Publications by Geiser G Oliveira

Publications by authors named "Geiser G Oliveira"

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Electrochemical biosensor made with tyrosinase immobilized in a matrix of nanodiamonds and potato starch for detecting phenolic compounds.

Jéssica Rocha Camargo Marina Baccarin Paulo A Raymundo-Pereira Anderson M Campos Geiser G Oliveira Osvaldo N Oliveira

Anal Chim Acta

November 2018

Article Synopsis

Researchers are developing low-cost and biocompatible materials for sensing applications, focusing on carbon nanodiamonds (NDs) combined with potato starch (PS) on glassy carbon electrodes.
The ND/PS film enables the immobilization of tyrosinase, creating a highly sensitive biosensor for detecting catechol, reaching detection limits suitable for environmental samples.
The use of NDs enhances the sensor's performance due to their large surface area and conductivity, suggesting the potential to adapt this matrix for other enzymes and biomolecules in biosensing technologies.

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Square-wave adsorptive stripping voltammetric determination of nanomolar levels of bezafibrate using a glassy carbon electrode modified with multi-walled carbon nanotubes within a dihexadecyl hydrogen phosphate film.

Jorge Armando Ardila Geiser Gabriel Oliveira Roberta Antigo Medeiros Orlando Fatibello-Filho

Analyst

April 2014

A highly sensitive method for bezafibrate determination using a glassy carbon electrode (GCE) modified with multi-walled carbon nanotubes within a dihexadecyl hydrogen phosphate film based on square-wave adsorptive stripping voltammetry (SWAdSV) is proposed. The electrochemical behaviour of bezafibrate has been studied by cyclic voltammetry, showing an irreversible anodic peak at a potential of 1.09 V in 0.

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