Green synthesis of gold nanoparticles using Nyctanthes arbortristis flower extract
Green synthesis of gold nanoparticles using Nyctanthes arbortristis flower extract
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DOI：
10.1007/s00449-010-0510-y
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发表时间：
2011-06-01
影响因子：
3.8
通讯作者：
Bora, Utpal
中科院分区：
文献类型：
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作者：
Das, Ratul Kumar;Gogoi, Nayanmoni;Bora, Utpal
本研究探讨了植物夜来香花的乙醇提取物用于合成金纳米颗粒的还原和封端潜力。将不同体积分数的萃取物与HAuCl 4水溶液在80 A ℃下搅拌30 min。对反应产物的紫外-可见光谱分析证实了Au 3+离子成功还原为金纳米颗粒。透射电子显微镜（TEM）显示占主导地位的球形形态的金纳米粒子的平均直径为19.8 +/- A 5.0 nm。X射线衍射（XRD）研究证实了合成颗粒的结晶性质。傅立叶变换红外（FTIR）和核磁共振（NMR）分析的纯化和冻干的金纳米粒子证实了表面吸附的生物分子在制备过程中，并导致长期（6个月）的稳定性。低反应温度（25 A ℃）有利于各向异性。花提取物的强还原能力也可以在其他金属纳米颗粒的绿色合成中进行测试。
The present study explores the reducing and capping potentials of ethanolic flower extract of the plant Nyctanthes arbortristis for the synthesis of gold nanoparticles. The extract at different volume fractions were stirred with HAuCl4 aqueous solution at 80 A degrees C for 30 min. The UV-Vis spectroscopic analysis of the reaction products confirmed successful reduction of Au3+ ions to gold nanoparticles. Transmission electron microscope (TEM) revealed dominant spherical morphology of the gold nanoparticles with an average diameter of 19.8 +/- A 5.0 nm. X-ray diffraction (XRD) study confirmed crystalline nature of the synthesized particles. Fourier transform infra-red (FTIR) and nuclear magnetic resonance (NMR) analysis of the purified and lyophilized gold nanoparticles confirmed the surface adsorption of biomolecules during preparation and caused long-term (6 months) stability. Low reaction temperature (25 A degrees C) favored anisotropy. The strong reducing power of the flower extract can also be tested in the green synthesis of other metallic nanoparticles.