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Mild Synthesis of Copper Nanoparticles with Enhanced Oxidative Stability and Their Application in Antibacterial Films
journal contribution
posted on 2018-11-13, 00:00 authored by Liangzhen Tang, Li Zhu, Fu Tang, Chuang Yao, Jie Wang, Lidong LiCopper
nanoparticles possess unique physical and chemical properties; however,
their application is often restricted, owing to their tendency to
oxidize. In this work, we prepared copper nanoparticles with enhanced
oxidative stability via a simple and low-cost method, where a modified
starch was used as an environmentally friendly reducing agent and
biocompatible polyethylenimine was used as a stabilizer. The prepared
copper nanoparticles could be stored in air for at least 6 months
without any oxidation in a dried state. Interestingly, our synthesis
could even be performed at room temperature with a longer reaction
time. We used various characterization methods to study the reaction
mechanism. The prepared copper nanoparticles were further uniformly
doped into an agar film, and this composite showed excellent bacterial
killing efficiency, owing to the antibacterial properties of the copper
nanoparticles. Our composite film shows potential for various clinical
applications, such as wound dressing materials.