Electrochemical synthesis of thin-layered graphene oxide-poly(CTAB) composite for detection of morphine
| Autor: | T.E. Mary Nancy, S. Renjini, V. Anitha Kumary, Pinky Abraham |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Tertiary amine Graphene General Chemical Engineering Composite number Oxide Cationic polymerization 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering law Electrode Materials Chemistry 0210 nano-technology Lone pair |
| Zdroj: | Journal of Applied Electrochemistry. 50:41-50 |
| ISSN: | 1572-8838 0021-891X |
| Popis: | In this work, poly(cetyltrimethylammoniumbromide)/graphene oxide (poly(CTAB)/GO) composite was synthesized via in situ electropolymerisation and used as novel sensor for morphine (MO) detection. The CTAB functionalized graphene sheet offers large surface area which remarkably enhances the electrochemical response of MO compared to that of bare glassy carbon electrode (GCE). The surfactant CTAB with its hydrophilic head and hydrophobic tail plays a significant role in enhancing the catalytic property of the electrode. The electrostatic interaction between cationic group of poly (CTAB) and lone pair on nitrogen atom of tertiary amine group of MO favours the electro oxidation of tertiary amine group rather than phenolic group. A detection limit of 0.36 μM and a wide linear range of 50–60 μM feature the merits of the proposed composite in the analysis of MO. This sensor shows good repeatability, reproducibility, stability and anti interference properties. It is also tested in real samples. Schematic representation of the electrochemical behaviour of the modified electrode poly (CTAB)/GO/GCE towards morphine. |
| Databáze: | OpenAIRE |
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