Table 2 Comparison of characteristics of the H2O2 sensor based on ALD-developed Au-ZnO heterostructures with H2O2 sensors based on other nanomaterials and detection modes reported to date
Electrode material | Sensitivity (μA·μM−1·cm−2) | Linear range (μM) | LOD (μM) | Response time (s) | Refs |
|---|---|---|---|---|---|
Au-ZnO heterostructures | 0.53 | 1.0–120000 | 0.78 | ~ 2.0 | This work |
ZnO thin film | – | 10–110 | – | ~ 115 | [35] |
Co-doped ZnO nanoparticles | 92.44 | 5000–30000 | 14.3 | – | [28] |
Pt-ZnO nanotubes | – | 20–5000 | 1.5 | ~ 10 | [29] |
Cyt.c-ZnO nanosheets | 2.0 | 10–1000 | 0.8 | – | [30] |
Zno-Co3O4-NiCo2O4-Ni foam | 388 | 0.2–2400 | 0.1 | 20 | [31] |
AuNPs-ZnO-NTs | 1.34 | 1.0–3000 | 0.1 | ~ 15 | [32] |
Ag-ZnO nanoflower | 50.8 | 1.0–20 | 2.5 | – | [33] |
AgNPs-ZnO | 1.64 | 2–5500 | 0.42 | – | [34] |
Au NPs-ZnO NRs | 0.15 | 8–983 | 0.9 | – | [45] |
TRP (chemiluminescent) | – | 2.0–1000 | 2.0 | – | [36] |
KIO4/CO32− (chemiluminescent) | – | 2.7–600 | 2.7 | – | [37] |
C-dots/Fe2+/VB1 (fluorometric) | – | 0.5–450 | 0.074 | – | [39] |
Au@Ag NPs/C-dots (fluorometric) | 0.50–400 | 0.20 | – | [40] | |
GQDs/CuO (colorimetry) | – | 0.5–10 | 0.17 | – | [23] |
Fe3O4 MNPs (colorimetry) | – | 0.50–150 | 0.25 | – | [24] |
HPPtCuDs (colorimetry) | – | 0.3–325 | 0.1 | – | [25] |