Cheng Fei, Betts Jonathan W, Kelly Stephen M, Hector Andrew L
Department of Chemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
Department of Chemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
Mater Sci Eng C Mater Biol Appl. 2015 Jan;46:530-7. doi: 10.1016/j.msec.2014.10.041. Epub 2014 Oct 23.
A simple, environmentally friendly and cost-effective method has been developed to prepare a range of aqueous silver colloidal solutions, using ascorbic acid as a reducing agent, water-soluble starch as a combined crystallising, stabilising and solubilising agent, and water as the solvent. The diameter of silver nanoplatelets increases with higher concentrations of AgNO3 and starch. The silver nanoparticles are also more uniform in shape the greater the diameter of the nanoparticles. Colloidal solutions with a very high concentration of large, flat, hexagonal silver nanoplatelets (~230 nm in breadth) have been used to deposit and fix an antibacterial coating of these large starch-stabilised silver nanoplates on commercial cotton fibres, using a simple dip-coating process using water as the solvent, in order to study the dependence of the antibacterial properties of these nanoplatelets on their size.
已开发出一种简单、环保且经济高效的方法来制备一系列水性银胶体溶液，该方法使用抗坏血酸作为还原剂，水溶性淀粉作为结晶、稳定和增溶的复合剂，水作为溶剂。随着硝酸银和淀粉浓度的增加，银纳米片的直径增大。纳米颗粒的直径越大，银纳米颗粒的形状也越均匀。使用浓度非常高的大尺寸、扁平状、六边形银纳米片（宽度约为230纳米）的胶体溶液，通过以水为溶剂的简单浸涂工艺，将这些由淀粉稳定的大尺寸银纳米片的抗菌涂层沉积并固定在商用棉纤维上，以研究这些纳米片的抗菌性能对其尺寸的依赖性。
