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首页> 外文期刊>Green Processing and Synthesis >Microwave-enhanced silver nanoparticle synthesis using chitosan biopolymer: optimization of the process conditions and evaluation of their characteristics
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Microwave-enhanced silver nanoparticle synthesis using chitosan biopolymer: optimization of the process conditions and evaluation of their characteristics

机译：微波增强银纳米粒子合成使用壳聚糖生物聚合物：优化工艺条件和它们特征的评价

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摘要

A facile and green synthesis of silver nanoparticles (AgNPs) by aqueous chitosan solution and microwave irradiation is proposed as a cost effective and environmentally benevolent alternative to chemical and physical methods. With this aim, different amounts of chitosan solution (3 9 ml) with several concentration (4-6% w/v) and 3 ml of the silver salt solution (0.5% w/v) were mixed and microwave irradiated for 100 s. Response surface methodology (RSM) was used to evaluate the effects of the amount and concentration of chitosan solution on the particle size and concentration of the synthesized AgNPs. The optimum AgNPs synthesis process was obtained using 9 ml of 0.4% (w/v) chitosan solution. The spherical and more stable AgNPs synthesized at optimum conditions had particle size, concentration, polydispersity index (PDI) and zeta potential values of 37 nm, 69 ppm, 0.557 and +50 mV, respectively. The synthesized AgNPs indicated strong antifungal activity toward Aspergillus flavus and high antibacterial activity against both Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli).
机译：通过壳聚糖水溶液和微波辐射进行化合物和绿色合成银纳米颗粒（AgNP）和微波辐射作为化学和物理方法的成本效益和环境良好的替代品。用这种目的，将不同量的壳聚糖溶液（3 9mL）具有几种浓度（4-6％w / v）和3ml银盐溶液（0.5％w / v）混合，并辐照100 s。响应面方法（RSM）用于评估壳聚糖溶液对粒径和浓度的合成agnps的粒度和浓度的影响。使用9mL 0.4％（w / v）壳聚糖溶液获得最佳AgNP合成方法。在最佳条件下合成的球形和更稳定的AgNP分别具有37nm，69ppm，0.557和+ 50mV的粒径，浓度，多分散性指数（PDI）和Zeta电位值。合成的AgNPS指出了对Aspergillus flavus的强抗真菌活性以及针对革兰氏阳性（金黄色葡萄球菌）和革兰氏阴性细菌（大肠杆菌）的高抗菌活性。

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