首页|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

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

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为提高AgCl纳米粒子(NPs)的分散性和光稳定性,将AgCl NPs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AgCl NPs的团聚,AgCl NPs的(立)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AgCl NPs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.
In-situ Synthesis of Silver Chloride Nanoparticle-Loaded Attapulgite Composites with Efficient Antimicrobial Activity
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 5-10 μm 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.

attapulgitesilver chlorideinorganic antibacterial agentEscherichia coliStaphylococcus aureus

张可风、李艳、乜开龙、党诗源、药秉学、滑雪、田光燕

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河北工业大学材料科学与工程学院,天津 300130

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

凹凸棒石 氯化银 无机抗菌剂 大肠杆菌 金黄色葡萄球菌

河北省自然科学基金Open Subjects Foundation of Linze County

E2019202411408597

2024

稀有金属材料与工程
中国有色金属学会,中国材料研究学会,西北有色金属研究院

稀有金属材料与工程

CSTPCD北大核心
影响因子:0.634
ISSN:1002-185X
年,卷(期):2024.53(4)
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