RT info:eu-repo/semantics/article
T1 Nickel oxide nanoparticles-modified glassy carbon electrodes for non-enzymatic determination of total sugars in commercial beverages
A1 Lorenzo Luis, Pablo Antonio
A1 Iñigo Fernández
A1 José Luis González-Mora
A1 Reynaldo Villalonga
A1 Pedro A. Salazar-Carballo
K1 Nickel oxide nanoparticles
K1 Non-enzymatic electrochemical sensor
K1 Sugars
K1 Afro-food industry
AB Nickel oxide nanoparticles of about 6 nm were obtained in two simple steps. Nanoparticles were characterized by using FTIR spectroscopy, TEM images, thermal analysis, X-ray diffraction and electrochemical techniques. GCEs were modified with nanoparticles by the casting method and their sensing properties were optimized. Electrochemical tests confirmed their excellent electrocatalytic properties, which are able to detect glucose, fructose, lactose and sucrose. Under optimized conditions NiO NPs-modified sensors showed a good sensitivity of about 3.06 A M1 cm2 (R2:0.999), linear range up to 0.6 mM, a fast time response (ca. 3 s) with a limit of detection of 0.39 μM. Their selectivity was tested for common interferences with promising results. The application of the sensor in real samples was evaluated by determining the total sugar content in different commercial beverages with recoveries of about 100%.
YR 2020
FD 2020
LK http://riull.ull.es/xmlui/handle/915/34739
UL http://riull.ull.es/xmlui/handle/915/34739
LA 
DS Repositorio institucional de la Universidad de La Laguna
RD 09-may-2024