A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on a Polypyrrole Nanowire-Copper Nanocomposite Modified Gold Electrode
Abstract
:1. Introduction
2. Results and Discussion
2.1 Characterization of Electrode Surface
2.2 Electrochemical Characterization of the Modified Electrode
2.3 Influence of Potential on Sensor Response
2.4 Optimization of the Concentration of NaOH for the Sensor
2.5 The Sensor Response to Hydrogen Peroxide
2.6 Stability of the Hydrogen Peroxide Sensor
2.7 Selectivity of the Hydrogen Peroxide Sensor
2.8 Recovery Experiment
3. Experimental Section
3.1 Reagents
3.2 Apparatus and Chemicals
3.3 The modification of the Electrode
4. Conclusions
Acknowledgments
References and Notes
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Interfering reagent | Current ratioa,b |
---|---|
glucose | 1.02 |
glycine | 1.01 |
ethanol | 1.01 |
acetic acid | 0.99 |
l-cysteine | 0.96 |
Sample H2O2 (mmol L-1) | Added H2O2 (mmol L-1) | Detected H2O2 (mmol L-1) | Recovery (%) |
---|---|---|---|
0.08 | 0.024 | 0.106 | 101.9 |
0.4 | 0.35 | 0.726 | 96.8 |
1.2 | 0.4 | 1.68 | 105 |
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Zhang, T.; Yuan, R.; Chai, Y.; Li, W.; Ling, S. A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on a Polypyrrole Nanowire-Copper Nanocomposite Modified Gold Electrode. Sensors 2008, 8, 5141-5152. https://doi.org/10.3390/s8085141
Zhang T, Yuan R, Chai Y, Li W, Ling S. A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on a Polypyrrole Nanowire-Copper Nanocomposite Modified Gold Electrode. Sensors. 2008; 8(8):5141-5152. https://doi.org/10.3390/s8085141
Chicago/Turabian StyleZhang, Tingting, Ruo Yuan, Yaqin. Chai, Wenjuan Li, and Shujuan Ling. 2008. "A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on a Polypyrrole Nanowire-Copper Nanocomposite Modified Gold Electrode" Sensors 8, no. 8: 5141-5152. https://doi.org/10.3390/s8085141