Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors.
AuthorsRodrigues, João M M
Farinha, Andreia S F
Cavaleiro, José A S
Tomé, Augusto C
Tome, Joao P C
KAUST DepartmentWater Desalination and Reuse Center (WDRC), Division of Biological and Environmental Sciences (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
Permanent link to this recordhttp://hdl.handle.net/10754/667872
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AbstractAnionic species are one of the most common pollutants in residual and freshwaters. The presence of anthropogenic anions in water drastically increases the toxicity to living beings. Here, we report the preparation of a new optical active material based on tri(tosylamino)phthalocyanines grafted to ferromagnetic silica nanoparticles for anion detection and removal. The new unsymmetrical phthalocyanines (Pcs) proved to be excellent chemosensors for several anions (AcO-, Br-, Cl-, CN-, F-, H2PO4-, HSO4-, NO2-, NO3-, and OH-) in dimethyl sulfoxide (DMSO). Furthermore, the Pcs were grafted onto magnetic nanoparticles. The resulting novel hybrid material showed selectivity and sensitivity towards CN-, F-, and OH- anions in DMSO with limit of detection (LoD) of ≈4.0 µM. In water, the new hybrid chemosensor demonstrated selectivity and sensitivity for CN- and OH- anions with LoD of ≈0.2 µM. The new hybrids are easily recovered using a magnet, allowing recyclability and reusability, after acidic treatment, without losing the sensing proprieties.
CitationRodrigues, J. M. M., Farinha, A. S. F., Lin, Z., Cavaleiro, J. A. S., Tome, A. C., & Tome, J. P. C. (2021). Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors. Sensors, 21(5), 1632. doi:10.3390/s21051632
SponsorsThis project had funding for its development from QOPNA, LAQV-REQUIMTE, CICECO, and Centro de Química Estrutural (please see below). Thanks are due to the University of Aveiro, FCT/MCTES and European Union (COMPETE and FEDER programs) for the financial support to CICECO-Aveiro Institute of Materials (UIDB/50011/2020 and UIDP/50011/2020), LAQV-REQUIMTE (UIDB/50006/2020), QOPNA (FCT UID/QUI/00062/2019) and Centro de Química Estrutural (UIDB/00100/2020) research units, as well as to projects PTDC/CTM/101538/2008, PTDC/QEQ-QOR/6160/2014 and PTDC/QUI-QOR/30771/2017, through national funds and, when applicable, co-financed by FEDER–Operational Thematic Program for Competitiveness and Internationalization-COMPETE 2020, within the PT2020 Partnership Agreement.
Except where otherwise noted, this item's license is described as This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
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