Sol-Gel Synthesis of Carbon Xerogel-ZnO Composite for Detection of Catechol
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemicals and Reagents
2.2. Apparatus
2.3. Synthesis of CXZnO Composites
2.4. Preparation of Biosensors
3. Results and Discussion
3.1. Characterization of CXZnO Composites
3.2. Electrochemical Studies of Modified Electrodes
Lac(deoxy) + O2 + 4H+ → Lac(oxy) + 2H2O
3.3. Analytical Performance for Detecting Catechol
3.4. Real Sample Analysis
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Electrodes | Detection Limit (µM) | Linear Range (µM) | Sensitivity (µA/mM) | Ref. |
---|---|---|---|---|
MB-MCM-41/PVA/lac | 0.331 | 4–87.98 | – | [19] |
GCE/MCN/Tyr | 0.01 | 0.05–12.5 | – | [20] |
Lac/AP- rGOs/Chit/GCE | 7 | 15–700 | 15.79 | [21] |
Lac-FSM7.0-GC | 2 | 2–100 | – | [22] |
Cu-OMC/Lac/CS/Au | 0.67 | 0.67–13.8 | 104 | [23] |
GCE/Lac-CXZnO-Nafion | 2.17 | 6.91–453 | 31.2 | This work |
Sample | Cadded (µM) | Cfound (µM) | Recovery (%) | RSD (%) |
---|---|---|---|---|
a | 100.00 | 103.26 | 103.26 | 2.52 |
– | 100.00 | 98.93 | 98.93 | – |
– | 100.00 | 97.31 | 97.31 | – |
– | 100.00 | 102.47 | 102.47 | – |
– | 100.00 | 101.95 | 101.95 | – |
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Li, D.; Zang, J.; Zhang, J.; Ao, K.; Wang, Q.; Dong, Q.; Wei, Q. Sol-Gel Synthesis of Carbon Xerogel-ZnO Composite for Detection of Catechol. Materials 2016, 9, 282. https://doi.org/10.3390/ma9040282
Li D, Zang J, Zhang J, Ao K, Wang Q, Dong Q, Wei Q. Sol-Gel Synthesis of Carbon Xerogel-ZnO Composite for Detection of Catechol. Materials. 2016; 9(4):282. https://doi.org/10.3390/ma9040282
Chicago/Turabian StyleLi, Dawei, Jun Zang, Jin Zhang, Kelong Ao, Qingqing Wang, Quanfeng Dong, and Qufu Wei. 2016. "Sol-Gel Synthesis of Carbon Xerogel-ZnO Composite for Detection of Catechol" Materials 9, no. 4: 282. https://doi.org/10.3390/ma9040282