室温电子还原制备金纳米颗粒与琼脂糖复合膜的表征与应用

引用本文: 方敏, 王宗元, 刘昌俊. 室温电子还原制备金纳米颗粒与琼脂糖复合膜的表征与应用[J]. 物理化学学报, 2017, 33(2): 435-440. doi: 10.3866/PKU.WHXB201611101 shu

Citation: FANG Min, WANG Zong-Yuan, LIU Chang-Jun. Characterization and Application of Au Nanoparticle/Agarose Composite Film Fabricated by Room Temperature Electron Reduction[J]. Acta Physico-Chimica Sinica, 2017, 33(2): 435-440. doi: 10.3866/PKU.WHXB201611101 shu

室温电子还原制备金纳米颗粒与琼脂糖复合膜的表征与应用

天津大学化工学院, 天津化学化工协同创新中心, 天津 300073
基金项目:
国家自然科学基金（21476157）资助项目

摘要: 利用室温电子还原技术合成了一种金纳米颗粒与琼脂糖复合膜。合成过程采用氩气辉光放电为廉价电子源，方便快捷，绿色环保。通过紫外-可见（UV-Vis）分光光度计、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、X射线衍射（XRD）仪、光电子能谱（XPS）等表征，发现可以通过改变氯金酸浓度调控复合膜中金纳米颗粒的分布，加入聚乙烯吡咯烷酮（PVP）可有效控制金纳米颗粒的形貌。由于复合膜具有金纳米颗粒密集排布的结构，可作为表面增强拉曼散射（SERS）活性基底。实验表明，以对氨基苯硫酚为探针，该复合膜作为SERS基底，SERS平均增强因子超过了10⁶，检测限达到了10^-12 mol·L^-1。除此之外，作为SERS基底，复合膜具有良好的均一性和稳定性。

关键词:

English

Characterization and Application of Au Nanoparticle/Agarose Composite Film Fabricated by Room Temperature Electron Reduction

Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300073, P. R. China
Received Date: 05 September 2016
Revised Date: 09 November 2016
Fund Project:
The project was supported by the National Natural Science Foundation of China (21476157).

Abstract: An Au nanoparticle/agarose composite film was fabricated using room temperature electron reduction with argon glow discharge as a cheap electron source. The synthetic procedure was facile, easy, and green. Characterization by UV-Vis spectrophotometry (UV-Vis), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) revealed that the distribution of Au nanoparticles in the composite film could be tuned by varying the concentration of HAuCl4, while the shape of Au nanoparticles could be controlled by adding polyvinyl pyrrolidone (PVP). The Au nanoparticles were closely packed in the composite film, making an excellent surface enhanced Raman scattering (SERS)-active substrate. A SERS enhanced factor (EF) of over 10⁶ and detection limit as low as 10^-12 mol·L^-1 were obtained for SERS detection using 4-aminothiophenol (4-ATP) as the probe. Moreover, the composite film possessed good uniformity and stability as a SERS substrate.

Key words:

Electron reduction
/ Composite film
/ Au
/ SERS

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室温电子还原制备金纳米颗粒与琼脂糖复合膜的表征与应用

English

Characterization and Application of Au Nanoparticle/Agarose Composite Film Fabricated by Room Temperature Electron Reduction

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通讯作者: 陈斌, bchen63@163.com

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室温电子还原制备金纳米颗粒与琼脂糖复合膜的表征与应用

English

Characterization and Application of Au Nanoparticle/Agarose Composite Film Fabricated by Room Temperature Electron Reduction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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