Biosynthesis of Silver Nanoparticles Using Brown Marine Macroalga, Sargassum Muticum Aqueous Extract.
Biosynthesis of Silver Nanoparticles Using Brown Marine Macroalga, Sargassum Muticum Aqueous Extract.
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DOI：
10.3390/ma6125942
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发表时间：
2013-12-18
期刊：
影响因子：
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通讯作者：
Mohamad R
中科院分区：
文献类型：
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作者：
Azizi S;Namvar F;Mahdavi M;Ahmad MB;Mohamad R
纳米颗粒的生物合成是纳米技术的一个相对新兴的领域，其具有比化学和物理合成过程更经济和环保的益处。本文首次报道了棕色海洋藻类Sargassum muticum（S. Muticum）水提取物用作合成纳米结构银颗粒（Ag-NP）的还原剂。采用FTIR、XRD、TEM、UV-Vis等方法对合成的纳米粒子的结构、形貌和光学性质进行了系统的表征。通过使用UV-可见分光光度计在420 nm处的强吸收峰的存在来确认Ag-NP的形成。TEM图像显示颗粒为球形，尺寸范围为5至15 nm。纳米颗粒本质上是结晶的。这通过XRD图谱证实。从FTIR结果可以看出，还原主要是通过S. muticum。
Biological synthesis of nanoparticles is a relatively new emerging field of nanotechnology which has economic and eco-friendly benefits over chemical and physical processes of synthesis. In the present work, for the first time, the brown marine algae Sargassum muticum (S. muticum) aqueous extract was used as a reducing agent for the synthesis of nanostructure silver particles (Ag-NPs). Structural, morphological and optical properties of the synthesized nanoparticles have been characterized systematically by using FTIR, XRD, TEM and UV–Vis spectroscopy. The formation of Ag-NPs was confirmed through the presence of an intense absorption peak at 420 nm using a UV–visible spectrophotometer. A TEM image showed that the particles are spherical in shape with size ranging from 5 to 15 nm. The nanoparticles were crystalline in nature. This was confirmed by the XRD pattern. From the FTIR results, it can be seen that the reduction has mostly been carried out by sulphated polysaccharides present in S. muticum.