K-carrageenan/PVA/nano-eggshell biocomposite-based non-enzymatic electrochemical biosensor for low-level urea detection
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol.126, no.11, 2020 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 126 Issue: 11
- Publication Date: 2020
- Doi Number: 10.1007/s00339-020-03960-1
- Journal Name: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex
- Istanbul University Affiliated: Yes
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.