Graphene Quantum Dots and Cu(I) Liquid Crystal for Advanced Electrochemical Detection of Doxorubicine in Aqueous Solutions
| Autor: | Bianca Schinteie, Carmen Cretu, Aniela Pop, Sorina Claudia Negrea, Sorina Motoc Ilies, Elisabeta I. Szerb, Florica Manea |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Aqueous solution Materials science graphene quantum dots Graphene General Chemical Engineering C-based paste electrodes Analytical chemistry Carbon nanotube Amperometry Article law.invention Chemistry liquid crystalline Cu(I) coordination complex law Quantum dot Electrode electrochemical detection doxorubicine General Materials Science Differential pulse voltammetry QD1-999 |
| Zdroj: | Nanomaterials Volume 11 Issue 11 Nanomaterials, Vol 11, Iss 2788, p 2788 (2021) |
| ISSN: | 2079-4991 |
| Popis: | Two paste electrodes based on graphene quantum dots and carbon nanotubes (GRQD/CNT) and one modified with a homoleptic liquid crystalline Cu(I) based coordination complex (Cu/GRQD/CNT) were obtained and morphostructurally and electrochemically characterized in comparison with simple CNT electrode (CNT) for doxorubicine (DOX) detection in aqueous solutions. GRQD/CNT showed the best electroanalytical performance by differential pulse voltammetry technique (DPV). Moreover, applying a preconcentration step prior to detection stage, the lowest limit of detection (1 ng/L) and the highest sensitivity (216,105 µA/mg·L−1) in comparison with reported literature data were obtained. Cu/GRQD/CNT showed good results using multiple pulse amperometry technique (MPA) and a favorable shifting of the potential detection to mitigate potential interferences. Both GRQD-based paste electrodes have a great potential for practical utility in DOX determination in water at trace concentration levels, using GRQD/CNT with DPV and in pharmaceuticals formulations using Cu/GRQD/CNT with MPA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|