Tên bài báo:Preparation and properties of silver nanoparticles loaded in activated carbon for biological and environmental applications
Silver nanoparticles colloid has been prepared by a modified sonoelectrodeposition technique in which a silver plate was used as the source of silver ions. This technique allows producing Ag nanoparticles with the size of 4–30 nm dispersed in a non-toxic solution. The Ag nanoparticles were loaded in a high surface activated carbon produced from coconut husk, a popular agricultural waste in Vietnam by thermal activation. The surface area of the best activated carbon is 890 m2/g. The presence of Ag nanoparticles does not change significantly properties of the activated carbon in terms of morphology and methylene blue adsorption ability. The Ag nanoparticle-loaded activated carbon shows a good antibacterial activity against Escherichia coli with very low minimal inhibitory concentration of 16 μg/ml and strong As(V) adsorption. The materials are potential for prevention and treatment of microbial infection and contamination for environmental applications. Highlights • A modification to the conventional sonoelectrodeposition technique in which a silver plate replaced for silver salts avoided unexpected ions from the salts. • By choosing suitable chemicals for electrodeposition, the final product consisted of silver nanoparticles in a non-toxic solution. • Silver nanoparticles were loaded on activated carbon which showed good antibacterial properties.
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