Evaluation of the antibacterial efficacy of bamboo charcoal/silver biological protective material
2009
Abstract Bamboo charcoal supporting silver (BC/Ag) was prepared by activation and chemical reduction. The BC/Ag composites were characterized by silver particle size and distribution, silver ion (Ag + ) release and antibacterial properties. Scanning and transmission electron microscopy (SEM and TEM) showed that the Ag particles were distributed uniformly on the BC matrix. The Ag particle size was found to be less than 150 nm based on TEM. The Ag content and surface morphology of the BC/Ag composites depended on the initial concentration of AgNO 3 , and the higher the Ag content, the smaller the specific surface area obtained on the BC. The antibacterial effects of the BC/Ag composite powders were assessed from the minimum inhibitory concentrations (MICs) and by the plate-counting method, and an excellent antibacterial performance was discovered.
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