Registrado por

Cruz Argüello Julio Cesar

Tipo de artículo

Revistas indexadas

Título de artículo

Copper nanoparticles suitable for bifunctional cholesterol oxidation reaction: harvesting energy and sensor

Volúmen

2022

Número de registro

Campo

FISICA

Disciplina

FISICOQUIMICA

Subdisciplina

ELECTROQUIMICA

Resumen

This study reports the performance of simple low-cost synthesized bifunctional Cu/Cu2O nanoparticles (NPs) used as a catalyst for energy-harvesting applications through of a microfluidic fuel cell (?FC), and further, as cholesterol (Chol) sensor. TEM characterization of the NPs showed spheres between 4 and 10 nm, while XRD and XPS analysis confirmed the composition and preferential crystallographic plane of Cu/Cu2O. In addition, 25.26 m2 g? 1 surface area was obtained, which is greater than those commercial materials. NPs showed high activity toward the cholesterol oxidation reaction when were used as a sensor, obtaining a linear interval between 0.5 and 1 mM and 850 ?A mM? 1 mg? 1 of sensitivity and 8.9 ?M limit of quantification LOQ. These values are comparable to results previously reported. Moreover, Cu/Cu2O NPs were used as anode in a ?FC with 0.96 V of cell voltage and 6.5 mA cm? 2 and 1.03 mW cm? 2 of current and power density, respectively. This performance is the highest currently reported for cholesterol application as an alternative fuel, and the first one reported for a microfluidic fuel cell system as far as is known. Results showed that the obtained Cu-based NPs presented an excellent performance for the dual application both ?FC and sensor, which has potential applications in biomedicine and as an alternative energy source.

URL (DOI, ORCID, HANDLE, enlace)

Fuente

Sistema Estatal de Información y Documentación Científica y Tecnológica

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6