"Green Electrodes" modified with au nanoparticles synthesized in glycerol, as electrochemical nitrite sensor

Authors
Gobelli, Dino Joaquin; Correa, Nestor Mariano; Barroso, M. Fátima; Moyano, Fernando; Molina, Patricia Gabriela
Publication Year
2015
Language
English
Format
article
Status
Published version
Description
A new environmentally friendly Au nanoparticles (Au NPs) synthesis in glycerol by using ultraviolet irradiation and without extra-added stabilizers is described. The synthesis proposed in this work may impact on the non-polluting production of noble nanoparticles with simple chemicals normally found in standard laboratories. These Au NPs were used to modify a carbon paste electrode (CPE) without having to separate them from the reaction medium. This green electrode was used as an electrochemical sensor for the nitrite detection in water. At the optimum conditions the green sensor presented a linear response in the 2.0×10-7-1.5×10-5M concentration range, a good detection sensitivity (0.268ALmol-1), and a low detection limit of 2.0×10-7M of nitrite. The proposed modified green CPE was used to determine nitrite in tap water samples.
Fil: Gobelli, Dino Joaquin. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
Fil: Barroso, M. Fátima. Instituto Superior de Engenharia do Porto; Portugal
Fil: Moyano, Fernando. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Molina, Patricia Gabriela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Subject
GOLD NANOPARTICLES
GREEN ELECTRODES
NITRITE SENSOR
SYNTHESIS IN GLYCEROL
Otras Ciencias Químicas
Ciencias Químicas
CIENCIAS NATURALES Y EXACTAS
Access level
Open access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/61498