Synthesis of TiO2/ZnO/Au for application in a new type of paper-based photo-microfluidic fuel cell using human blood

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dc.contributor.authorDector, Andrés
dc.contributor.authorOvando Medina, Víctor M.
dc.contributor.authorVera Estrada I.L.
dc.contributor.authorOlivares Ramírez, Juan Manuel
dc.contributor.authorRomero Galarza, Adolfo
dc.contributor.authorAntonio Carmona, Iveth D.
dc.contributor.authorMorales Morales, Jimmy Alexander
dc.contributor.authorGarcía Rodríguez, Francisco G.
dc.contributor.authorÁlvarez Rodríguez, Edder H.
dc.date.accessioned2025-04-04T15:55:04Z
dc.date.available2025-04-04T15:55:04Z
dc.date.issued2023-10
dc.description.abstractThe use of microfluidic fuel cells (μFCs) as power sources in the development of non-implantable biomedical devices, such as patch sensors, could be broadened with the use of physiological fluids as fuels and the use of low-cost materials. In this work, we report the evaluation of a paper-based photo-μFC working with human blood as fuel, and we implement a nanocomposite as anode that presents photoactivity under visible light. The electrocatalyst was synthesized using Zn(NO3)2 and TiCl4 as precursors of the ZnO and the TiO2, respectively, which were coated with Au nanoparticles. It was demonstrated that ZnO and TiO2 nanoparticles consisted of crystals with wurtzite and anatase phases, with average sizes of 26.6 and 19.5 nm, respectively, and the TiO2/ZnO/Au nanocomposite presents 2.62 eV of band gap energy, demonstrating its photoactivity under visible light irradiation. The photocatalyst was tested as photoanode in half-cell for glucose oxidation in aqueous solutions, under illumination and dark conditions, showing characteristics peaks of glucose oxidation in both cases, but higher current was generated under illumination. Finally, we present the implementation of this anode and the construction of a paper-based photo-μFC using human blood as fuel; its performance was evaluated under visible light irradiations and in the dark. The results show a better performance under illumination with voltage, current, and power density values of 0.95 V, 1.2 mA cm−2, and 0.458 mW/cm2, respectively, compared to the corresponding values of 0.8 V, 0.96 mA cm−2, and 0.274 mW/cm2 in dark conditions.
dc.identifier.citationDector, A., Ovando-Medina, V. M., Vera-Estrada, I. L., Olivares-Ramírez, J. M., Romero-Galarza, A., Antonio-Carmona, I. D., Morales-Morales, J. A., García-Rodríguez, F. G., & Álvarez-Rodríguez, E. H. (2023). Synthesis of TiO<inf>2</inf>/ZnO/Au for application in a new type of paper-based photo-microfluidic fuel cell using human blood. Journal of Solid State Electrochemistry, 27(10), 2821–2835. https://doi.org/10.1007/s10008-023-05585-9
dc.identifier.issn14328488
dc.identifier.urihttps://repositorio.usc.edu.co/handle/20.500.12421/6278
dc.language.isoen
dc.subjectAnodes
dc.subjectBlood
dc.subjectChlorine compounds
dc.subjectElectrocatalysts
dc.subjectEnergy gap
dc.subjectFuel cells
dc.subjectGlucose
dc.subjectGold nanoparticles
dc.subjectII-VI semiconductors
dc.subjectIrradiation
dc.subjectMicrofluidics
dc.subjectNanocomposites
dc.subjectOxidation
dc.subjectOxide minerals
dc.subjectSynthesis (chemical)
dc.subjectTiO2 nanoparticles
dc.subjectZinc oxide
dc.subjectZinc sulfide
dc.subjectAu nanoparticle
dc.subjectDark conditions
dc.subjectGlucose oxidation
dc.subjectHuman bloods
dc.subjectMicrofluidic fuel cell
dc.subjectPaper-based photo-microfluidic fuel cell
dc.subjectPerformance
dc.subjectPhoto-activities
dc.subjectTiO2-ZnO–au nanoparticle
dc.subjectVisible-light irradiation
dc.titleSynthesis of TiO2/ZnO/Au for application in a new type of paper-based photo-microfluidic fuel cell using human blood
dc.typeArticle

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