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Functional Paper-Based Platform for Rapid Capture and Detection of CeO2 Nanoparticles.

Ali Othman1, Daniel Andreescu1, Dinusha P Karunaratne1

  • 1Department of Chemistry and Biomolecular Science, ‡Department of Chemical and Biomolecular Engineering, and §Center for Advanced Materials Processing, Clarkson University , Potsdam, New York 13699, United States.

ACS Applied Materials & Interfaces
|March 25, 2017
PubMed
Summary

Researchers developed a novel ligand-graft platform for capturing and detecting cerium oxide nanoparticles (NPs). This technology aids in environmental and occupational exposure studies by enabling rapid NP assessment in various samples.

Keywords:
functional membranesligand graftedmetal oxidemultivalent bindingnanoparticle tracking

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Area of Science:

  • Nanotechnology
  • Environmental Science
  • Analytical Chemistry

Background:

  • Growing need for systems to capture, sequester, and track nanoparticles (NPs) in environmental and health research.
  • Existing methods lack efficient tools for evaluating NP concentration, distribution, and effects in diverse exposure scenarios.
  • Importance of developing reliable detection and separation technologies for nanoparticles.

Purpose of the Study:

  • To introduce the first ligand-graft multifunctional platform for the capture and detection of cerium oxide (CeO2) nanoparticles.
  • To demonstrate the efficacy of this platform for rapid NP assessment in industrial and environmental samples.
  • To lay the groundwork for advanced NP separation and measurement devices.

Main Methods:

  • Fabrication of paper-based and microarray platforms functionalized with redox-active ligands (catechol or ascorbic acid).
  • Utilized o-dihydroxy functionality for multivalent binding and charge transfer complex formation with CeO2 NPs.
  • Characterized surface modification using infrared spectroscopy, electron microscopy, X-ray spectroscopy, and thermogravimetric analysis.

Main Results:

  • Successfully developed and fabricated ligand-graft platforms capable of capturing cerium oxide nanoparticles.
  • Demonstrated the platform's functionality for rapid assessment of NPs in chemical mechanical planarization (CMP) slurries.
  • Confirmed the ability to detect NPs in CMP wastewaters, showcasing practical application potential.

Conclusions:

  • The developed ligand-graft platform represents a novel approach for NP capture and detection.
  • This strategy enables efficient retention and separation of nanoparticles, applicable to environmental monitoring.
  • The technology holds promise for the development of advanced measurement tools for NP detection across various settings.