ZnO Nanosheets-Decorated ERGO Layers: An Efficient Electrochemical Sensor for Non-Enzymatic Uric Acid Detection

Eryigit M., Urhan B. K., ÖZTÜRK DOĞAN H., ÖZNÜLÜER ÖZER T., Demir U.

IEEE SENSORS JOURNAL, cilt.22, sa.6, ss.5555-5561, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 22 Sayı: 6
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1109/jsen.2022.3150088
  • Dergi Adı: IEEE SENSORS JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.5555-5561
  • Anahtar Kelimeler: Electrodes, Zinc oxide, II-VI semiconductor materials, Sensors, Indium tin oxide, Graphene, Biosensors, Co-electrodeposition, electroreduced graphene oxide, uric acid sensor, ZnO nanosheets, REDUCED GRAPHENE OXIDE, GLASSY-CARBON ELECTRODE, ASCORBIC-ACID, DOPAMINE, NANOCOMPOSITE, NANOPARTICLES, FABRICATION, BIOSENSORS, FACILE
  • Atatürk Üniversitesi Adresli: Evet

Özet

Electrochemically reduced graphene oxide/zinc oxide (ERGO/ZnO) nanocomposite was simultaneously co-electrodeposited based on a one-step electrodeposition approach at room temperature on an indium tin oxide (ITO) electrode from an aqueous solution without using specific reducing agents. The electrochemical fabricated ITO-ERGO/ZnO electrode was characterized using field emission scanning electron microscopy (FESEM), X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and electrochemical impedance spectroscopy (EIS) techniques. The biosensor properties of the ITO-ERGO/ZnO electrodes were investigated in terms of their response toward uric acid (UA) sensing via enzyme-free amperometry. The linear current response for UA on the ITO-ERGO/ZnO electrode in the concentration range of 1-400 mu M with a sensitivity of 150.7 mu A cm(-2) mM(-1) was obtained. The main advantage of the ITO-ERGO/ZnO electrode was a relatively low detection limit for estimating UA, high selectivity, good repeatability, and long-term stability. In addition, the fabrication procedure of the designed biosensor was straightforward, practicable, and inexpensive.