Análise por injeção em batelada de glicose assistida fotoeletroquimicamente explorando uma plataforma à base de Cu2O

• Autor(a) principal: CARDOSO, Elenilse Rodrigues
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFMA
• Texto Completo: https://tedebc.ufma.br/jspui/handle/tede/tede/3712
• topic: sensor fotoeletroquímico;; análise por injeção em batelada;; glicose;; óxido cuproso (Cu2O).; cuprous oxide (Cu2O).; photoelectrochemical sensor;; batch injection analysis;; Química

This work describes the development of a photoelectrochemical system for glucose quantification, exploring a photoelectrochemical assisted batch injection analysis (BIA). The BIA cell was coupled to a LED lamp in order, to control the incidence of light on the p-Cu2O/n-Cu2O/FTO photoactive platform. Physical and electrochemical characteristics of Cu2O films were investigated by X-ray diffraction, Raman spectroscopy, electrochemical impedance spectroscopy and cyclic voltammetry. The p-Cu2O/n-Cu2O/FTO photoelectrode coupled to PEC-BIA cellpresented a linear response from 10 to 1000 μmol L-1 , detection limit of 4 μmol L-1 and sensitivity of 0.768 ± 0.011 μAμmol L-1 . Average recovery value of 96% was evaluatedto the determination of glucose in an artificial saliva sample, which indicates a promising performance for the determination and quantification of glucose in real samples.