在不同浓度κ-卡拉胶存在下银纳米颗粒的绿色声化学合成
Green sonochemical synthesis of silver nanoparticles at varying concentrations of κ-carrageenan.
作者信息
Elsupikhe Randa Fawzi, Shameli Kamyar, Ahmad Mansor B, Ibrahim Nor Azowa, Zainudin Norhazlin
机构信息
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia,
出版信息
Nanoscale Res Lett. 2015 Dec;10(1):916. doi: 10.1186/s11671-015-0916-1. Epub 2015 Jul 28.
A green sonochemical method was developed for preparing silver nanoparticles (Ag-NPs) in different concentrations of kappa carrageenan (κ-carrageenan). The κ-carrageenan was used as a natural eco-friendly stabilizer, and ultrasonic irradiation was used as a green reducing agent. The number of Ag-NPs increased with increasing κ-carrageenan concentrations. Formation of Ag/κ-carrageenan was determined by UV-visible spectroscopy where the surface plasmon absorption maximum was observed at 402 to 420 nm. The X-ray diffraction (XRD) analysis showed that the Ag-NPs are of a face-centered cubic structure. The Fourier transform infrared (FT-IR) spectrum indicated the presence of Ag-NPs in κ-carrageenan. Transmission electron microscopy (TEM) image for the highest concentration of κ-carrageenan showed the distribution of Ag-NPs with an average particle size near to 4.21 nm. Scan electron microscopy (SEM) images illustrated the spherical shape of the Ag-NPs. The use of photo irradiation provides a green and economic feature to this work.
开发了一种绿色声化学方法，用于在不同浓度的κ-卡拉胶（κ-carrageenan）中制备银纳米颗粒（Ag-NPs）。κ-卡拉胶用作天然环保稳定剂，超声辐照用作绿色还原剂。Ag-NPs的数量随着κ-卡拉胶浓度的增加而增加。通过紫外可见光谱法确定了Ag/κ-卡拉胶的形成，在402至420nm处观察到表面等离子体吸收最大值。X射线衍射（XRD）分析表明，Ag-NPs为面心立方结构。傅里叶变换红外（FT-IR）光谱表明κ-卡拉胶中存在Ag-NPs。κ-卡拉胶最高浓度的透射电子显微镜（TEM）图像显示了Ag-NPs的分布，平均粒径接近4.21nm。扫描电子显微镜（SEM）图像说明了Ag-NPs的球形形状。光辐照的使用为这项工作提供了绿色和经济的特点。
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