开发与应用

银纳米线-石墨烯-金纳米球复合表面增强拉曼光谱基底的构建及其对多环芳烃的检测

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  • 中国石化青岛安全工程研究院,青岛266071
王世强(1991-),男,博士,主要研究方向为功能材料的制备和相关光谱分析技术,E-mail:sqw2303@163.com。

收稿日期: 2021-05-18

  修回日期: 2021-09-03

  网络出版日期: 2021-12-13

基金资助

国家自然科学基金(52003297)

Fabrication of hierarchical SERS substrate composed by silver nanowire-graphene-gold nanosphere for the detection of polycyclic aromatic hydrocarbons

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  • SINOPEC Research Institute of Safety Engineering,Qingdao 266071

Received date: 2021-05-18

  Revised date: 2021-09-03

  Online published: 2021-12-13

摘要

表面增强拉曼光谱(SERS)技术以其便捷性、灵敏性和指纹特征,可用于检测环境中微量的多环芳烃。制备的新型SERS基底,由硫醇修饰的银纳米线-石墨烯-金纳米球叠层复合而成,具有丰富的电磁场增强区域,能够通过π-π堆积作用和疏水作用协同选择性吸附环境中的多环芳烃,实现对其拉曼信号的放大。该基底对芘、苯并芘、蒽、菲的最低检测浓度均为10-6mol/L,特征峰强度与浓度对数的相关性系数均大于0.98,且具有良好的均一性。该材料能够快速、准确地实现对多环芳烃的定性和定量检测,为改善化工生产和环境中多环芳烃的污染形势提供技术支持。

本文引用格式

王世强, 孙冰, 姜慧芸, 安飞, 金艳, 赵辰阳 . 银纳米线-石墨烯-金纳米球复合表面增强拉曼光谱基底的构建及其对多环芳烃的检测[J]. 化工新型材料, 2021 , 49(11) : 247 -251 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.11.051

Abstract

Surface Enhanced Raman Spectroscopy (SERS) technology can be used to detect trace amounts of polycyclic aromatic hydrocarbons (PAHs) in the environment due to its convenience,sensitivity and fingerprint characteristics.A new type of SERS substrates,composed of hierarchical thiol-modified silver nanowire-graphene-gold nanosphere,is able to induce rich electromagnetic field enhanced area and synergistically selectively adsorb PAHs in the environment through π-π stacking interaction and hydrophobic interaction,achieving the amplification of Raman signal of PAHs.The minimum detection concentration of pyrene,benzopyrene,anthracene,and phenanthrene by this substrate was 10-6 mol/L,and the correlation coefficients of the characteristic peak intensity and the logarithm of the concentration were all larger than 0.98,as well as the substrates had good uniformity.The SERS substrates can quickly and accurately realize the qualitative and quantitative detection of polycyclic aromatic hydrocarbons,which could provide technical support for improving the pollution situation of polycyclic aromatic hydrocarbons in the chemical production and the environment.

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