Abstract
An efficient strategy was proposed to fabricate magnetic N-doped mesoporous carbons (Fe0/NMC) via one-pot process. This one-pot strategy involved the synthesis of N-containing porous polymers using amphiphilic triblock copolymer (F127) through self-assembly of melamine formaldehyde resin, and the formation and entrapment of Fe0 nanoparticles by an in-situ carbothermal reduction approach. The surface morphology and the main chemical groups of the developed Fe0/NMC were characterized by various analytical methods such as XRD, FTIR, TGA-DTA, BET, TEM and VSM. Fe0/NMC exhibited a mesoporous structure and Fe0 nanoparticles were dispersed homogeneously on Fe0/NMC, with a saturation magnetization of 134.6 emu/g. As an adsorbent, Fe0/NMC showed an excellent adsorption capacity for Ag (I), reaching 335 mg/g. The adsorption process was consistent with the quasi-secondary kinetic model and Freundlich isothermal adsorption model, which indicated that the adsorption process was multilayer adsorption and the adsorbed element Ag was present on Fe0/NMC in the form of Ag(I) as well as chelates and Ag monomers. It could be believed that Fe0/NMC was a viable adsorption material for Ag(I) and had full-scale applications.
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