Integrated chemical systems based on carbon nanostructures supported in porous matrices: Correlations between the synthesis protocol, physicochemical properties and application in chromatography and electrochemistry.
The focus of this project is on the study of integrated chemical systems based on supported amorphous or graphitic carbon in mesoporous silicas aiming at the understanding of the correlations between the synthesis protocol, the nanostructure, physico-chemical characteristics and properties that have direct influence on the application of these materials specially in chromatography and electrochemistry. The materials will be synthesized from organofunctionalization of the silica matrices with different organic molecules, followed by a pirolisis process under special gases atmosphere in order to coat the matrices pores with carbon nanostructures. Matrices with different pore sizes and morphologies will be used, for example chromatographic silicas with disordered pores, silicas with hexagonal arranged cylindrical pores and silicas with cubic arrange spherical pores. These silica matrices will be functionalized with different types of di-hydroxy aromatic alkenes, aromatic heterocycles and linear alkanes molecules, in different concentrations and will be thermally treated at diverse temperatures and times under special gases atmosphere. Thus this project aims to contribute to the understanding of the manner in which the physicochemical properties of the carbon nanostrucutures dispersed in the surface of silica pores are affected by the synthesis protocol used and how these properties influence the performance of the final materials in chromatographic applications such as separation and detection of the components of mixtures containing different position benzenes molecules isomers, or in electrochemical devices for detection of metabolites and drugs. Finally, integrated chemical systems with hierarchical arrangement from carbon structures and nanostructures of semiconductor oxides or noble metal supported in mesoporous silicas will be studied.
News published in Agência FAPESP Newsletter about the scholarship: