Luminescent hybrid materials based on natural clays as sensors for contaminants detection

• Grant number: 16/17039-5
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): October 01, 2016
• Effective date (End): September 30, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Emerson Henrique de Faria
• Grantee: Nathalia Paula Oliveira
• Home Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil

Abstract

Various areas of science and technology has shown interest in finding new applications for organic inorganic hybrid materials. The materials based on natural clays such as kaolinite, have been largely employed to obtain this class of materials by intercalation process and / or functionalization that could promotes the expansion of the layers resulting in new materials with functional properties. These materials could be used for the recognition and treatment of toxic chemical substances present in wastewater; it has become a big problem due to the increase of industrial activity. To this end, the present work aims to obtain a new luminescent hybrid nanomaterial applied for detection of emerging organic pollutants such as caffeine, aspirin and trimethoprim. The materials are obtained from organofunctionalization kaolinite with organosilane-3-aminopropyltriethoxysilane (APTES), to further study via immobilization of fluorescent dyes rhodamine-B and fluorescein. The materials will be characterized structural and morphological viewpoint by X ray powder diffraction, small angle X ray scattering, thermal analysis, chemical analysis, photoluminescence spectroscopy, cationic exchange capacity, specific surface area analysis, scanning electron microscopy, UV-VIS absorption spectroscopy.