Abstract We reported an eco-friendly, rapid and easy method for the green synthesis of gold nanoparticles (AuNPs) using Hedysarum polysaccharides (HPS) extracted from Radix Hedysari. To deeply explore the synthetic mechanism, the monosaccharides that made up HPS and other Radix Hedysari extract were also used as reductant to synthesize AuNPs. A series of techniques were conducted to confirm the formation of HPS-AuNPs. Moreover, as a sensitive optical detector, the large-sized HPS-AuNPs was used to selectively detect iron ion (Fe3+) among the other metal irons and was successfully applied in the tap water detection with a wide range of 1 μM to 10 mM, a low detection limit of 0.57 μM. Besides, the catalytic activity of HPS-AuNPs was also proved to be well in the reduction of 4-nitrophenol to 4-aminophenol by NaBH4. This is the first report for the green synthesis of HPS-AuNPs, providing a sensitive detector and a well-active catalyst.

中文翻译：

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Hedysarum 多糖介导的金纳米粒子的绿色合成及其特性、分析价值、催化活性的研究

摘要 我们报道了一种环保、快速、简单的方法，使用从海地草中提取的海地多糖 (HPS) 绿色合成金纳米粒子 (AuNPs)。为深入探索合成机理，HPS 等提取物的单糖也被用作还原剂合成 AuNPs。进行了一系列技术来确认 HPS-AuNPs 的形成。此外，作为一种灵敏的光学检测器，大尺寸的 HPS-AuNPs 用于选择性检测其他金属铁中的铁离子 (Fe3+)，并成功应用于 1 μM 至 10 mM 的广泛范围的自来水检测， 0.57 μM 的低检测限。此外，HPS-AuNPs 的催化活性也被证明在 NaBH4 将 4-硝基苯酚还原为 4-氨基苯酚方面具有良好的催化活性。