K-carrageenan/PVA/nano-eggshell biocomposite-based non-enzymatic electrochemical biosensor for low-level urea detection


Tasaltin N., Aydin E., KARAKUŞ S., Kilislioglu A.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol.126, no.11, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 126 Issue: 11
  • Publication Date: 2020
  • Doi Number: 10.1007/s00339-020-03960-1
  • Title of Journal : APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING

Abstract

As a comprehensive survey on both health and biosensor technologies, in this study, a non-enzymatic electrochemical biosensor based on kappa-carrageenan/PVA/nano-eggshell (K-carrageenan/PVA/nano-eggshell) biocomposite was prepared to detect low-level urea in phosphate-buffered solution (PBS). Novel K-carrageenan/PVA/nano-eggshell biocomposite was prepared by ultrasonics sonochemistry. The electrochemical biosensor showed a sensitivity of 0.018 mu A mu M-1 cm(-2)in a linear range of [250-1000] mu M urea. Urea detection limit of the biosensor was 60 mu M at room temperature.