Journal of Inorganic Materials, Volume. 34, Issue 2, 152(2019)
Rice-like CuO Chemically Modified Electrode: Preparation and Detection for Glucose
Figures & Tables(7)
. Schematic diagram of the CuO and CME preparation process (a), and XRD patterns of CuO (b) and SEM images of CuO (c-d)
. CV curves of different CMEs in blank and samples (a), EIS curves of the different CuO/Nafion-CMEs in 0.5 mol/L KCl solution and 10 mmol/L K3Fe(CN)6/K4Fe(CN)6 (b, c) with inset showing the equivalent circuit diagram, and the relationship between the electron transfer resistance (R ct) and the CuO modified amount (d)
. LSV curves of the different CuO/Nafion-CMEs in sample solution (a) and relationship between the peak current, the peak potential and the CuO modified amount (b)
. CV curves of the S electrode in detection solution at different scan rates (a) and relationship between the oxidation peak current and the scan rate (b)
. I-t curves of the S electrode in blank solution with continuous dropping glucose (a), the relationship between the response current and the glucose concentration (b), the results of anti-interference experiments (c), and the stability experiments (d)
Table 1. Comparison of detection performances of the S electrode and those non-enzymatic glucose sensors reported elsewhere
View tableView in ArticleTable 1. Comparison of detection performances of the S electrode and those non-enzymatic glucose sensors reported elsewhere
Electrode materials Linear range/(mmol·L-1) Sensitivity/(μA·L·mmol-1·cm-2) Detection limit/ (μmol·L-1) Ref. Flower-structured CuO 0.01-0.20 1830 8 [5] Microspheres-structured CuO 0.001-4.000 349.6 0.50 [8] Microflowers-structured CuO 0.05-3.00 383 10 [10] Sandwich-structured CuO 0-3.2 5342.8 1.0 [14] Microspheres-structured CuO 2-9 26.59 20.6 [22] Cob-like CuO 0.005-1.600 726.9 2 [23] Peony-like CuO 0.001-4.000 1322 0.5 [24] Rice-like CuO 0.0357-2.3610 950.36 0.0647 This work
Table 2. Data of recovery experiments of the S electrode for glucose
View tableView in ArticleTable 2. Data of recovery experiments of the S electrode for glucose
Samples Detected/(mmol·L-1) Added/(mmol·L-1) Found/(mmol·L-1) Recovery/% RSD/(%, n=5) 1 0.893 0.200 1.088 97.50 1.9 2 0.893 0.400 1.279 96.50 2.3 3 0.893 0.600 1.482 98.17 1.5 4 0.893 0.800 1.672 97.38 2.5
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Min DENG, Qi JIANG, Zhi-Hong DUAN, Qing-Qing LIU, Li JIANG, Xiao-Ying LU, [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Rice-like CuO Chemically Modified Electrode: Preparation and Detection for Glucose[J]. Journal of Inorganic Materials, 2019, 34(2): 152
Paper Information
Category: Research Articles
Received: Apr. 27, 2018
Accepted: --
Published Online: Sep. 24, 2021
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