New modified mesoporous silica nanoparticles with bimetallic Ni-Zr for electroanalytical detection of dopamine

Mohamad Rafizie Aiman Mohamed Roduan, Mohamad Idris Saidin*, Siti Munirah Sidik, Jaafar Abdullah, Illyas Md Isa, Norhayati Hashim, Mohamad Syahrizal Ahmad, Siti Nur Akmar Mohd Yazid, Anwar Ul-Hamid, Aireen Aina Bahari

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this research, bimetallic nickel-zirconia supported on mesoporous nanoparticles (Ni-Zr/MSN) were successfully synthesized by a simple in situ electrolysis method. Ni-Zr/MSN were well-characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) analyzer, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). Ni-Zr/MSN were then cast onto a modified glassy carbon electrode (Ni-Zr/MSN/GCE) as dopamine (DA) sensor. Under optimal conditions, the sensor showed a linear concen-tration relationship in the range of 0.3 µM–0.1 mM with a limit of detection of 0.13 µM. The relative standard deviation for 0.1 mM DA solution was 2.1 % (n = 5). The presence of excess catechol, saccharose, glycine, lactose, uric acid, and Cr3+, Fe2+ and Na+ as interferents was negligible, except for uric acid in 10-fold excess. The analytical recovery of the sensor was successfully demonstrated by the determination of DA in DA-containing medicine and wastewater samples. The results presented herein provide new perspectives on Ni-Zr/MSN as a potential nanomaterial in the development of DA sensors.

Original languageEnglish
Pages (from-to)463-474
Number of pages12
JournalJournal of Electrochemical Science and Engineering
Volume12
Issue number3
DOIs
StatePublished - 13 Jun 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors; licensee IAPC, Zagreb, Croatia.

Keywords

  • 3,4-Dihydroxyphenethylamine
  • Porous material
  • electrochemical sensor
  • modified GC electrode
  • nickel-zirconia
  • silica nanoparticles

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Colloid and Surface Chemistry
  • Materials Chemistry
  • Electrochemistry

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