Multivalence Ce and Sn Oxide Doped Materials with Controlled Porosity for Renewable Energy Applications

Multivalence Ce and Sn oxide doped materials are of critical importance in many renewable energy applications, especially in a porous form. Of special interest is the understanding of the basic properties of Ce-Sn-O nanoparticles and the effect of doping with different trivalent (Fe3+, Yb3+, Gd3+) elements, as well as developing Ce-Sn-O materials in the form of homogeneous and heterogeneous multilayers with unique properties at high temperature. We discuss various applications of nanosize metal-oxide sensors and energy conservation through improved energy efficiency such as renewable sources and fuel cells. In addition, ceria and ceria-based materials are studied for their electronic, magnetic, optical, and catalytic properties, which are important in applications such as gas sensors, heterogeneous catalysis, solid electrolyte fuel cells (SOFC), and UV-shielding application. Additionally, at the nanoscale, the surface area of metal oxide particles is dramatically increased, which not only increases oxygen exchange but also makes it easy for redox reactions.