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Aqueous OH−/H+ dual-ion gradient assisted electricity effective electro-organic synthesis of 2,5-furandicarboxylic acid paired with hydrogen fuel generation
[Display omitted] The OH−/H+ dual-ion gradient has a hidden electromotive force of 0.82 V under standard conditions; however, its non-redox nature completely prevents its direct interconversion as electrical driving force. We show by using organic molecules whose heterogeneous electron transfer is p...
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Published in: | Journal of colloid and interface science 2023-01, Vol.630, p.477-483 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | [Display omitted]
The OH−/H+ dual-ion gradient has a hidden electromotive force of 0.82 V under standard conditions; however, its non-redox nature completely prevents its direct interconversion as electrical driving force. We show by using organic molecules whose heterogeneous electron transfer is pH dependent, OH−/H+ dual-ion energy can be directly harvested as electrical driving force for performing simultaneous electro-organic synthesis and hydrogen fuel production in an electricity effective manner. To demonstrate this dual-ion gradient assisted electro-organic synthesis, 5-hydroxymethylfurfural (HMF) is chosen as the model molecule because of the immense techno commercial applications of its oxidized products. This dual-ion assisted device only required ∼1 V to provide a current density of 50 mA/cm2 and for achieving the same rate; the traditional state-of-the-art electrolytic cell required a doubling of the applied potential. The dual-ion gradient assisted device can convert biomass-derived HMF to economically important FDCA with ∼90 % yield and ∼87 % Faradaic efficiency with simultaneous H2 fuel production at a potential as low as 1 V. |
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ISSN: | 0021-9797 1095-7103 |
DOI: | 10.1016/j.jcis.2022.10.007 |