Gold Nanoparticles-electrochemically Reduced Graphene Oxide/Poly(indole-5-carboxylic acid) Nanocomposite for Electrochemical Non-enzymatic Sensing of Hydrogen Peroxide

AYDOĞDU TIĞ G., ZEYBEK B.

ELECTROANALYSIS, cilt.35, sa.2, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 2
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1002/elan.202200064
  • Dergi Adı: ELECTROANALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, BIOSIS, Chemical Abstracts Core, Chimica, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: hydrogen peroxide, gold nanoparticles, chronoamperometry, poly(indole-5-carboxylic acid), electrochemically reduced graphene oxide, POLY INDOLE-5-CARBOXYLIC ACID, ONE-POT SYNTHESIS, OXIDE, SENSOR, H2O2, CONSTRUCTION, FABRICATION, COMPOSITE, SILVER, ELECTRODE
  • Ankara Üniversitesi Adresli: Evet

Özet

Herein, co-electrodeposition of AuNPs and ERGO onto GCE was conducted to prepare the modified electrode, GCE/AuNPs-ERGO. The poly(indole-5-carboxylic acid) (P(In-5-COOH) was then coated onto the GCE/AuNPs-ERGO with the help of electropolymerization. FT-IR, FE-SEM and EDX, and XRD techniques were employed to characterize the prepared nanocomposite. The nanocomposite modified electrode (GCE/AuNPs-ERGO/P(In-5-COOH)) was examined for the electrochemical reduction of H2O2 using chronoamperometry. A high reduction current for H2O2 was observed due to the synergistic effect between AuNPs-ERGO and P(In-5-COOH). The proposed sensor demonstrated a wide linear range of 0.025-750 mu mol L-1, with a LOD of 0.008 mu mol L-1 at -0.4 V. Furthermore, the developed sensor was applied for the detection of H2O2 in fetal bovine serum and urine samples.