@conference{
author = "Milovanović, Biljana and Petrović, Rada and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "Aluminum pillared montmorillonite-supported cobalt (Co/AP) has proven to be a suitable non-enzymatic
sensing material (Mudrinić, 2019). Beside low cost, Co/AP exhibited adequate electrocatalytic performance
toward glucose. However, further improvements of electrocatalytic performances are needed, especially
regarding increasing sensitivity and widening the linear range of glucose detection.
In this regard, in addition to the monometallic cobalt oxide catalyst, a series of bimetallic catalysts
supported on AP (Co+Cu/AP, Co+Zn/AP, Co+Fe/AP, and Co+Ni/AP) have been synthesized by the
incipient wetness impregnation method (Pinna, 1998). The total amount of supported metal was fixed at 4
mass%, while cobalt:dopant molar ratio was 9:1 for all samples. The synthesized materials were prepared
in the form of carbon paste electrode (Co+dopant/AP-CPE) with the same mass ratio of Co+dopant/AP to
carbon black (CB) and applied as a working electrode.
All the electrochemical measurements of each Co+dopant/AP-CPE were conducted using an Autolab
PGSTAT302N potentiostat with Nova 2.1 software. The experiments were carried out in a three-electrode
cell with prepared electrodes as working, Ag/AgCl (3 M KCl) as a reference electrode, and platinum rod
as a counter electrode. Electrochemical behavior of the working electrodes for glucose detection was
studied by the cyclic voltammetry and chronoamperometry in alkaline solution, with and without glucose.
Among investigated electrodes for glucose electrooxidation, the Co+Fe/AP-CPE exhibited the highest
current response with the best sensitivity. These very first results indicated a vital role of Fe in enhancing
the glucose-sensing performance of aluminum pillared montmorillonite-supported cobalt. The physical
chemical characterization of all Co+dopant/AP materials is ongoing.",
publisher = "The clay mineral society",
journal = "Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey",
title = "Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing",
pages = "330-330",
url = "https://hdl.handle.net/21.15107/rcub_cer_6360"
}