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
张可风 1李艳 1乜开龙 1党诗源 1药秉学 2滑雪 1田光燕1
作者信息
- 1. 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
- 2. 河北工业大学材料科学与工程学院,天津 300130
- 折叠
摘要
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.
Abstract
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.
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Key words
attapulgite/silver chloride/inorganic antibacterial agent/Escherichia coli/Staphylococcus aureus引用本文复制引用
基金项目
河北省自然科学基金(E2019202411)
Open Subjects Foundation of Linze County(408597)
出版年
2024
NETL
NSTL
万方数据