Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland.
Nanotechnology. 2021 Jan 8;32(2):025715. doi: 10.1088/1361-6528/abbcaa.
The nanocomposites of nAg-CaCO and CaCO-nAg with different mass content of silver nanoparticles were obtained in a two-stage continuous microwave process. The nanocomposites were characterized by XRD, TEM, UV-vis, and FTIR spectroscopy. The effects of microwave radiation, silver nanoparticles content in the composite and the molar ratio of tannic acid to silver on the size of salt crystallites were studied. The effectiveness of combining silver nanoparticles with CaCO was confirmed to exceed 99%. Depending on the input parameters applied, the size of salt crystals in nAg/CaCO nanocomposites ranged from 25 to 45 nm, while the size of salt crystals in CaCO/nAg nanocomposites ranged from 26 to 41 nm. In addition, some of the compositions were tested for their antimicrobial activity on selected yeast and bacterial microorganisms. The prepared materials present a biocidal effect, which makes them suitable for use in antimicrobial preparations.
采用两段式连续微波法制备了不同纳米银颗粒质量含量的 nAg-CaCO 和 CaCO-nAg 纳米复合材料。通过 XRD、TEM、UV-vis 和 FTIR 光谱对纳米复合材料进行了表征。研究了微波辐射、复合材料中纳米银颗粒的含量以及没食子酸与银的摩尔比对盐晶粒度的影响。证实了将纳米银与 CaCO 结合的有效性超过 99%。根据所采用的输入参数，nAg/CaCO 纳米复合材料中盐晶体的尺寸范围为 25 至 45nm，而 CaCO/nAg 纳米复合材料中盐晶体的尺寸范围为 26 至 41nm。此外，还对一些组合物对所选酵母和细菌微生物的抗菌活性进行了测试。所制备的材料具有杀菌作用，使其适用于抗菌制剂。
