Year: 2024
Type: article
Abstract: This paper reports the use of nanoparticles (NPs)-modified voltammetric sensors for the rapid determination of glycerol in the presence of ethanol and methanol, which are used in the transesterification reaction of biodiesel production. Two different modified electrodes have been prepared to form the electronic tongue (ET): copper hexacyanoferrate NPs obtained by chemical synthesis and mixed into graphite/epoxy (GEC) electrode, and nickel hydroxide NPs electrodeposited in reduced graphene oxide onto a GEC electrode. The response characteristics of these electrodes were first evaluated by building the respective calibration against glycerol, ethanol, and methanol. The electrodes demonstrated good stability during their analytical characterization, while principal component analysis confirmed the differentiated response against the different alcohols. Finally, the quantification of mixtures of these substances was achieved by a genetic algorithm-artificial neural networks (GA-ANNs) model, showing satisfactory agreement between expected and obtained values.
Source: Chemosensors
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,069
Awards: G114145171, G1572731690, G1765928951, G2262748287, G2529438413, G295657101, G3086759655, G3663257315, Development of composite sensors for the direct detection of carbohydrates and phenolic compounds derived from the acid hydrolysis process of sugarcane lignocellulosic materials, G4235342273, G4567245221, G4767612142, G5028378970, G5421974903, G7447714107, G751731195, G7891604132, G821184844, G8531944592, G8920660035
OpenAlex ID: W4402134657