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Glassy carbon electrodes modified with Au@NiCo-glycerolates for non-enzymatic detection of glucose in beverages

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Autor(es):
Hyder, Ali ; Lima, Irlan S. ; Oliveira, Thawan G. ; Oliveira, Giovane J. ; Goncalves, Josue M. ; Khan, Zahid U. ; Memon, Ayaz Ali ; Solangi, Amber Rehana ; Angnes, Lucio
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: Talanta; v. 300, p. 9-pg., 2026-04-01.
Resumo

Monitoring of glucose (Gluc) levels in commercial beverages plays a vital role in preventing and managing diabetic disease effectively in the human body. As a method for monitoring Glu, a bimetallic nickel and cobalt glycerolates decorated with gold (Au@NiCo-Gly) composite was prepared using a solvothermal approach. A series of characterization analytical techniques has been employed to confirm the synthesis of the Au@NiCo-Gly composite, including Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The performance of the electrochemical sensor was evaluated by using CV and EIS in 0.50 M KOH as a supporting electrolyte. The use of these electrodes for FIA-amperometric quantification of glucose was highly efficient for glucose quantification under optimized experimental parameters. The developed sensor demonstrated a low detection limit of 0.0168 mM and a limit of quantification of 0.0560 mM. The practical applicability of the developed sensor was validated by detecting Gluc in beverage samples with recovery rates (111.5 %) falling within acceptable analytical standards. These findings highlight the Au@NiCo-Gly/GCE modified electrode as a promising candidate for efficient, sensitive, and selective monitoring of Gluc in beverage samples. (AU)

Processo FAPESP: 22/04127-4 - Alfa-hidróxidos metálicos vs. glicerolatos metálicos: síntese, propriedades e aplicações
Beneficiário:Irlan dos Santos Lima
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 23/17560-0 - Design de novos compostos de coordenação de alta entropia por spray-drying e seus derivados para conversão e armazenamento de energia
Beneficiário:Josué Martins Gonçalves
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores