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A hybrid fuel cell for water purification and simultaneously electricity generation

A hybrid fuel cell for water purification and simultaneously electricity generation The development of highly efficient energy conversion technologies to extract energy from wastewater is urgently needed, especially in facing of increasing energy and environment burdens. Here, we successfully fabricated a novel hybrid fuel cell with BiOCl-NH4PTA as photocatalyst. The polyoxometalate (NH4PTA) act as the acceptor of photoelectrons and could retard the recombination of photogenerated electrons and holes, which lead to superior photocatalytic degradation. By utilizing BiOCl-NH4PTA as photocatalysts and Pt/C air-cathode, we successfully constructed an electron and mass transfer enhanced photocatalytic hybrid fuel cell with flow-through field (F-HFC). In this novel fuel cell, dyes and biomass could be directly degraded and stable power output could be obtained. About 87 % of dyes could be degraded in 30 min irradiation and nearly 100 % removed within 90 min. The current density could reach up to ∼267.1 µA/cm2; with maximum power density (Pmax) of ∼16.2 µW/cm2 with Rhodamine B as organic pollutant in F-HFC. The power densities were 9.0 µW/cm2, 12.2 µW/cm2, and 13.9 µW/cm2 when using methyl orange (MO), glucose and starch as substrates, respectively. This hybrid fuel cell with BiOCl-NH4PTA composite fulfills the purpose of decontamination of aqueous organic pollutants and synchronous electricity generation. Moreover, the novel design cell with separated photodegradation unit and the electricity generation unit could bring potential practical application in water purification and energy recovery from wastewater.[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Frontiers of Environmental Science & Engineering Springer Journals

A hybrid fuel cell for water purification and simultaneously electricity generation

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References (94)

Publisher
Springer Journals
Copyright
Copyright © Higher Education Press 2023
ISSN
2095-2201
eISSN
2095-221X
DOI
10.1007/s11783-023-1611-6
Publisher site
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Abstract

The development of highly efficient energy conversion technologies to extract energy from wastewater is urgently needed, especially in facing of increasing energy and environment burdens. Here, we successfully fabricated a novel hybrid fuel cell with BiOCl-NH4PTA as photocatalyst. The polyoxometalate (NH4PTA) act as the acceptor of photoelectrons and could retard the recombination of photogenerated electrons and holes, which lead to superior photocatalytic degradation. By utilizing BiOCl-NH4PTA as photocatalysts and Pt/C air-cathode, we successfully constructed an electron and mass transfer enhanced photocatalytic hybrid fuel cell with flow-through field (F-HFC). In this novel fuel cell, dyes and biomass could be directly degraded and stable power output could be obtained. About 87 % of dyes could be degraded in 30 min irradiation and nearly 100 % removed within 90 min. The current density could reach up to ∼267.1 µA/cm2; with maximum power density (Pmax) of ∼16.2 µW/cm2 with Rhodamine B as organic pollutant in F-HFC. The power densities were 9.0 µW/cm2, 12.2 µW/cm2, and 13.9 µW/cm2 when using methyl orange (MO), glucose and starch as substrates, respectively. This hybrid fuel cell with BiOCl-NH4PTA composite fulfills the purpose of decontamination of aqueous organic pollutants and synchronous electricity generation. Moreover, the novel design cell with separated photodegradation unit and the electricity generation unit could bring potential practical application in water purification and energy recovery from wastewater.[graphic not available: see fulltext]

Journal

Frontiers of Environmental Science & Engineering – Springer Journals

Published: Jan 1, 2023

Keywords: Flow-through field; Hybrid fuel cell; Polyoxometalates; Water purification; Electricity generation

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