Magnetic assembled 3D SERS substrate for sensitive detection of pesticide residue in soil

被引：22
作者：
Gong, Tianxun [1 ]
Huang, Yifeng [1 ]
Wei, Zenjiang [1 ]
Huang, Wen [1 ]
Wei, Xiongbang [2 ]
Zhang, Xiaosheng [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, Chengdu 610054, Peoples R China
来源：
NANOTECHNOLOGY | 2020年 / 31卷 / 20期
基金：
中国国家自然科学基金;
关键词：
3D SERS substrate; self-assembled nanoparticles; magnetic force assisting; hexachlorobenzene; pollutants residue; ENHANCED RAMAN-SCATTERING; GRAPHENE; SPECTROSCOPY; NANOGAP; ARRAYS; PERFORMANCE; MONOLAYER;
D O I：
10.1088/1361-6528/ab72b7
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Three-dimensional (3D) surface enhanced Raman scattering (SERS) substrates were produced by magnetic force assisting self-assembled nanoparticles in arrayed holes. Compared to '2D' plasmonic structures used in conventional SERS substrates, the 'hot spots' existed on whole depth of the 3D SERS substrates, which greatly enhanced the sensitivity. The prepared 3D SERS substrate was able to detect 4-aminothiophenol with a concentration down to 1 pM. Furthermore, the substrate was applied to detect hexachlorobenzene residue in soil, indicating its great potential for rapid and sensitive detection of extreme low concentrated molecules, especially pollutants residues in foods and environments.
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页数：8
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