Surface enhanced Raman scattering on SiO2/Ag nanoparticles aggregate and preparation of nitrogen-doped carbon dots by pyrolysis of Co(2,2′-bipyridine)2(dicyanamide)2
| Autor: | Shao-Fang Huo, Qi-Liang Ma, Zhao-Chun Zhang |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Inorganic chemistry Biomedical Engineering chemistry.chemical_element Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Silver nanoparticle 2 2'-Bipyridine 0104 chemical sciences Bipyridine chemistry.chemical_compound symbols.namesake Adsorption chemistry symbols Physical chemistry General Materials Science 0210 nano-technology Cobalt Dicyanamide Pyrolysis Raman scattering |
| Zdroj: | Journal of Experimental Nanoscience. 11:669-680 |
| ISSN: | 1745-8099 1745-8080 |
| DOI: | 10.1080/17458080.2015.1118162 |
| Popis: | Co(2,2'-bipyridine)2(dicyanamide)2, Co(bpy)2(N(CN)2)2, was synthesised by solution crystallisation method. The ‘external’ lattice modes of Co(bpy)2(N(CN)2)2 crystal have been determined by use of the method of nuclear site group analysis. Based on the surface enhanced Raman scattering (SERS) activity of silver nanoparticles (Ag-NPs), a SiO2/Ag-NPs/Co(bpy)2(N(CN)2)2 aggregate was prepared in order to better analyse the adsorption orientation of the cobalt complex on the surface of Ag-NPs. The result of the SERS measurement indicates that the molecular plane presents a tilted orientation with respect to the Ag-NPs surface. The system described here could serve as the basis for a study of accurate and available SERS sensor. The pyrolysis products at 553 and 593 K, respectively, in air have been investigated. The results showed that nitrogen-doped carbon dots were obtained from the pyrolysis products of Co(bpy)2(N(CN)2)2 calcined at 553 K. This process can be exploited as a simple and effective path f... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|