Integrated chemical systems based on carbon nanostructures supported in porous matrices: Correlations between the synthesis protocol, physicochemical properties and application in chromatography and electrochemistry.

• Grant number: 12/20511-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: April 01, 2013
• End date: May 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Italo Odone Mazali
• Grantee: Mathias Strauss
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 08/57867-8 - National Institute for Research, Development and Innovation in Functional Complex Materials, AP.TEM

Abstract

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.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

STRAUSS, MATHIAS; VITA DAMASCENO, JOAO PAULO; SIGOLI, FERNANDO APARECIDO; MAZALI, ITALO ODONE. Functionalization of Mesoporous Silicas as Strategy for Obtaining Nanocomposites with Controlled Graphitic Domains Quantity and Carbon Content. Journal of Nanoscience and Nanotechnology, v. 17, n. 4, p. 2804-2810, APR 2017. (12/20511-7, 13/24400-8)

MARTINEZ, DIEGO S. T.; DAMASCENO, JOAO PAULO V.; FRANQUI, LIDIANE S.; BETTINI, JEFFERSON; MAZALI, ITALO O.; STRAUSS, MATHIAS. Structural aspects of graphitic carbon modified SBA-15 mesoporous silica and biological interactions with red blood cells and plasma proteins. Materials Science & Engineering C-Materials for Biological Applications, v. 78, p. 141-150, SEP 1 2017. (13/24400-8, 12/20511-7)