Abstracts Book - IMRC 2018

• SC3-O002 Invited Talk
PULSE LASER ACTIVE TiO2-CoTiO3 CATALYSTS FOR ENERGY
APPLICATIONS
Francisco Robles Hernandez 1 , Mudit Singh 1 , Olga Idalú Pérez Ordóñez 2 , Fan Qin 3 , Viktor G.
Hadjiev 4 , Jiming Bao 3 , Daniel Gostovic 5
1
University of Houston, Department of Mechanical Engineering Technology, United States.
2 Centro de Investigación en Materiales Avanzados, S.C., Materiales Avanzados, Mexico.
3 University of Houston, Department of Electrical and Computer Engineering, United States.
4 University of Houston, Texas Center for Superconductivity, United States. 5 Thermo Fisher
Scientific, Materials & Structural Analysis, United States.
Here we present the results of highly doped titanias (TiO2) with up to 20at%
Co. The catalyst is mainly composed by TiO2 (rutile) substrates that support
CoTiO3 all inorganic perovskites. This material has by-crystal frameworks that
are active under sunlight conditions to degrade organic azo dyes (e.g. orange 7,
direct blue, etc). However, the main characteristic of this catalysts is its ability
for water splitting. This catalysts is not only sunlight active with and outstanding
hydrogen yield in the presence of infrared pulse laser, such as 1064
nm. Another puzzling behavior of this material is the fact that this laser does
not have the energy requirement to promote photocatalytic degradation. One
can expect that this unexpected activity is due to the presence of nanometric
structures, quantum dots, or quantum confinement effects; conversely, the
particles have sizes above 100 nm and in some cases they are
micrometric. Instead, we believe that the high activity of this material is
attributed to the interphases between the rutile and the perovskite that become
active under pulse laser radiation.
Keywords: Catalysis, Pulse Laser, Water Splitting
Presenting authors email: fcrobles@uh.edu