Comparison of the performance of the as-prepared ZnCo2O4 micro-rice sensor with other reported nonenzymatic glucose sensors.
| Electrode material | Potential (V vs. Ag/AgCl) | Linear range (mM) | Detection limit (μM) | Sensitivity (μA mM−1 cm−2) | Ref. |
|---|---|---|---|---|---|
| Cobalt oxide microspheres | +0.55 | 0.00083–8.61 | 0.46 | 669.78 | 45 |
| Porous CoOOH nanosheet arrays | +0.52 | 0.003–1.109 | 1.37 | 526.8 | 46 |
| CoOOH nanosheet arrays | +0.40 | 0.03–0.7 | 30.9 | 341.0 | 47 |
| Co3O4 porous film | +0.60 | Up to 3.0 | 1 | 366.03 | 48 |
| Co3O4 nanocrystals | +0.55 | 0.1–0.9 | 50 | 743.6 | 49 |
| Co3O4 nanowires | +0.20 | 0.001–1.2 | 0.265 | 45.8 | 50 |
| Nanoporous Co3O4 nanowires | +0.60 | 0.005–0.57 | 5 | 300.8 | 51 |
| Co3O4 nanofibers | +0.59 | Up to 2.04 | 0.97 | 36.25 | 52 |
| Co3O4/NiCo2O4 double-shelled nanocages@GO | +0.55 | 0.01–3.54 | 0.384 | 304 | 53 |
| Cobalt oxide NP/r-GO | +0.45 (vs. SCE) | 0.04–4 | 1.44 | 1.21 | 54 |
| CuOx–CoOx/graphene | +0.50 (vs. SCE) | 0.005–0.57 | 0.5 | 507 | 55 |
| Co nanobeads/rGO | +0.55 (vs. SCE) | 0.15–6.25 | 47.5 | 39.32 | 56 |
| Octahedral Cu2O | +0.60 | 0.3–4.1 | 128 | 241 | 57 |
| CuO microspheres | +0.45 (vs. SCE) | 0.001–4 | 0.5 | 349.6 | 58 |
| FeOOH nanowires | +0.40 (vs. SCE) | 0.015–3 | 15 | 12.13 (μA mM−1) | 59 |
| NiCo2O4 hollow nanorods | +0.60 | 0.0003–1 | 0.16 | 1685.1 | 60 |
| ZnCo2O4 microrice | +0.55 | 0.01–0.55 | 5 | 436.1 | This work |
| 0.55–2.65 | 215.1 |