Preparation of Highly Active Ag-loaded Zeolite Antimicrobial by Solid Phase Ionic Exchange Method and Its Antibacterial Properties
LI Sen1, WANG Qingtao1, YU Huaqin1, XU Huijun2, DU Qingyang1
1 School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000; 2 School of Chemical Engineering, Shandong University of Technology, Zibo 255000
Abstract: The Ag-loaded antibacterial zeolite was prepared by solid phase ionic exchange method with small particle size of NaA zeolite as carrier, NH4NO3 and AgNO3 as raw material. The influence of the AgNO3 amount, reaction temperature, and reaction time on the amount of silver load in the zeolite were investigated. The phase composition and morphology of Ag-loaded zeolite were characterized. The antibacterial property, sustained-release performance, and anti-tarnish property of Ag-loaded zeolite were studied. The results showed that the Ag-loaded zeolite synthesized under optimum conditions (i.e., the molar ratio n(NH4A)∶n(AgNO3)=1∶2, reaction temperature was 400 ℃, reaction duration was 4 h) had the minimum inhibitory concentration (MIC) for escherichia coli (10.42×10-6) with the loaded amount of silver of (41.35±0.42)% (mass fraction). The sterilizing rate of Ag-loa-ded zeolite to escherichia coli was (98.36±0.28)%, and the diameter of inhibition zone was 15.8 mm. When applying the Ag-loaded zeolite to staphylococcus aureus, the MIC was 12.50×10-6, the sterilizing rate was (97.43±0.19)%, and diameter of inhibition zone was 13.6 mm. Meanwhile, the Ag-loaded zeolite had good sustained-release performance and anti-tarnish property.
李森, 王清涛, 于华芹, 徐会君, 杜庆洋. 固相离子交换法制备高效载银分子筛抗菌剂及其抗菌性能[J]. 《材料导报》期刊社, 2018, 32(4): 539-544.
LI Sen, WANG Qingtao, YU Huaqin, XU Huijun, DU Qingyang. Preparation of Highly Active Ag-loaded Zeolite Antimicrobial by Solid Phase Ionic Exchange Method and Its Antibacterial Properties. Materials Reports, 2018, 32(4): 539-544.
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2018, Vol. 32 
