1. Christopher Carver Dr Klaus Hellgardt

4. Benefits Fossil fuel reliance Green house gases Abundant resources Durable & low maintenance Energy security Challenges InfrastructureStoragePerception

7. 240mm 210mm 70mm 100mm

8. 1.23 eV 0.6 eV 0.4 eV 0.1 eV Theoretical water decomposition energy E g = 2.3 eV Theoretical Overpotential Recombination

9.  Design flexible test-bed reactor -10 x 10cm photoanode -Photon absorption -Quantum efficiency -High mass transfer rate coefficients -Separate hydrogen and oxygen  Hydrogen production experiments -Semiconductor material -Electrode configuration

11. Good absorption Stable in alkali Recombination Stable in acid/alkali UV absorption only Good efficiency Stable in acid Fe 2 O 3 TiO 2 WO 3 titaniumPVDF

12. quartz

13. Butler-Volmer equation Current density (A/m 2 ) Overpotential (V) Kinetic control Transport control Increasing mass transport rate

19. PHOTOANODE quartz window membrane cathode electrolyte

20. Set Up Reactor Electrical connections Hydrogen extraction system Evaluate reactor design Experiments Semiconductors / electrolyte Electrode configurationMultiple electrodesTemperature Analyse Results Quantify H2 productionOptimise reactor design Deliver report

21. QUESTIONS?