The research conducted in our group is devoted to the study of the interactions of semiconducting materials and metallic nanostructures with light. The investigations focus principally on photo-electrochemical properties of thin-layer semiconducting oxide electrodes, such as tungsten trioxide (WO3) or ferric oxide (Fe2O3) that are employed to split water or decompose contaminants present in water.
In both cases, the photo-electrolysis leads to the formation of hydrogen on the cathode of the cell. Thanks to the light absorption by the semiconducting electrodes, the photo-electrolysis takes place under bias voltages lower than the theoretical value for decomposition of water (1.23 V). The solar-to-chemical energy conversion efficiency relies critically on the composition and preparation method of the semiconducting electrodes; to unable the use of a significant part of the solar spectrum, the employed semiconductors have to have band gap energies in the range of 2 to 2.5 eV.
Enhanced water splitting at thin film tungsten trioxide photoanodesbearing plasmonic gold–polyoxometalate particles. R. Solarska, K. Bienkowski, S. Zoladek, A. Majcher, T. Stefaniuk, P. J. Kulesza, J. Augustynski, Angew. Chem. Int. Ed. 53 (2014) DOI: 10.1002/anie.201408374
Microwave-assisted nonaqueous synthesis of WO3 nanoparticles for crystallographically oriented photoanodes for water splitting. S. Hilaire, M. J. Süess, N. Kränzlin, K. Bieńkowski, R. Solarska, J. Augustyński, M. Niederberger, J. Mater. Chem. A 2, 20530 (2014)
Highly efficient water splitting by a dual-absorber tandem cell. J. Brillet, J-H. Yum, M. Cornuz, T. Hisatomi, R. Solarska, J. Augustyński, M. Graetzel, K. Sivula Nature Photonics 6, 824 (2012) cit. 77
Highly stable efficient visible-light driven water photoelectrolysis system using nanocrystalline WO3 photoanode and methane sulfonic acid electrolyte. R. Solarska, R. Jurczakowski, J. Augustyński Nanoscale 4, 1553 (2012) cit. 25
Silver nanoparticles-induced photocurrent enhancement at WO3 photoanodes. R.Solarska, A. Królikowska, J. Augustyński Angew. Chem. Int. Ed. 49, 7980 (2010) cit. 53
Crystallographically oriented Mesoporous WO3 films: Synthesis, characterization, and applications. C. Santato, M. Odziemkowski, M. Ulmann,and J. Augustyński J. Am. Chem. Soc. 123, 10639 (2001) cit: 518
Photoelectrochemical properties of nanostructured tungsten trioxide films. C. Santato, M. Ulmann and J. Augustyński J. Phys. Chem. B 105, 936 (2001) cit: 285
Highlight: Metal oxide photoanodes for solar hydrogen production. B. D. Alexander, P. J. Kulesza, I. Rutkowska, R. Solarska and J. Augustyński J. Mater. Chem. 18, 2298 (2008) (invited feature article) cit: 235
Photoelectrochemical oxidation of water at transparent ferric oxide film electrodes. C. Jorand Sartoretti, B. D. Alexander, R. Solarska, I. A. Rutkowska and J. Augustyński, R. Cerny J. Phys. Chem. B, 109, 13685 (2005) cit: 204