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Conducting polymers hydrogels with potential applications for removing heavy metals from water and soils

Grant number: 10/17511-0
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): February 01, 2011
Effective date (End): June 30, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Susana Inés Córdoba de Torresi
Grantee:Jadielson Lucas da Silva Antonio
Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:09/53199-3 - Molecular recognition and energy storage: fundamental studies concerning geometry, size and synthesis effects on the optimization of the chemical properties of electroactive materials, AP.TEM
Associated scholarship(s):13/08370-1 - Kinetics study of polypyrrole hydro-sponges swelling in different aqueous media using FTIR-ATR technique, BE.EP.DD


Delivery systems are increasingly being explored in the literature. Such systems are based on controlling the release kinetics of a substance in a strategic way. Its functionality has been applied to both medical and environmental purposes. Overwhelmingly, the controlled release systems are comprised of polymeric networks. The of Electroactive Materials Laboratory at the Institute of Chemistry, University of São Paulo (USP) has been devoted to the synthesis and characterization of semi-interpenetrating networks of hydrogels and conducting polymers as potential materials for application in controlled drug delivery. These semi-interpenetrating networks are based on the electrochemical synthesis of conducting polymer of linear structure in a three-dimensional polymer network hydrogel. An important feature of this system is its operation as "artificial muscle" involving the application of an electric potential. In a recent synthesis has been shown that one can easily join the properties of conducting polymers and hydrogels in a single material. This became known as hydro-sponge and there were reports in the literature about its application in controlled release systems. One environmental problem that presents a potential risk to human health is contamination of water by heavy metals. Systems more efficient to remove these metals in water are necessary. A powerful complexing agent used to immobilize heavy metals is ethylenediaminetetraacetic acid (EDTA). Taking into account all aspects mentioned above, the objective of this project is to elaborate a system On/Off of hidro-esponja/EDTA for controlled release and absorption of EDTA in waters contaminated with heavy metals. It is hoped that this system has high capability to be applied in the removal of heavy metals in surface waters and soils. (AU)

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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)
ANTONIO, JADIELSON L.; HOFLER, LAJOS; LINDFORS, TOM; CORDOBA DE TORRESI, SUSANA I.. Electrocontrolled Swelling and Water Uptake of a Three-Dimensional Conducting Polypyrrole Hydrogel. CHEMELECTROCHEM, v. 3, n. 12, p. 2146-2152, . (13/08370-1, 10/17511-0)
ANTONIO, JADIELSON L. S.; LIRA, LUIZ M.; GONCALES, VINICIUS R.; CORDOBA DE TORRESI, SUSANA I.. Fully conducting hydro-sponges with electro-swelling properties tuned by synthetic parameters. Electrochimica Acta, v. 101, n. SI, p. 216-224, . (11/15159-0, 10/17511-0)
ANTONIO, JADIELSON L. S.; MARTINS, VITOR L.; CORDOBA DE TORRESI, I, SUSANA; TORRESI, ROBERTO M.. QCM-D study of electrochemical synthesis of 3D polypyrrole thin films for negative electrodes in supercapacitors. Electrochimica Acta, v. 324, . (13/22748-7, 10/17511-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ANTONIO, Jadielson Lucas da Silva. Synhesis and caracterization of conducting polymers hydro-sponges. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ) São Paulo.

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