A sonoelectrochemical preparation of graphene nanosheets with graphene quantum dots for their use as a hydrogen peroxide sensor
| Autor: | Su-Yang Hsu, Chien-Liang Lee, Zhe-Ting Liu, Jyun-Sian Ye |
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| Rok vydání: | 2018 |
| Předmět: |
Working electrode
Materials science Graphene General Chemical Engineering Intercalation (chemistry) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention symbols.namesake Chemical engineering law Quantum dot symbols Graphite 0210 nano-technology Raman spectroscopy Nanosheet |
| Zdroj: | Electrochimica Acta. 261:530-536 |
| ISSN: | 0013-4686 |
| Popis: | A sonoelectrochemical method has been successfully developed for the preparation of graphene nanosheet (GN)-supported graphene quantum dots (GN/GQDs) whereby sodium n-octyl sulfate intercalates into the interlayer spaces of a graphite working electrode under the combined effect of an applied potential and acoustic vibration power (640 W). GNs containing only pores can be prepared by lengthening the carbon chain of sodium n-alkyl sulfate (SCxS, x = 10, 12, and 14). Raman and X-ray photoelectron spectroscopic analyses and electrochemical analysis show that the densities of the structural defects on the GN/GQDs and different GNs and their responding activities for H2O2 reduction are dependent on the carbon chain length of SCxS. These GN/GQDs have been used as non-enzymatic sensors for the determination of H2O2. |
| Databáze: | OpenAIRE |
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