyurethane foam with deionized water until the surface becomes neutral; (c) dissolving 0.2 M copper sulfate in 150-300 ml of deionized water to produce a homogenous suspension; (d) adding 15-30 ml of ammonia solution to the homogenous suspension of copper sulfate to maintain a pH of 10-11; (e) keeping the homogenous suspension in a water bath at 80-90 degrees C; (f) dipping the treated polyurethane foam in the homogenous suspension after 15 minutes; (g) drying at 80-100 degrees C for 24-36 hours, following by gentle washing; (h) drying at 80-100 degrees C for 24-36 hours; (i) dissolving 0.5-1.5 g chitosan granules in 120 ml of deionized water with continuous stirring and heating at 70-90 degrees C for 60-90 minutes; (j) adding 0.05% acetic acid to the chitosan solution to produce a homogenous solution of chitosan; (k) adding 0.1-0.5 g mechanically exfoliated graphene to the homogenous solution of chitosan, through continuous stirring at 300 rpm, for 2-3 hours at room temperature, to produce chitosan-graphene homogenous solution; and (l) continuously dipping the material obtained after the step (h), into the graphene-chitosan dispersion, and stirring the chitosan-graphene homogenous solution at 100-200 rpm for 2-4 hours to produce the adsorbent or filter material.