EGUÍLAZ RUBIO MARCOS
Congresos y reuniones científicas
Título:
Development of hybrid materials of type Co2TiO4/OGR for the electrochemical detection of biomolecules
Autor/es:
CONSTANZA VENEGAS; MARCOS EGUÍLAZ; FABIANA GUTIERREZ; GUSTAVO RIVAS; SOLEDAD BOLLO
Lugar:
Valdivia
Reunión:
Congreso; 4TH International Conference on Materials Science; 2017
Resumen:
Nanomaterials can be potentially used to improve the development of an electrochemical biosensor and the combination between them, has allowed the latest generation of hybrid materials with improved performance. Within the wide variety of inorganic compounds, interest in cobalt spinels involves simple preparation, high thermal stability, and the antecedent of cobalt as an electrocatalyst for applications in theelectrochemistry. On the other hand it is expected that the use of reduced graphene oxide (OGR) as a platform to support inorganic materials, will improve the electrochemical response.
Co2TiO4 (CTO) hybrids were synthesized together with OGR in different proportions, by in situ and ex situ method, the materials were characterized by DRX, SEM, TGA and electrochemical techniques such as amperometry and impedance, to study the response in the detection of H2O2, because it is widely used in different types of industries because it is a known oxidizing agent.
We compared the different sensitivities to the detection of H2O2 (figure1), obtained by the two synthetic routes, in all cases the sensitivity is greater with the hybrids synthesized by in situ method, which is attributed to a greater coupling between the material Inorganic and OGR, favoring the electronic transfer in the process of H2O2 reduction. It is also observed that the 3:1 CTO/OGR ratio was the one that presented the highest sensitivity to H2O2 reduction.
Co2TiO4 (CTO) hybrids were synthesized together with OGR in different proportions, by in situ and ex situ method, the materials were characterized by DRX, SEM, TGA and electrochemical techniques such as amperometry and impedance, to study the response in the detection of H2O2, because it is widely used in different types of industries because it is a known oxidizing agent.
We compared the different sensitivities to the detection of H2O2 (figure1), obtained by the two synthetic routes, in all cases the sensitivity is greater with the hybrids synthesized by in situ method, which is attributed to a greater coupling between the material Inorganic and OGR, favoring the electronic transfer in the process of H2O2 reduction. It is also observed that the 3:1 CTO/OGR ratio was the one that presented the highest sensitivity to H2O2 reduction.
