Seed-mediated synthesis of high-performance silver-coated magnetic nanoparticles and their use as effective SERS substrates
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- 作者：Chongwen Wanga ; b ; 1 ; Zhen Rongb ; 1 ; Jing Wangb ; c ; Na Jiangb ; Yuanfeng Pangb ; ; Rui Xiaob ; ruixiao203@sina.com" class="auth_mail" title="E-mail the corresponding author ; Shengqi Wanga ; b ; sqwang@bmi.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Fe3O4@SiO2@Ag ; SERS ; Magnetic nanoparticle ; Ag nanoshell
- 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
- 出版年：2016
- 出版时间：5 October 2016
- 年：2016
- 卷：506
- 期：Complete
- 页码：393-401
- 全文大小：2727 K
文摘
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A simple but effective way of fabricating high-performance Fe3O4@SiO2@Ag MNPs.
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The inner SiO2 shell improves the dispersion of MNPs and provides sites for Ag seed deposition.
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The shell-coating process was completed within a few seconds and the resulting product highly uniform in size and shape.
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The MNPs combine the merits of both Ag NPs and Fe3O4 MNPs can be a versatile SERS substrate.
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Detection of the pesticide thiram with a low LOD of 1 ÿ 10⿿9 M.