Shumaila Islam, Adil Alshoaibi, Nisrin Alnaim, Haifa M. Al Naim
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引用次数: 0
摘要
由于蛋壳消费量不断增加，全球产生了大量蛋壳（ES）废物。对这些废物的管理不善会对环境和公众健康造成严重危害。由于对革兰氏阳性菌金黄色葡萄球菌（SA）和耐甲氧西林金黄色葡萄球菌（MRSA）具有抗菌活性，在 80 °C 下采用溶胶-凝胶法合成了蛋壳（ES）衍生方解石（CaCO3）纤维（CFs）和银纳米颗粒（AgNPs）包裹的 CFs（ACFs）。CFs和ACFs纳米复合材料呈现出以纤维为基础的多孔结构网络。CFs和ACFs具有均匀的Ca、Mg、C、O和Ag分布。CFs 和 ACFs 纳米复合材料显示出异质化学键。ACFs 的热稳定性≤636 °C，结晶尺寸约为 85 nm。在抗菌评估中，发现 ACF 纳米复合材料对 SA 和 MRSA 非常有效。实验结果表明，低温基 ACF 具有抑制多种微生物病原体的潜力。
Silver nanoparticles functionalized calcite fibers derived from eggshell waste: a sustainable nanocomposite for microbial applications
Eggshells (ES) waste is produced in large quantities globally due to their rising consumption. The poor management of these wastes poses serious environmental risks and public health. Owing to antibacterial activity against Gram-positive bacterium Staphylococcus aureus (SA) and Methicillin-resistant Staphylococcus aureus (MRSA), eggshell (ES) derived calcite (CaCO3) fibers (CFs) and silver nanoparticles (AgNPs) encapsulated CFs (ACFs) are synthesized by sol-gel method at 80 °C. The CFs and ACFs nanocomposite revealed a fiber-based porous structural network. The CFs and ACFs possessed a uniform distribution of Ca, Mg, C, O, and Ag. The CFs and ACFs nanocomposite revealed heterogeneous chemical bonding. The ACFs revealed thermal stability at ≤636 °C and crystallite size around 85 nm. For antimicrobial assessment, the ACF nanocomposite is found to be highly effective against SA and MRSA. The experimental finding suggested that low-temperature-based ACFs have the potential to inhibit a wide range of microbial pathogens.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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