Multidimensional Co₃O₄ nano sponge for the highly sensitive SERS applications

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• 作者：Miao-miao Zhao 赵苗苗 ; Wen-yao Liu 刘文耀 ; Jian-gong Du 杜建功…
• 刊名：Optoelectronics Letters
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：13
• 期：1
• 页码：38-41
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Optics, Lasers, Photonics, Optical Devices;
• 出版者：Tianjin University of Technology
• ISSN：1993-5013
• 卷排序：13

文摘

In this work, surface enhanced Raman spectroscopy (SERS) substrates with Ag nanoparticles (NPs) decorated Co₃O₄ nanowires (NWs) grafted on the three-dimensional (3D) network architecture of Ni foam (denoted as Ag-NP@Co₃O₄-NW/Ni-foam) arrays are manufactured. In the experiment, the hierarchical Ag-NP@Co₃O₄-NW/Ni-foam arrays exhibit strong SERS activity due to the higher density of the “hot spots” created from the large quantities of neighboring Ag NPs. Using this hierarchical 3D SERS substrates, the crystal violet (a banned drug of aquaculture) with concentration down to 10-14 mol/L can be detected, which shows potential application in SERS-based rapid trace-level detection of harmful food additives.