Open AccessNew modified mesoporous silica nanoparticles with bimetallic Ni-Zr for electroanalytical detection of dopamine
Author(s) -
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-Hamıd,
Aireen Aina Bahari
Publication year - 2022
Publication title -
journal of electrochemical science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.236
H-Index - 6
ISSN - 1847-9286
DOI - 10.5599/jese.1200
Subject(s) - materials science , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , detection limit , mesoporous silica , nuclear chemistry , transmission electron microscopy , bimetallic strip , mesoporous material , nanomaterials , nanoparticle , electrochemical gas sensor , cubic zirconia , analytical chemistry (journal) , chemistry , chemical engineering , electrode , electrochemistry , nanotechnology , chromatography , metal , catalysis , organic chemistry , ceramic , composite material , engineering , metallurgy
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 concentration 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.