Research
Interface engineering for light-driven water oxidation: unravelling the passivating and catalytic mechanism in BiVO4 overlayers
Liu, G., Eichhorn, J., Jiang, C.-M., Scott, M., Hess, L., Gregoire, J., Haber, J., Sharp, I., Toma, F. Interface engineering for light-driven water oxidation: Unravelling the passivating and catalytic mechanism in BiVO4 overlayers. Sustainable Energy Fuels, DOI: 10.1039/C8SE00473K (2018).
Scientific Achievement
We synthesized (NiFeCoCe)Ox multi-functional coating on BiVO4 photoanodes that exhibit nearly 100% efficient surface collection of holes under oxygen evolving reaction conditions
Significance & impact
The complementary use of macroscopic photoelectrochemical measurements and nanoscale atomic force microscopy techniques provide foundational knowledge of interface engineering in integrated photoactive materials for solar fuel production
Research Details
We enhanced charge transport and collection of photogenerated holes at the BiVO4/catalyst interface
The (CoFeCe)Ox excels at efficient capture and transport photogenerated holes, and (NiFe)Ox at reducing charge recombination at the BiVO4/electrolyte interface
Contact: fmtoma@lbl.gov
Reprinted from Liu, G., Eichhorn, J., Jiang, C.-M., Scott, M., Hess, L., Gregoire, J., Haber, J., Sharp, I., Toma, F. Interface engineering for light-driven water oxidation: Unravelling the passivating and catalytic mechanism in BiVO4 overlayers. Sustainable Energy Fuels, DOI: 10.1039/C8SE00473K (2018)
Schematic illustration of integrated BiVO4/Co0.4Fe0.1Ce0.5Ox/Ni0.8Fe0.2Ox photoanode. Ni0.8Fe0.2Ox catalyst was deposited atop to utilize surface-reaching holes that were collected by Co0.4Fe0.1Ce0.5Ox overlayer from BiVO4 light absorber for water oxidation.