1. Iridium oxide (IV) nanoparticle-based electrocatalytic detection of PBDE
- Author
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Daniel Quesada-González, Alfredo de la Escosura-Muñiz, Alessandra Baiocco, Andrea A. Martos, Giuseppe Palleschi, Arben Merkoçi, Universidad Autónoma de Barcelona, European Commission, Generalitat de Catalunya, Ministerio de Ciencia, Innovación y Universidades (España), and Ministerio de Economía y Competitividad (España)
- Subjects
endocrine system ,PBDEs ,Polybrominated Biphenyls ,Biomedical Engineering ,Biophysics ,Nanoparticle ,02 engineering and technology ,Biosensing Techniques ,Electrocatalyst ,Iridium ,01 natural sciences ,Redox ,Flame retardants ,Catalysis ,Polybrominated diphenyl ethers ,Electrochemistry ,Halogenated Diphenyl Ethers ,Humans ,reproductive and urinary physiology ,Flame Retardants ,Detection limit ,Chemistry ,010401 analytical chemistry ,technology, industry, and agriculture ,Water ,General Medicine ,021001 nanoscience & nanotechnology ,Iridium oxide nanoparticles ,Carbon ,0104 chemical sciences ,Distilled water ,Environmental chemistry ,Screen printed carbon electrodes ,Nanoparticles ,0210 nano-technology ,Electrocatalysis ,Biosensor ,Biotechnology ,Environmental Monitoring - Abstract
Polybrominated diphenyl ethers (PBDEs) are a type of flame retardants which are currently banned in EU and USA due their hazardousness for humans and mammals. However, these compounds were highly used during more than 30 years and still persist in the environment since they are resistant to degradation. Herein we present a biosensor for the detection of PBDEs using screen printed carbon electrodes (SPCEs) based on the electrochemical monitoring of water oxidation reaction (WOR) catalyzed by iridium oxide (IV) nanoparticles (IrO2 NPs). Our assay shows a limit of detection of 21.5 ppb of PBDE in distilled water. We believe that such an IrO2 NPs-based electrocatalytic sensing system can lead to a rapid, sensitive, low cost and miniaturizable device for the detection of PBDEs., We acknowledge support from EU (FP7, SMS project) and MINECO (Spain) MAT2017-87202-P. This work is also funded by the CERCA Programme/Generalitat de Catalunya. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant no. SEV-2013-0295). Daniel Quesada-González also acknowledges Autonomous University of Barcelona (UAB) for the possibility of performing this work inside the framework of Chemistry PhD Programme.
- Published
- 2018