Determination of chemical oxygen demand based on photoelectrocatalysis of nanoporous TiO2 electrodes

- Significant enhancement of the activity of nanoporous TiO2 via electrochemical reduction.
- Effective determination of COD based on photoelectrocatalysis of nanoporous TiO2.
- The proposed method has been validated with both synthetic and actual wastewater samples.
- The COD determination process is facile, rapid and environmental compatible.