Large quantities of hydrogen gas are consumed daily by the petroleum industry, chemical processes such as production of ammonia, methanol, and fatty acids. The hydrogen economy has an important environmental appeal, which brings the use of this gas as an energy source, since its burning is free of the releasing gases from combustion engines exhaust. One of the main issues related to the use of hydrogen is the form of its production with a high degree of purity. Among various methods to purify the hydrogen from the reforming process, preferential oxidation of CO with O2 (CO-PROX) is a simple, efficient and economically viable process, which involves catalysts. Considering the catalytic properties that the anisotropic nanomaterials offer, this project will aim to prepare, through one-pot synthesis, Pt nanoparticles with controlled morphologies, directly supported in CeO2, TiO2 and carbon, without any use of stabilizers or anchoring agents. For morphological control of the metallic nanoparticles, only salts of halides will be used, easily removed with a simple wash with water at the end of the synthesis. Size, composition and morphology of the obtained materials will be physicochemically characterized and will be subsequently employed for the catalytic function. The success of this project will contribute to the development of materials that are more active and selective for the reactions of CO-PROX and electro-oxidation of hydrogen contaminated with CO in electrochemical systems.
News published in Agência FAPESP Newsletter about the scholarship: