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Detection of Perfluorooctanoic and Perfluorodecanoic Acids on a Graphene-Based Electrochemical Sensor Aided by Computational Simulations.
Shanbhag, Mahesh M; Shetti, Nagaraj P; Daouli, Ayoub; Nadagouda, Mallikarjuna N; Badawi, Michael; Aminabhavi, Tejraj M.
Afiliación
  • Shanbhag MM; Department of Chemistry, K.L.E. Institute of Technology, Hubballi, Karnataka 580 027, India.
  • Shetti NP; Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, Karnataka 580 031, India.
  • Daouli A; Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, Karnataka 580 031, India.
  • Nadagouda MN; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, Punjab 140413, India.
  • Badawi M; Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019, Université de Lorraine, Vandœuvre-lès-Nancy 54506, France.
  • Aminabhavi TM; Department of Mechanical and Materials Engineering, Wright State University, Dayton, Ohio 45435, United States.
Langmuir ; 2024 Feb 08.
Article en En | MEDLINE | ID: mdl-38331755
ABSTRACT
Perfluoroalkyl carboxylic acids (PFCAs) exhibit high chemical and thermal stability, rendering them versatile for various applications. However, their notable toxicity poses environmental and human health concerns. Detecting trace amounts of these chemicals is crucial to mitigate risks. Electrochemical sensors surpass traditional methods in sensitivity, selectivity, and cost-effectiveness. In this study, a graphene nanosheet-based sensor was developed for detecting perfluorooctanoic acid (PFOA) and perfluorodecanoic acid (PFDA). Using the Hummer method, graphene nanosheets were synthesized and characterized in terms of morphology, structural ordering, and surface topology. Ab initio molecular dynamics simulations determined the molecular interaction of per- and poly-fluoroalkyl substances (PFASs) with the sensor material. The sensor exhibited high sensitivity (50.75 µA·µM-1·cm-2 for PFOA and 29.58 µA·µM-1·cm-2 for PFDA) and low detection limits (10.4 nM for PFOA and 16.6 nM for PFDA) within the electrode dynamic linearity range of 0.05-500.0 µM (PFOA) and 0.08-500.0 µM (PFDA). Under optimal conditions, the sensor demonstrated excellent selectivity and recovery in testing for PFOA and PFDA in environmental samples, including spiked soil, water, spoiled vegetables, and fruit samples.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: Langmuir Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos