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Zn杂化NaA分子筛的合成及其抗菌性能
作者:于华芹1  韬1  强1  森1 王清涛1 徐会君2 杜庆洋1 
单位:(1. 山东理工大学材料科学与工程学院 山东 淄博 255049 2. 山东理工大学化学化工学院 山东 淄博 255049) 
关键词:Zn杂化NaA分子筛 单模微波合成法 载银分子筛 抗菌活性 
分类号:TB321
出版年,卷(期):页码:2019,47(7):0-0
DOI:
摘要:

 以硅溶胶、偏铝酸钠、硝酸锌为原料,采用单模微波合成法制备Zn杂化NaA分子筛。对制备的Zn杂化NaA分子筛样品进行了表征;以Zn杂化NaA分子筛为载体制备载银分子筛,研究其抗菌性能。结果表明:Zn同晶取代了部分Al进入分子筛骨架得到Zn杂化NaA分子筛;其载银量为(43.26±0.48)%,对大肠杆菌的最小抑菌浓度(MIC)为7.92×10–6,具有良好的缓释性和抗变色性。Zn杂化载银分子筛的抗菌方式是分子筛负载Ag+的溶出接触式杀菌和Ag+催化产生•OH氧化还原杀菌的共同作用。

 Zinc-substituted NaA zeolite was prepared by a single-mode focused microwave synthesis method using sodium silicate, sodium metaaluminate and zinc nitrate as raw materials. The zinc-substituted NaA zeolite sample was characterized. The Ag-loaded zeolite was prepared with a carrier of zinc-substituted NaA zeolite, and the antibacterial properties were investigated. The results show that parts of Al3+ in the zeolite framework are isomorphous substituted by Zn2+ to obtain zinc-substituted NaA zeolite, and the amount of silver load in the Ag-loaded zeolite prepared with the carrier of zinc-substituted NaA zeolite is (43.26±0.48)%. The minimum inhibitory concentration (MIC) value to the Escherichia coli is 7.92×10–6, and the Ag-loaded zeolite has a good sustained-release performance and an anti-tarnish property. The antibacterial mode of Zn hybrid Ag-loaded zeolite is the comprehensive effect of contacting sterilization by Ag+ from zeolite and the redox sterilization of •OH produced by the catalysis of Ag+.

 
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