In this work,surface enhanced Raman spectroscopy(SERS) substrates with Ag nanoparticles(NPs) decorated Co_3O_4nanowires(NWs) grafted on the three-dimensional(3D) network architecture of Ni foam(denoted as Ag-NP@Co_3O_...In this work,surface enhanced Raman spectroscopy(SERS) substrates with Ag nanoparticles(NPs) decorated Co_3O_4nanowires(NWs) grafted on the three-dimensional(3D) network architecture of Ni foam(denoted as Ag-NP@Co_3O_4^-NW/Ni-foam) arrays are manufactured. In the experiment,the hierarchical Ag-NP@Co_3O_4^-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.展开更多
基金supported by the National Natural Science Foundation of China(Nos.51225504,61127008 and 61571405)the Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi Provincethe project supported by Science Foundation of North University of China(No.110248-28140)
文摘In this work,surface enhanced Raman spectroscopy(SERS) substrates with Ag nanoparticles(NPs) decorated Co_3O_4nanowires(NWs) grafted on the three-dimensional(3D) network architecture of Ni foam(denoted as Ag-NP@Co_3O_4^-NW/Ni-foam) arrays are manufactured. In the experiment,the hierarchical Ag-NP@Co_3O_4^-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.
