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Updated: Jan 20, 2026

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Polarized Catalytic Polymer Nanofibers.

Dinesh Lolla1, Ahmed Abutaleb2, Marjan A Kashfipour3

  • 1Biosciences and Water Filtration Division, Parker-Hannifin Corporation, Oxnard, CA 93030, USA. dinesh.lolla@parker.com.

Materials (Basel, Switzerland)
|September 8, 2019
PubMed
Summary

Polarized polyvinylidene fluoride (PVDF) nanofibers enhanced with palladium nanoparticles show high efficiency in phenol hydrogenation. This catalytic support achieves over 95% phenol conversion to cyclohexanone with excellent selectivity.

Keywords:
PVDFcyclohexanoneelectrospinningheterogenous catalysisphenolpolarization

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Catalysis

Background:

  • Polyvinylidene fluoride (PVDF) nanofibers (NFs) exhibit enhanced beta-crystallization phase through spontaneous polarization.
  • Nanofibrous membranes supporting metallic nanoparticles (NPs) are crucial for filtration, catalysis, and industrial applications.
  • Optimizing PVDF NFs for catalytic applications requires understanding molecular and surface morphological changes.

Purpose of the Study:

  • To investigate the effectiveness of polarized PVDF nanofiber supports embedded with palladium (Pd) nanoparticles for phenol hydrogenation.
  • To analyze the impact of polarization treatment on PVDF NFs' molecular structure and surface morphology.
  • To evaluate the catalytic performance in terms of phenol conversion and cyclohexanone selectivity.

Main Methods:

  • Fabrication of PVDF nanofibers with ~200 nm diameters.
  • Embedding agglomerated palladium nanoparticles (5-50 nm) onto PVDF NFs.
  • Polarization treatment of PVDF NFs, including heating to their curie temperature (150 °C).
  • Characterization using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM), Energy Dispersive X-Ray Spectroscopy (EDX), and Fourier Transform Infrared Spectroscopy (FTIR).
  • Testing catalytic activity in phenol hydrogenation.

Main Results:

  • Polarization treatment induced molecular and surface morphological changes in PVDF NFs.
  • Heating to the curie temperature increased catalytic activity but decreased selectivity, producing cyclohexanol byproduct.
  • The polarized PVDF nanofiber support achieved over 95% phenol conversion with excellent cyclohexanone selectivity within nine hours.

Conclusions:

  • Polarized PVDF nanofibers with embedded Pd nanoparticles serve as highly effective catalytic supports.
  • The study demonstrates a promising method for enhancing catalytic performance in hydrogenation reactions.
  • Optimized PVDF NFs offer a reliable platform for advanced catalytic applications.