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通过氧分解来减少离子含量和控制纳米封闭银酸纳米颗粒的尺寸比控制

Marco Antonio Lopez Aguila¹, Yingde Xu¹, Yanqin Liang¹

¹Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China.

ACS biomaterials science & engineering

|November 12, 2025

概括

为了提高生物材料的稳定性,合成了银酸盐纳米棒 (Ag-Cit). 最佳的合成时间增强了对大肠杆菌和黄金杆菌的抗菌有效性,为开发稳定的抗菌材料提供了洞察力.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
生物医学工程生物医学工程

背景情况:

基于银的生物材料面临着化学不稳定性和不受控制的离子释放的挑战,这限制了它们的安全应用.
开发稳定的银纳米结构与控制的离子释放对于有效的抗微生物材料至关重要.

研究的目的:

为了合成银酸盐纳米棒 (Ag-Cit),减少聚合和控制性质.
研究合成反应时间对Ag-Cit特性和抗菌功效的影响.
在Ag-Cit合成中确定离子还原和抗菌活性的最佳阶段.

主要方法:

Ag-Cit纳米棒使用酸方法在60°C的温度下合成,反应时间为1-5小时.
包括XRD,DSC,TEM,DLS,SEM,UV-vis,FTIR和XPS/EPM在内的表征.
使用抗生素测试盘和对大肠杆菌和黄金杆菌的时间杀死曲线测试来评估抗菌活性.

主要成果:

合成时间影响了Ag-Cit的特性,5小时的样品显示了增强的晶度和面积比.
5小时的样本实现了超过50%的银离子减少和电中性.
细菌静止和杀菌活动在1小时 (大小) 和5小时 (更高的面积比) 样本中最强.
合溶液的棕色色彩表明了最佳的Ag-Cit稳定性.

结论:

合成反应时间是调整银酸纳米棒的特性和抗菌有效性的关键因素.
为最佳稳定性合成的Ag-Cit化合物 (用棕色表示) 显示出有前途的抗菌潜力.
这项研究为开发基于Ag-Cit纳米棒的稳定,低离子含量抗菌材料提供了基础.

关键词:

抗微生物活性的抗微生物活性.离子减少离子减少纳米封闭是指纳米封闭.纳米制剂是一种纳米制剂.银酸盐是一种银酸盐.

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