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A novel magnetic weak acid resin NDMC-1 was prepared in the presence of methyl acrylate(MA),divinylbenzene(DVB) and titanate coupling agent(TCA) coated 7-Fe_2O_3 particles.To evaluate the adsorption of Cu~(2+) on the obtained resin NDMC-1,another two magnetic resins NDMC-0(the precursor of NDMC-1 without hydrolyzation) and NDMO-l(the synthesized weak acid resin using oleic acid coatedγ-Fe_2O_3) were chosen for comparison.The results showed that the carboxyl groups were formed after hydrolyzation,and NDMC-1 exhibited a greater adsorption capacity to Cu~(2+).The desorption experiment demonstrated that the desorption ratio at pH 2(95.14%) was greatly higher than pH 3(25.97%).Moreover,the magnetic resin NDMC-1 was proved to be stable at pH 2,extending the application of magnetic materials which were always considered to be acid-nonresistant.
A novel magnetic weak acid resin NDMC-1 was prepared in the presence of methyl acrylate (MA), divinylbenzene (DVB) and titanate coupling agent (TCA) coated 7-Fe_2O_3 particles.To evaluate the adsorption of Cu 2+ the resulting resin NDMC-1, another two magnetic resins NDMC-0 (the precursor of NDMC-1 without hydrolyzation) and NDMO-l (the synthesized weak acid resin using oleic acid coated γ-Fe_2O_3) were chosen for comparison. The results showed that the desorption experiment of the desorption ratio at pH 2 (95.14%) was greatly higher than pH 3 (25.97%) . Moreover, the magnetic resin NDMC-1 was proved to be stable at pH 2, extending the application of magnetic materials which were always considered to be acid-nonresistant.