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Fabrication of Shape‐Controlled Palladium Nanoparticle‐Decorated Electrospun Polypyrrole/Polyacrylonitrile Nanofibers for Hydrogen Peroxide Coalescing Detection
Author(s) -
Kim Wooyoung,
Shin Dong Hoon,
Jun Jaemoon,
Kim Jae Hyun,
Jang Jyongsik
Publication year - 2017
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201700573
Subject(s) - polyacrylonitrile , polypyrrole , materials science , electrospinning , nanofiber , nanoparticle , hydrogen peroxide , chemical engineering , nanomaterials , electrochemistry , nanotechnology , polymerization , electrode , polymer , composite material , chemistry , organic chemistry , engineering
Shape‐controlled palladium nanoparticle‐decorated electrospun polypyrrole/polyacrylonitrile nanofibers (Pd_PPy/PAN NFs) are fabricated by electrospinning, vapor deposition polymerization (VDP), and electrodeposition. The electrospun PAN NFs are used as the framework for a composite nanomaterial. To make the material electrically conductive, the framework is coated with PPy by VDP. As‐prepared PPy/PAN NFs are used as the working electrode during electrodeposition of Pd. During Pd introduction, the presence of sulfuric acid in the electrolyte influences the shape of the Pd nanoparticles. Sulfate ions prevent the growth of the Pd, resulting in nanoparticles with sharp features. The fabricated Pd_PPy/PAN NFs are then incorporated as the active element in an electrochemical hydrogen peroxide (H 2 O 2 ) biosensor. Tailoring the morphology of the Pd nanoparticles enables a minimum detectable limit of 1 × 10 −9 m H 2 O 2 , which is sufficiently low for monitoring diseases related to H 2 O 2 concentration, such as Parkinson's disease and Alzheimer's disease. The low detection limit is achieved by coalescing detection of Pd and PPy.