This research topic focuses on the design and synthesis of nanoscale inorganic materials in order to study their interesting optical and catalytic properties. We are searching for efficient lanthanide-based nanophosphors for optoelectronic and biomedical applications (optical imaging, detection of tumors, etc). The group is mainly devoted to the study of nanostructured phosphors with special emphasis on those consisting of uniform nanoparticles. More recently, synthesis and studies of morphology-property relationship of hierarchical nanophosphors are of our special interest.
- de Oliveira, R. S., de Brito, B. S., Kulesza, J., Alves-Jr, S., & Barros, B. S. Tunable photoluminescence of nanostructured LaPO4:Eu3+/Tb3+ synthesized via a microwave-assisted ethylene glycol route. Ceramics International, 43 (2017), 8276 8283. https://doi.org/10.1016/j.ceramint.2017.03.160
- Barros, B. S., De Oliveira, R. S., Kulesza, J., Melo, V. R. M., Melo, D. M. A., & Alves, S. Reddish-orange Ca3-xAl2O6:xEu3+ nanophosphors: Fast synthesis and photophysical properties. Journal of Physics and Chemistry of Solids, 78 (2015), 90–94. https://doi.org/10.1016/j.jpcs.2014.11.012
Another central topic of this research is the development of oxide-based catalysts for steam methane reforming. In this process, methane is partially or fully oxidized to CO and CO2, respectively, with the simultaneous H2 production. The products of the reactions involved in such process are valuable as important chemicals for methanol production or energy important vectors. We are also interested in the preparation of bi-functional Ni–CaO–mayenite materials for enhanced steam methane reforming and simultaneous CO2 capture. We developed a very efficient, rapid, low-cost and time-saving route for the preparation of these bifunctional catalysts by microwave-assisted self-combustion method.
- Cesário, M. R., Barros, B. S., Courson, C, Melo, D. M. A., Kiennemann, A. Catalytic performances of Ni–CaO–mayenite in CO2 sorption enhanced steam methane reforming. Fuel Processing Technology, 131 (2015), 247–253. https://dx.doi.org/10.1016/j.fuproc.2014.11.028
- da Silveira, V.R., Melo, D.M.A. Barros, B.S., Ruiz, J.A.C., Alcazar, R.L.O. Nickel-based catalyst derived from NiO–Ce0.75Zr0.25O2 nanocrystalline composite: Effect of the synthetic route on the partial oxidation of methane. Ceramics International 42, (2016), 16084–16089. https://dx.doi.org/10.1016/j.ceramint.2016.07.119