Multidimensional Co3O4nano sponge for the highly sensitive SERS applications

作者：Zhao Miao miao; Liu Wen yao; Du Jian gong; Guo Xu dong; Wang Lei; Xia Mei jing; Tang Jun^*

来源：Optoelectronics Letters, 2017, 13(1): 38-41.

DOI：10.1007/s11801-017-6236-1

• Ag nanoparticle
• Crystal violet
• Hot spot
• Nanowires (NWs)
• SERS substrate
• Surface enhanced Raman spectroscopy
• Three-dimensional (3D) networks
• Trace-level detection

In this work, surface enhanced Raman spectroscopy (SERS) substrates with Ag nanoparticles (NPs) decorated Co3O4nanowires (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 10-14mol/L can be detected, which shows potential application in SERS-based rapid trace-level detection of harmful food additives.

• 出版日期2017
• 单位test; 中北大学