<br>利用具有莲花效应的特殊植物叶子绿色合成银纳米片,RSC Advances

当前位置： X-MOL 学术 › RSC Adv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

利用具有莲花效应的特殊植物叶子绿色合成银纳米片
RSC Advances ( IF 3.9 ) Pub Date : 2020-10-6 , DOI: 10.1039/d0ra06533a
Sangeeta Agarwal ₁ , Manisha Gogoi ₁ , Smritirekha Talukdar ₁ , Pinky Bora ₂ , Tarun Kumar Basumatary ₂ , N Nirjanta Devi ₂

Affiliation

本文报道了首次利用植物叶子绿色合成银纳米片，具有荷花效应的特点。为此目的选择了凤眼莲和芋头植物叶子。这些植物的水性叶提取物在以硝酸银为前体的水热合成银纳米片中用作还原剂和稳定剂。形成良好分散的银纳米片。对应于面内和面外振动的两个SPR（表面等离子共振）带的出现证实了各向异性纳米结构的形成。紫外-可见光谱中纳米结构峰的蓝移提供了有关纳米板随时间稳定性的信息。动态光散射（DLS）和粉末 XRD 分别用于评估这些纳米结构的最终平均直径和晶体结构。 FESEM/EDX 和 HRTEM/SAED 图像也证实了银纳米板的形成。 FT-IR 光谱有助于识别植物叶子提取物在二维纳米结构形成过程中的还原和稳定成分。使用这些纳米板检查了初步抗菌活性。观察到金黄色葡萄球菌（一种革兰氏阳性细菌）的显着抑制区。

"点击查看英文标题和摘要"

Green synthesis of silver nanoplates using the special category of plant leaves showing the lotus effect

This paper reports the first ever green synthesis of silver nanoplates using plant leaves having the special feature of showing the lotus effect. Eichhornia crassipes and Colocasia esculenta plant leaves were chosen for the purpose. The aqueous leaf extract of these plants was used as a reducing as well as stabilizing agent in the hydrothermal synthesis of silver nanoplates using silver nitrate as the precursor. Well dispersed silver nanoplates were formed. The appearance of two SPR (Surface Plasmon Resonance) bands corresponding to in-plane and out of plane vibration confirmed the formation of anisotropic nanostructures. The blue shift in peaks of the nanostructures in UV-visible spectra gave information about the stability of the nanoplates with time. Dynamic Light Scattering (DLS) and powder XRD were used to evaluate the ultimate average diameter and crystal structure of these nanostructures respectively. FESEM/EDX and HRTEM/SAED images also confirmed the formation of silver nanoplates. The FT-IR spectra helped to identify the reducing and stabilizing component of plant leaves extract in the formation of 2-D nanostructures. Preliminary antibacterial activity was examined using these nanoplates. A significant zone of inhibition was observed for S. aureus, a Gram positive bacterium.

更新日期：2020-10-06

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南