A novel tool for the adsorption of dsDNA: Electrochemical reduction of Pd nanoparticles onto reduced-keratin particles extracted from wool wastes

KALKAN ERDOĞAN M., AYDOĞDU TIĞ G., SAÇAK M.

BIOELECTROCHEMISTRY, cilt.140, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 140
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.bioelechem.2021.107835
  • Dergi Adı: BIOELECTROCHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, MEDLINE, Veterinary Science Database
  • Anahtar Kelimeler: Waste wool fabric, Reduced-keratin particles, Pd nanoparticles, dsDNA adsorption, Electrochemical biosensor, PALLADIUM NANOPARTICLES, ASCORBIC-ACID, SENSOR, BIOSENSOR, DOPAMINE, BIOCOMPATIBILITY, SPECTROSCOPY, FABRICATION, COMPOSITE, FIBERS
  • Ankara Üniversitesi Adresli: Evet

Özet

This work outlines the fabrication of a novel electrochemical platform for the dsDNA adsorption, using one of the most sustainable materials, wool fabric waste, and Pd2+ ions. To develop a functional material with a significant adsorption capability, the waste wool was subjected to the chemical reduction process, and the keratin-SH (KerSH) particles were extracted in powder form. These particles were used in the adsorption of Pd2+ ions by monitoring with the UV-vis spectra. The dispersion of the KerSH-Pd2+ particles was subsequently drop-casted onto a glassy carbon electrode (GCE) and electrochemically reduced to the GCE/KerSH-PdNPs composite by chronoamperometry at -0.4 V for 500 s. It was found that the KerSH particles were self-assembled by revealing chemically attractive NH2 groups after the electrochemical PdNPs deposition. A GCE/KerSH-PdNPs composite was then employed in the electrochemical dsDNA detection by Differential Pulse Voltammetry (DPV), using the oxidation signals of guanine and adenine bases at 0.8 V and 1.2 V, respectively. Accordingly, relatively stable, repeatable, and reproducible dsDNA adsorption was ensured through the positively charged-NH2 groups of KerSH-PdNPs. This finding reveals the potential of textile waste for various electrochemical applications, such as DNA biosensors for environmental, pharmaceutical, and medicinal fields. (C) 2021 Elsevier B.V. All rights reserved.