Dissolved oxygen detection by galvanic displacement-induced graphene/silver nanocomposite
| Autor: | Wen Cai, Yuhong Zheng, Zhuxian Fu, Aiwu Wang, Li Fu |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nanocomposite Graphene Scanning electron microscope Oxide Nanoparticle Nanotechnology law.invention Electrochemical gas sensor symbols.namesake chemistry.chemical_compound Chemical engineering chemistry Mechanics of Materials law symbols Galvanic cell General Materials Science Raman spectroscopy |
| Zdroj: | Bulletin of Materials Science. 38:611-616 |
| ISSN: | 0973-7669 0250-4707 |
| Popis: | This paper proposed a simple, efficient and sensitive electrochemical sensor for dissolved oxygen (DO) detection based on a galvanic displacement synthesized reduced graphene oxide–silver nanoparticles (RGO/Ag) composite modified grassy carbon electrode (GCE). The synthesized RGO/Ag nanocomposite was characterized by UV–vis spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicate the graphene oxide (GO) has been successfully reduced during the galvanic displacement process and the average size of Ag nanoparticle is 52 nm. The RGO/Ag nanocomposite-modified GCE showed a significant enhancement of DO detection compared with bare and RGO-modified GCEs. Moreover, the proposed DO sensor also exhibited an excellent repeatability, reproducibility and anti-interference ability. |
| Databáze: | OpenAIRE |
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