Modeling and Synthesis of Ag and Ag/Ni Allied Bimetallic Nanoparticles by Green Method: Optical and Biological Properties.
Modeling and Synthesis of Ag and Ag/Ni Allied Bimetallic Nanoparticles by Green Method: Optical and Biological Properties.
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DOI：
10.1155/2018/9658080
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发表时间：
2018
影响因子：
3.1
通讯作者：
Emetere ME
中科院分区：
文献类型：
--
作者：
Akinsiku AA;Dare EO;Ajanaku KO;Ajani OO;Olugbuyiro JAO;Siyanbola TO;Ejilude O;Emetere ME
为了探索环境修复的生态友好合成路线，本文报道了利用植物提取物还原法合成银纳米颗粒（Ag NPs）和银/镍复合纳米颗粒（Ag/Ni NPs）并进行模拟。美人蕉叶提取物中的次生代谢产物起还原剂的作用。在光学测量过程中，电子跃迁导致在416 nm（Ag NPs）和421 nm（Ag/Ni NPs）区域出现表面等离子体共振。使用TEM和EDX进行进一步表征。纳米粒对临床分离菌的抗菌活性具有高度显著性，P < 0.05。这些结果表明，银纳米粒子作为抗菌剂对大肠杆菌的应用。coli、S.化脓性念珠菌和抗真菌药物。白色念珠菌可能的抗菌药物对S。化脓性大肠杆菌和E.基于Ag/Ni纳米杂化物对大肠杆菌的强抑制活性，也可以设计Ag/Ni纳米杂化物。类似地，纳米颗粒中增强的SPR被建议用于光学材料中，作为可见光的良好吸收剂和散射剂。理论模型阐明了金属纳米颗粒穿透肽聚糖层与微生物活性之间关系的实验观察取决于纳米颗粒的性质和层的孔径大小。
In the quest for environmental remediation which involves eco-friendly synthetic routes, we herein report synthesis and modeling of silver nanoparticles (Ag NPs) and silver/nickel allied bimetallic nanoparticles (Ag/Ni NPs) using plant-extract reduction method. Secondary metabolites in the leaf extract of Canna indica acted as reducing agent. Electronic transitions resulted in emergence of surface plasmon resonance in the regions of 416 nm (Ag NPs) and 421 nm (Ag/Ni NPs) during optical measurements. Further characterizations were done using TEM and EDX. Antimicrobial activity of the nanoparticles against clinical isolates was highly significant as P < 0.05. These findings suggest application of Ag NPs as antibacterial agent against E. coli, S. pyogenes, and antifungal agent against C. albicans. Possible antibacterial drugs against S. pyogenes and E. coli can also be designed using Ag/Ni nanohybrid based on their strong inhibition activities. Similarly, the enhanced SPR in the nanoparticles is suggested for applications in optical materials, as good absorbers and scatters of visible light. Theoretical model clarified that the experiment observation on the relationship between metallic nanoparticles penetration through peptidoglycan layers and the activeness of microbial species depends on the nature of the nanoparticles and pore size of the layer.