原位合成高效抗菌活性凹凸棒石负载氯化银纳米粒子复合材料  

In-situ Synthesis of Silver Chloride Nanoparticle-Loaded Attapulgite Composites with Efficient Antimicrobial Activity

作　　者：张可风 李艳 乜开龙[1,2] 党诗源 药秉学 滑雪 田光燕 Zhang Kefeng;Li Yan;Nie Kailong;Dang Shiyuan;Yao Bingxue;Hua Xue;Tian Guangyan(School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Special Functional Materials for Ecological Environment and Information,Ministry of Education,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学材料科学与工程学院,天津300130 [2]河北工业大学生态环境与信息特种功能材料教育部重点实验室,天津300130

出　　处：《稀有金属材料与工程》2024年第4期963-969,共7页Rare Metal Materials and Engineering

基　　金：Natural Science Foundation of Hebei Province(E2019202411);Open Subjects Foundation of Linze County(408597)。

摘　　要：为提高AgCl纳米粒子(NPs)的分散性和光稳定性,将AgClNPs锚定在凹凸棒石(ATP)表面制备了ATP-AgCl复合材料,研究了其微观形貌、晶体结构及抗菌性能。结果表明:ATP的引入有效避免了AgClNPs的团聚,AgClNPs的粒径从5~10μm显著减小到3~20nm。由于纳米粒子的小尺寸效应,ATP-AgCl复合材料表现出与纯AgCl相媲美的抗菌活性,其对大肠杆菌和金黄色葡萄球菌的抗菌率分别达到99.98%和99.88%。此外,ATP的引入还显著改善了AgClNPs的光稳定性,复合材料经24h阳光暴晒后仍保持原始的灰白色。To enhance the dispersibility and photostability of AgCl nanoparticles(NPs),AgCl NPs were firmly anchored on the surface of attapulgite(ATP)to prepare the ATP-AgCl composites.The microstructure,crystal structure,and antibacterial activity of the ATP-AgCl composites were investigated.Results demonstrate that the introducion of ATP not only avoids the agglomeration of AgCl NPs,but also decreases their particle size from 5–10µm to 3–20 nm.Due to the small size effect of NPs,the antibacterial activity of as-prepared ATP-AgCl composites is comparable to that of pure AgCl.The antibacterial ratios against Escherichia coli and Staphylococcus aureus are 99.98%and 99.88%,respectively.Additionally,the introduction of ATP also improves the photostability of AgCl NPs:the composites remains offwhite after exposure to sunshine for 24 h.

关 键 词：凹凸棒石 氯化银 无机抗菌剂 大肠杆菌 金黄色葡萄球菌 

分 类 号：TB332[一般工业技术—材料科学与工程]