Citation: ZHOU Xin, YAO Ai-Hua, ZHOU Tian, WANG De-Ping. Synthesis of Caron Nanobutes@SiO2@Ag Nanocomposites for Surface-Enhanced Raman Scattering[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(3): 543-549. doi: 10.11862/CJIC.2014.058
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With SiO2 acting as an interlinker, multiwalled carbon nanotubes (MWCNTs) were grafted with Ag nanoparticles to form CNTs@SiO2@Ag nancomposites. The microstructure, morphology and composition of the nanocomposites were characterized by TEM, XRD, UV-Vis, XPS. Meanwhile, surface-enhanced Raman scattering (SERS) effect of the nanocomposites was also studied. The results show that Ag nanoparticles effectively improve SERS activity of CNTs, and compared with the pure CNTs, the Raman peak intensities of the nanocomposite increase by 5 times. Furthermore, the SERS activity of the nanocomposite was investigated using Rhodamine 6G (R6G) as the probe molecules. It is found that the SERS signal intensity and quality of the R6G molecules are obviously improved. The high SERS sensitivity of the nanocomposite make it a suitable substrate for noninvasive biomedical detection.
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