Three kinds of silver colloids with colors of yellow,purple,and blue,respectively,were synthesized at room temperature with silver nitrate as raw material,sodium citrate as surface modifier,ascorbic acid or borohydride as reducing agent.Transmission electron microscopy (TEM) results demonstrated that there were irregular silver nanoparticles,small triangular silver nanoplates and nanoparticles,and large triangular silver nanoplates in the yellow,purple and blue silver colloids,respectively.In order to reveal the three kinds of silver colloids antibacterial substance,escherichia coli as antimicrobial object was used.The experimental results showed that three kinds of silver colloids had good antibacterial properties.Among them,the antibacterial property of silver nanoparticles was the best,followed by small silver nanoplates,and the antibacterial property of large silver nanoplates was the weakest.The antibacterial properties of silver nanostructures with different morphologies were related to the activity and specific surface area of silver nanostructures.
Mou Dengke, Zhou Huansen, Zhong Jianjun, Jia Xiaofei, Feng Minling, Zhao Yuzhen, Wang Yuehui
. Preparation and property of colorful nano-silver antibacterial agent[J]. New Chemical Materials, 2020
, 48(7)
: 93
-95
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.022
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