High-throughput fabrication of carbonized electrospun polyacrylonitrile/poly(acrylic acid) nanofibers with additives for enhanced electrochemical sensing

Huey Ling Tan, Maria Kana Sanira Putri, Siti Shawalliah Idris, Niklas Hartikainen, Noor Fitrah Abu Bakar, Antonios Keirouz, Norbert Radacsi

Research output: Contribution to journalArticlepeer-review

15 Citations (SciVal)

Abstract

Lightweight, polyacrylonitrile-derived electrodes with different additives were fabricated using high-throughput nozzle-free electrospinning. The electrospun precursor nanofibers (PNFs) containing iron oxide, gold nanoparticles, or reduced graphene oxide (rGO) were subjected to oxidative stabilization and carbonization to obtain a carbon-rich conductive nanofiber structure. Scanning electron microscopy showed that the carbon nanofibers contracted between 11 and 55% while the Fourier-transform infrared spectroscopy confirmed that the carbon nanofibers were thermally stable. Thermogravimetric and differential scanning calorimetry results revealed that the cross-linking of the chain molecules and cyclization were completed. Next, cyclic voltammetry results indicated that the electroactivity of the modified screen-printed carbon electrodes was decreased by 85% due to the presence of carbon glue. The modified device presented significant enhanced electrochemical responses with the inclusions of nanoparticles, with rGO showing a 2.13 times higher electroactive surface area, followed by iron oxide (two times) and gold nanoparticles (1.37 times) than the equivalent PNFs.

Original languageEnglish
Article number49341
JournalJournal of Applied Polymer Science
Volume137
Issue number43
Early online date26 Apr 2020
DOIs
Publication statusPublished - 15 Nov 2020

Bibliographical note

Funding Information:
The authors would like to acknowledge the School of Engineering from the University of Edinburgh for the funding through the McCann Prize (grant number: 100-IRMI/INT 16/6/2 [010/2017]). The authors would further wish to thank the Universiti Teknologi MARA for the support and some of scientific equipment used in this study. The authors also would like to thank Ignacio Tudela, Francisco Javier Diaz Sanchez, and Andreas Tsiamis for their help with the electrochemical analysis. Finally, the authors would also like to thank Fergus Dingwall, Daniel Wilhelm, Ahmad Deedat Shafiei, and Noor Hafizah Tahal@Tahar for the laboratory assistance.

Funding Information:
The authors would like to acknowledge the School of Engineering from the University of Edinburgh for the funding through the McCann Prize (grant number: 100‐IRMI/INT 16/6/2 [010/2017]). The authors would further wish to thank the Universiti Teknologi MARA for the support and some of scientific equipment used in this study. The authors also would like to thank Ignacio Tudela, Francisco Javier Diaz Sanchez, and Andreas Tsiamis for their help with the electrochemical analysis. Finally, the authors would also like to thank Fergus Dingwall, Daniel Wilhelm, Ahmad Deedat Shafiei, and Noor Hafizah Tahal@Tahar for the laboratory assistance.

Publisher Copyright:
© 2020 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • cyclic voltammetry
  • degradation
  • electroactive surface area
  • nanoparticles
  • nozzle-free electrospinning

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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