|
Electrode composition
|
Charge-transfer resistance at the ZnO/electrolyte interface [Rk] (ohm)
|
Electron transport resistance in the ZnO network [Rw] (ohm)
|
Ratio of Rk to Rw
|
Mean electron lifetime (ms)
|
Electron diffusion coefficient in the photoanode (10-4 cm2 s-1×)
|
Effective electron diffusion length (micrometer)
|
|---|
|
ZnO
|
50.17
|
6.49
|
7.73
|
10.30
|
4.80
|
22.2
|
|
ZnO/0.01 wt% O-MWNT
|
27.15
|
1.39
|
19.53
|
6.85
|
18.25
|
35.4
|
|
ZnO/0.01 wt% acid-MWNT
|
41.56
|
3.62
|
11.48
|
8.00
|
9.18
|
27.1
|
- The thickness of the ZnO or ZnO/MWNT film was 8 μm.
