Understanding the redox reactions of adjacent carboxyl groups and anhydride groups following citric acid treatment of defect-containing multiwalled carbon nanotubes
| Autor: | Kouya Eguchi, Fumitaka Kobayashi, Jiuting Chen, Keiko Waki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Properties of water
Strong acids chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Multiwalled carbon 01 natural sciences Redox 0104 chemical sciences lcsh:Chemistry chemistry.chemical_compound chemistry lcsh:Industrial electrochemistry lcsh:QD1-999 Polymer chemistry Electrochemistry Surface modification 0210 nano-technology Citric acid Carbon lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 91, Iss, Pp 25-30 (2018) |
| Popis: | Although carbon materials have been widely used in battery applications, the origin of the redox reaction appearing in the important potential region is not well understood. Moreover, typical functionalization treatments that use diluted strong acids are limited by strong oxidation and the properties of water-based solutions. Thus, most treatments cannot precisely control the nature of functional groups. The present work investigates a citric acid treatment that selectively fixes carboxyl and anhydride groups onto multiwalled carbon nanotubes at low temperatures. The results show that the edges of the defect structures of multiwalled carbon nanotubes provide suitable positions at which redox-active adjacent carboxyl groups and anhydride groups can form during citric acid treatment. Keywords: Multiwalled carbon nanotube, Citric acid, Redox reaction, Functional groups |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|