A new type of air-breathing photo-microfluidic fuel cell based on ZnO/Au using human blood as energy source
| Autor: | Víctor M. Ovando-Medina, A. Dector, Iveth D. Antonio-Carmona, Hugo Martínez-Gutiérrez, Adolfo Romero-Galarza, J.M. Olivares-Ramírez |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Band gap Composite number Microfluidics Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Cathode 0104 chemical sciences law.invention Fuel Technology Chemical engineering law Surface plasmon resonance 0210 nano-technology Energy source Power density |
| Zdroj: | International Journal of Hydrogen Energy. 44:31423-31433 |
| ISSN: | 0360-3199 |
| Popis: | The purpose of this work was the evaluation of a microfluidic fuel cell (μFC), in which human blood glucose was photo/electrochemically oxidized. In this regard, ZnO/Au composites with different Au content (1, 2 and 3%) were synthesized, as well as physicochemical and electrochemically characterized. In order to know if these ZnO/Au composites would serve as photo-electrocatalysts in a μFC, their photo- and electrochemical activities were analyzed. In this sense, the optical band gap of composites was determined as 3.15 eV, showing the typical surface plasmon resonance between 530 and 550 nm, while the electrocatalytic activity of ZnO/Au composites was evaluated in terms of the 5 mM glucose, showing that the minimum negative potential shift of the glucose oxidation peak corresponds to the composite with 3% of Au content. A μFC was fabricated using ZnO/Au 3% as photo-anode under visible-light, Pt/C as air-breathing cathode, and human blood and air coming from environment as fuel and oxidant, respectively. It was observed that μFC presented a 1.5-fold more power density under visible-light than in the darkness. This work represents an advantage in the use of photo-electrocatalyst materials towards the development of a new type of air-breathing photo-microfluidic fuel cells employing physiological fluids opening the possibility to be used as a power source in non-implantable medical devices. |
| Databáze: | OpenAIRE |
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