Visible Light-Driven Pure Water Splitting by a Nature-Inspired Organic Semiconductor-Based System
Energy Institute · University College London
Abstract
For the first time, it is demonstrated that the robust organic semiconductor g-C3N4 can be integrated into a nature-inspired water splitting system, analogous to PSII and PSI in natural photosynthesis. Two parallel systems have been developed for overall water splitting under visible light involving graphitic carbon nitride with two different metal oxides, BiVO4 and WO3. Consequently, both hydrogen and oxygen can be evolved in an ideal ratio of 2:1, and evolution rates in both systems have been found to be dependent on pH, redox mediator concentration, and mass ratio between the two photocatalysts, leading to a stable and reproducible H2 and O2 evolution rate at 36 and 18 μmol h(-1) g(-1) from water over 14 h.…
Citation impact
- FWCI
- 18.11
- Percentile
- 100%
- References
- 17
Authors
4Topics & keywords
- Chemistry
- Water splitting
- Graphitic carbon nitride
- Photocatalysis
- Oxygen evolution
- Artificial photosynthesis
- Semiconductor
- Oxygen
- Clean water and sanitation