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摘要
纳米金呈现优良的光、电和催化性能,广泛应用于材料科学、生物技术和医学诊断等领域。传统方法以硼氢化钠或柠檬酸钠为还原剂,所得产物稳定性低、均匀性差。以绿茶提取物为还原剂,提出了制备稳定性高、均匀性好的绿色、环保、可控纳米金制备新方法。结果表明:通过调节绿茶提取物的浓度,可实现对纳米金可控制备。采用红外光谱法表征、紫外分光光度法、X射线衍射分析法对其结构和性能进行表征,所得的纳米金形貌均一、稳定性好。进一步将其用于拉曼光谱和激光诱导击穿光谱研究,均呈现显著的信号增强效应,可作为高光谱研究的纳米增强剂。
Abstract
Nanogold exhibits excellent optical,electric and catalytic properties,and is widely applied in materials science,biotechnology,and medical diagnostics.Traditional preparation methods use sodium borohydride or sodium citrate as reducing agents,resulting in products with low stability and poor uniformity.This paper proposed a green,environmentally friendly,and controllable synthesis method to prepare nanogold with high stability and uniformity using green tea extract as a reducing agent.The results showed that by adjusting the concentration of green tea extract,the controllable preparation of nanogold was achieved.The structure and performance of the obtained nanogold were characterized by infrared spectroscopy,ultraviolet spectrophotometry,X-ray diffraction analysis and other methods.The obtained nanogold exhibited uniform morphology and excellent stability.When the prepared nanogold was used in Raman spectroscopy and laser-induced breakdown spectroscopy (LIBS) research,it demonstrated a significant enhancement effect,indicating its potential as nano-enhancer for hyperspectral research.
关键词
纳米金
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绿茶提取液
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可控制备
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表征
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应用
Key words
nanogold
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green tea extract
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controllable preparation
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characterization
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application
绿色可调控制备纳米金及其应用研究[J].
化工新型材料, 2026, 54(8): 232-235 DOI:10.19817/j.cnki.issn1006-3536.2026.08.037
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基金资助
陕西省科技新星基金项目(2018KJXX-090);陕西省自然科学基金项目(2022JM-075、2020JQ-886和2018JM3036);陕西省“十四五”教育科学规划课题项目(SGH22Y1392);陕西省教育厅科研计划项目(23JP146、23JP147);西安市科技计划项目(22GXFW0112);西安市科技计划创新基金“文理专项”项目(24GXFW0081-11);西安文理学院三年行动计划项目(21XJZZ0001-11);西安文理学院博士启动基金项目(06005017)
