Highly Selective Simultaneous Detection of 1,4-Dihydroxybenzene and 1,2-Dihydroxybenzene Based on CdSe Quantum Dots-Multiwalled Carbon Nanotube Composite
| Autor: | Salih Zeki Bas, Canan Baslak, Salih Yildiz, Elif Ezgi Kal |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Nanotube Catechol Materials science Hydroquinone 010401 analytical chemistry Analytical chemistry Carbon nanotube 01 natural sciences Fluorescence 0104 chemical sciences Electrochemical gas sensor law.invention chemistry.chemical_compound chemistry law Electrode Electrical and Electronic Engineering Instrumentation |
| Zdroj: | IEEE Sensors Journal. 20:32-38 |
| ISSN: | 2379-9153 1530-437X |
| Popis: | A new electrochemical sensor based on CdSe quantum dots-multiwalled carbon nanotube composite film (CdSeQDs-cMWCNTs) was developed for highly selective simultaneous determination of 1,4-dihydroxybenzene (hydroquinone, HQ) and 1,2-dihydroxybenzene (catechol, CC) in 0.1 M phosphate buffer solution (pH 7.4). CdSeQDs-cMWCNTs/GCE exhibited two well-distinguished anodic peaks with large currents for simultaneous detection of HQ and CC in comparison with bare GCE and cMWCNTs/GCE. Furthermore, CdSeQDs-cMWCNTs/GCE has an excellent anti-interference ability for the detection of HQ and CC in the presence of some inorganic compounds and phenol derivatives. Under the optimized condition, CdSeQDs-cMWCNTs/GCE showed wide linear responses from $0.5~\mu \text{M}$ to $110~\mu \text{M}$ for HQ, and from $0.5~\mu \text{M}$ to $110~\mu \text{M}$ for CC, with the detection limits of $0.35~\mu \text{M}$ and $0.25~\mu \text{M}$ , respectively. CdSeQDs-cMWCNTs/GCE was successfully applied to the simultaneous determination of HQ and CC in tap water with satisfactory recovery. |
| Databáze: | OpenAIRE |
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