Biohybrid materials (kaolinite-amino acid) as luminescent sensors for emerging pollutants

• Grant number: 17/01719-0
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): July 01, 2018
• Effective date (End): January 18, 2022
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal researcher: Emerson Henrique de Faria
• Grantee: Denis Talarico de Araujo
• Home Institution: Pró-Reitoria Adjunta de Pesquisa e Pós-Graduação. Universidade de Franca (UNIFRAN). Franca , SP, Brazil
• Associated scholarship(s): 18/26569-3 - Biohybrid materials (kaolinite-amino acids) as luminescent sensors for organic emmerging pollutants., BE.EP.DR

Abstract

Brazil is a country that has the largest freshwater reserve in the world, because it is so privileged on the amount of water, so great is also the responsibility of the maintenance and care on the rivers, lakes and springs. In contrast, contamination of rivers and springs due to increased industrial activities and neglect of environmental policies has been one of the major problems of modern society. And the situation is worsening about the emerging pollutants, arising from increased consumption of cosmetics, medicines and cleaning supplies that are dumped into rivers through sewage, due to the lack of research and specific sensors for this class of pollutants further damaging the biome and human health. In the context presented, the aim of this work is to obtain luminescent sensors for emerging pollutants such as hormones, caffeine and metallic compounds, from biohybrid materials derived from clay mineral (kaolinite) modified with amino acids through the functionalization method of a modified alkoxide in the kaolinite. The choice of these materials is due to the potential of kaolinite application, its abundance and its low cost having its properties improved or increased by its modification with organic molecules, in this case the amino acids that are also low cost, biodegradable and multifunctional material. The sensor will be synthesized by the complexation of the material obtained with the lanthanide ion, which presents high intensities and lifetimes in the emissions, suffering little influence of the chemical environment, which increases its selectivity, making it very attractive for application in luminescent sensors of contaminants. (AU)

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)

DE ARAUJO, DENIS T.; CIUFFI, KATIA J.; NASSAR, EDUARDO J.; VICENTE, MIGUEL A.; TRUJILLANO, RAQUEL; RIVES, VICENTE; BERNAL, ELENA P.; DE FARIA, EMERSON H. Grafting of L-proline and L-phenylalanine amino acids on kaolinite through synthesis catalyzed by boric acid. APPLIED SURFACE SCIENCE ADVANCES, v. 4, JUN 1 2021. Web of Science Citations: 0.