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

doi:10.11896/j.issn.1005-023X.2018.04.006

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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.

Key words： small particle size NaA zeolite Ag-loaded zeolite solid phase ionic exchange method the load amount of silver antibacterial property sustained-release performance anti-tarnish property

Published: 25 February 2018 Online: 2018-02-25

CLC number:

TB321

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	Articles by authors
	LI Sen
	WANG Qingtao
	YU Huaqin
	XU Huijun
	DU Qingyang

Cite this article:

LI Sen,WANG Qingtao,YU Huaqin, et al. Preparation of Highly Active Ag-loaded Zeolite Antimicrobial by Solid Phase Ionic Exchange Method and Its Antibacterial Properties[J]. Materials Reports, 2018, 32(4): 539-544.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.006 OR https://www.mater-rep.com/EN/Y2018/V32/I4/539

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