Table 2.
Performance of non-enzymatic glucose and H2O2 electrochemical sensors based on metal oxide nanocomposites.
| Electrode Material | Analytes | Sensitivity (uA·mM−1·cm−2) |
Linear Range (μM–mM) |
Detection Limit (μM) |
Working Potential (V) |
Stability (30 Days) |
Repeatability (RSD %) |
Reproducibility (RSD %) |
Real-Time Application | Ref |
|---|---|---|---|---|---|---|---|---|---|---|
| CuO nanoflowers/GCE | Glucose | 1086.34 | 1 to 2.79 | 0.12 | 0.5 | 85.40 | 1.37 | 4.28 | Urine | [63] |
| H2O2 | 956.69 | 5 to 14.07 | 0.85 | −0.4 | 89.77 | 2.69 | 5.38 | Milk | ||
| CuO-Tyr Modified electrode | Glucose | 9.02 | 900 to 16 | 20 | 0.60 | 97 | - | 2.5 | - | [64] |
| H2O2 | 2.72 | 100 to 36 | 2 | −0.25 | - | - | - | - | ||
| CuO/PANI/GCE | Glucose | - | 1 to 9.899 | 0.45 | 0.3 | - | - | - | - | [65] |
| H2O2 | - | 5 to 9.255 | 0.11 | −0.2 | - | - | - | - | ||
| CuO nanorods/FTO | Glucose | 1319 | 5 to 0.825 | - | 0.55 | 80 | - | - | - | [66] |
| H2O2 | 84.89 | 250 to 18.75 | - | −0.5 | 70 | - | - | - | ||
| Porous CuO/GCE | Glucose | −70.8 | 1.5 to 0.5 | 0.8 | 0.60 | 88.6 (21 days) | - | - | - | [67] |
| H2O2 | 50.6 | 5 to 1.5 | 1.5 | −0.20 | 87 (21 days) | - | - | - | ||
| Cu2O/GCE | Glucose | - | 50 to 1.1 | 47.2 | 0.50 | - | - | - | - | [68] |
| H2O2 | 3.693 | - | 0.039 | −0.20 | - | - | - | - | ||
| MCHNs/GCE | Glucose | 52.5 | 1 to 1.7 | 0.87 | 0.6 | - | - | - | - | [69] |
| H2O2 | 156.6 | 2 to 0.15 | 1.03 | −0.3 | - | - | - | - | ||
| Cu2O/GNs | Glucose | 0.285 | 300 to 3.3 | 3.3 | 0.60 | - | - | - | - | [70] |
| H2O2 | - | 300 to 7.8 | 20.8 | −0.40 | - | - | - | - | ||
| CQDs/octahedral Cu2O/GCE | Glucose | 0.298 | 20 to 4.3 | 8.4 | 0.60 | High stability | - | - | Human serum | [71] |
| H2O2 | 0.13 | 5 to 5.3 | 2.8 | −0.2 | High stability | - | - | - | ||
| Cu2OMS–RGO/GCE | Glucose | - | 1 to 0.419 | 0.73 | 0.6 | 87.6 | - | - | - | [72] |
| H2O2 | - | 50 to 2.775 | 10.8 | −0.24 | 89 | - | - | - | ||
| Cu2O PLNWs/Cu foam | Glucose | 6680.7 | 1 to 1.8 | 0.67 | 0.5 | 98.9 (7 days) | 4.61 | 2.57 | - | [38] |
| H2O2 | 1477.3 | 5 to 1.77 | 0.13 | −0.3 | 98.4 (7 days) | 0.59 | 1.28 | - | ||
| Co3O4 NPs/GCE | Glucose | 520.7 | 5 to 0.8 | 0.13 | 0.59 | - | - | - | Human serum | [73] |
| H2O2 | 107.4 | - | 0.81 | +0.42 | - | - | - | Disinfectant | ||
| GF/Co3O4-NPs | Glucose | 13.52 | 500 to 16.5 | 50.0 | −0.55 | 89 (9 days) | 3.9 | 3.7 | - | [74] |
| H2O2 | 1.14 | 0.2 to 0.211 | 0.06 | −0.48 | 97.3 (9 h) | 3.2 | 2.2 | - | ||
| ITO/NiO | Glucose | 1013.76 | 2 to 0.29 | 4.6 | 0.5 | 80 (15 days) | - | 3 | Human serum | [75] |
| H2O2 | 82.73 | 10 to 0.87 | 5.2 | −0.46 | 90 (15 days) | - | 3.5 | - | ||
| Ni(OH)2/ERGO-MWCNTs/GCE | Glucose | 2042 | 1 to 1.5 | 2.7 | 0.54 | 5.9 | 2.8 | Urine | [76] | |
| H2O2 | 711 | 20 to 9.05 | 4.0 | 0.2 | 6.1 | 2.8 | Milk |