Table 3.
Comparison of k0 standard electron rate constant for biochar/SPE and graphene/SPE sensors.
| k0 (cms−1) | |
|---|---|
| biochar/SPE | (2.3 ± 0.1) × 10−3 |
| graphene/SPE | (1.6 ± 0.1) × 10−3 |
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