纳米复合材料
材料科学
介孔二氧化硅
纳米载体
纳米颗粒
介孔材料
纳米技术
锌
银纳米粒子
化学工程
抗菌活性
粒径
纳米-
纳米材料
有机化学
复合材料
冶金
化学
催化作用
细菌
生物
工程类
遗传学
作者
Guofeng Su,Ximing Zhong,Songfa Qiu,Fan Jiang,Hongjun Zhou,Xinhua Zhou
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2022-01-18
卷期号:33 (15): 155702-155702
被引量:9
标识
DOI:10.1088/1361-6528/ac467a
摘要
In this work, a novel antibacterial nanocomposite system was developed using mesoporous silica (MSN) as an effective nanocarrier, and the resultant nanocomposites demonstrated remarkable antibacterial performance due to the synergistic effect among nano zinc oxides, silver nanoparticles, and polydopamine (PDA). The successful synthesis of MSN/ZnO@PDA/Ag nanocomposites was confirmed. The physicochemical properties and the morphologies of these nanocomposites were investigated. It was found that the particle size increased along with the evolution of these nanocomposites. Besides, nano zinc oxides were formed in the nanochannels of mesoporous silica with a particle size about 2 nm, and that of silver nanoparticle was less than 50 nm. In addition, the results revealed that the presence of mesoporous silica could effectively prevent the formation of large-size silver nanoparticles and facilitate their well dispersion. Due to the synergistic effect among nano zinc oxides, silver nanoparticles, and polydopamine, these nanocomposites exhibited remarkable antibacterial performance even at a low concentration of 313 ppm, and the antibacterial mechanism was also elucidated. Therefore, this work provides a facile and controllable approach to preparing synergistically antibacterial nanocomposites, and the remarkable antibacterial performance make them suitable for practical applications.
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