Facile and low-cost fabrication of Ag-Cu substrates via replacement reaction for highly sensitive SERS applications

被引:18
作者
Hu, Litao [1 ]
Liu, Yan Jun [2 ]
Xu, Shicai [3 ]
Li, Zhe [1 ]
Guo, Jia [1 ]
Gao, Saisai [1 ]
Lu, Zhengyi [1 ]
Si, Haipeng [4 ]
Jiang, Shouzhen [1 ]
Wang, Shuyun [1 ]
机构
[1] Shandong Nomal Univ, Sch Phys & Elect, Jinan 250014, Peoples R China
[2] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
[3] Dezhou Univ, Coll Phys & Elect Informat, Shandong Prov Key Lab Biophys, Dezhou 253023, Peoples R China
[4] Shandong Univ, Qilu Hosp, Dept Orthopaed, Jinan 250012, Peoples R China
基金
中国国家自然科学基金;
关键词
HIGH-PERFORMANCE SERS; ORIENTED ATTACHMENT; RAMAN-SPECTROSCOPY; LARGE-SCALE; SILVER; NANOPARTICLES; DENDRITES; GROWTH; MONODISPERSE; CRYSTALLINE;
D O I
10.1016/j.cplett.2016.11.022
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, we demonstrated facile and low-cost fabrication of highly sensitive SERS substrates via replacement reaction by immersing Cu foils into a AgNO3 solution. Different morphologies of Ag nanostructures were observed on the substrate surface by controlling the reaction time. The growth mechanism of Ag nanostructures on the Cu substrates was also analyzed based on the nanostructure evolution. The Ag-Cu substrates showed optimum SERS enhancement at certain reaction time, and the minimum detected concentration of Rhodamine 6G is as low as 10(-13) M. The easy and low-cost fabrication makes the Ag-Cu SERS substrates promising for rapid, sensitive detection of targeted analytes, such as biomolecules, pollutants, and explosives in the environment. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:351 / 356
页数:6
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