Electrochemical determination of total reducing sugars from bioethanol production using glassy carbon electrode modified with graphene oxide containing copper nanoparticles

Autor(es)

Unterman Santos, Flavia Camilo ^[1] ; Paim, Leonardo Lataro ^[2] ; da Silva, Jose Luiz ^[1] ; Stradiottoa, Nelson Ramos ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Inst Chem, Dept Analyt Chem, BR-14800060 Araraquara, SP - Brazil

^[2] UNESP Univ Estadual Paulista, CCEE Energy Engn, BR-19274000 Rosana, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FUEL; v. 163, p. 112-121, JAN 1 2016.
• Citações Web of Science: 10

Resumo

This work presents the analytical method development for total reducing sugars determination in residual water samples obtained from sugarcane processing for ethanol production. This method was developed using pulsed amperometry with a glassy carbon electrode modified with graphene oxide containing copper nanoparticles. With pulsed amperometry detection was achieved a limit of detection of 6.4 x 10(-6) mol L-1. The amperometric sensitivity was 1.6 x 10(-2) A mol(-1) L. The recovery study showed that the method has good accuracy and repeatability, with recovery of 92.8 x 0.5%. Experiment results obtained showed that the sensor has good long-term stability, sensitivity and is interference free, and the method developed is simple and fast. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/22846-9 - Desenvolvimento de sensor para determinação de açúcares redutores totais baseado em eletrodo quimicamente modificado com grafeno contendo nanopartículas de cobre
• Beneficiário: Flávia Camilo Unterman Santos
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica