Biosensing Efficiency of Nanocarbon-Reinforced Polyacrylonitrile Nanofibrous Matrices

Apetrei R., Guven N., ÇAMURLU P.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, cilt.169, sa.2, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 169 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1149/1945-7111/ac52ff
  • Dergi Adı: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Analytical Abstracts, Applied Science & Technology Source, Chimica, Compendex, Computer & Applied Sciences, INSPEC
  • Anahtar Kelimeler: carbon nanotubes, electrospun nanofibers, fullerene, glucose biosensors, graphene, polyacrylonitrile, MULTIWALLED CARBON NANOTUBES, GLUCOSE-OXIDASE, ELECTROSPUN NANOFIBERS, COMPOSITE NANOFIBERS, POLYMER NANOFIBERS, GRAPHENE-OXIDE, IMMOBILIZATION, FABRICATION, ENZYME, MEMBRANES
  • Akdeniz Üniversitesi Adresli: Evet

Özet

The reinforcement of polymer matrices with nanocarbon fillers is highly attractive for electrochemical biosensing (due to enhanced electrical conductivity). Further processing by electrospinning results in versatile nanofibrous mats. This study compares the biosensing performance of composite polyacrylonitrile nanofibers (PAN NFs) electrospun with different carbonaceous fillers (fullerene, carbon nanotubes, graphene). Morphological characterization of the composite NFs is performed by scanning electron microscopy (SEM) and correlated with the performance of the biosensing matrices. Glucose oxidase (GOD) is employed as model enzyme by immobilization through cross-linking. Optimum nanofiller content was evaluated at 2.0 wt%. for carboxyl functionalized-multiwall carbon nanotubes- NFs (highest sensitivity of 61.5 mAM(-1)cm(-2) and limit of detection (LOD) of 2.0 mu M), whilst reduced graphene oxide- NFs exhibited 49.3 mAM(-1)cm(-2) sensitivity with the lowest LOD of 1.6 mu M within the most extended linear range (up to 20 x 10(-3) M). Insignificant effect of interferent sugars led to real sample recovery close to 100%. (c) 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.