Abstract
AbstractAg/Fe bimetallic nanoparticles were synthesized by simple two-step method without nitrogen atmosphere. In the whole reaction process, polyvinyl pyrrolidone protected Fe nanoparticles and Ag/Fe bimetallic nanoparticles from oxidation. Moreover, the nanoparticles were characterized through high-resolution environment scanning electron microscope, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and energy dispersive spectrometer. The Fe nanoparticles and Ag/Fe bimetallic nanoparticles were used to remove Co(II) ions from aqueous solution. Experiments revealed that Ag/Fe bimetallic nanoparticles could quickly remove Co(II) ions from the aqueous solutions within 5 min, and the removal rate was up to 99%. Compared with Fe nanoparticles, as-prepared Ag/Fe bimetallic nanoparticles exhibit a higher adsorption capacity and faster reaction rate due to the numerous nanoscale Ag/Fe primary batteries, which indicates that the Ag/Fe bimetallic nanoparticles are highl...
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