Semiconductor photoelectrodes for solar of splitting water

摘要

The production of hydrogen from water using solar light is very promising for generation of an ecologically pure energy carrier. Different types of TiO2 aerogels have been successfully synthesized and the sample with the highest BET surface area was morphologically characterized with the help of SEM measurements. A series of ZnO / TiO2 aerogels were prepared by the sol-gel method followed by supercritical drying. By varying the ZnO quantity (1-10%) and the nature of Zn precursors - zinc (II) nitrate hexahydrate and zinc (II) acetylacetonate, an extensive study has been performed. We try to extend the photoresponse by introducing defects into the TiO2 lattice by doping with transition metal ions Fe and Ni. Noble metals, in particular silver, has been used to increases the photocatalytic capacity of titania.