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抗壞血酸用于Ag納米粒子的制備及其表面增強(qiáng)拉曼散射活性研究
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國(guó)家自然科學(xué)基金（20974045）；江蘇省自然科學(xué)基金（BK2009385）；巢湖學(xué)院自然科學(xué)基金（XLZ-200902）


Preparation of Silver Nanoparticles by Ascorbic Acid and the Surface-Enhanced Raman Scattering Effect
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    摘要:

    采用硝酸銀 (AgNO3) 為前軀體，抗壞血酸 (Vc) 為還原劑，通過(guò)一條綠色途徑合成了Ag納米粒子，其粒徑大小分布范圍窄。對(duì)產(chǎn)物進(jìn)行X射線衍射 (XRD)、掃描電鏡 (SEM)、透射電鏡 (TEM)、紫外-可見(jiàn)分光光度 (UV-Vis) 等多種手段進(jìn)行表征。以吡啶（Py）作為探針?lè)肿舆M(jìn)行表面增強(qiáng)拉曼散射效應(yīng)的測(cè)定，具有很好的增強(qiáng)效果。結(jié)果表明，光譜的檢測(cè)限為10-10 mol·L-1，且隨探針?lè)肿訚舛认陆?，拉曼信?hào)變化趨勢(shì)很穩(wěn)定，為后續(xù)定量分析打下基礎(chǔ)。

    Abstract:

    Silver nanoparticles were synthesized by a totally green approach with silver nitrate (AgNO3) as precursor and ascorbic acid (Vc) as reducing agent. The nano-silver particles had narrow particle size distribution. The feature, structure and optical absorption properties of silver nanoparticles were characterized by X-ray diffraction (XRD), Raman spectra, ultraviolet visible spectrum (UV-Vis), scanning electron microscope (SEM) and transmission electron microscope (TEM). Surface-enhanced Raman scattering (SERS) on the prepared nano-silver particles as substrate was investigated by pyridine as the probe molecule. The results show that the detection limit is down to 10-10 mol·L-1. The variation tendency of Raman signal is stable with the change of the probe molecule concentration, which can be used for the study of the quantitative analysis.

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薛建躍,劉孝恒,王 新.抗壞血酸用于Ag納米粒子的制備及其表面增強(qiáng)拉曼散射活性研究[J].稀有金屬材料與工程,2012,41(9):1672~1675.[Xue Jianyue, Liu Xiaoheng, Wang Xin. Preparation of Silver Nanoparticles by Ascorbic Acid and the Surface-Enhanced Raman Scattering Effect[J]. Rare Metal Materials and Engineering,2012,41(9):1672~1675.]
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  • 收稿日期:2011-09-10
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