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Issue 12, 2017
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Graphitic carbon coupled poly(anthraquinone) for proton shuttle flow-in-a-cell application

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Abstract

Coupled electron and proton transport are an integral part of non-gassing electro-osmotic pumps (EOP). The kinetics of the electrode limits the kinetics of the electron transfer and hence the flow. This is observed in the present study with newly synthesized graphitic carbon covalently coupled to poly(anthraquinone) (PAQ). When EOP with identical electrodes were assembled, proton shuttle maintained the reversible flow, which was linearly dependent on the ks values. A Laviron plot was used to calculate the electron-transfer rate constant ks and transfer coefficient α, and their linear dependency on content of graphitic carbon was observed. The best ks value obtained was 0.67 s−1 for 15PAQ. The sandwich-type flow-in-a-cell showed the best result of ∼40 μL min−1 cm−1 V−1 electro-osmotic flux for 15PAQ. It reveals that a balanced combination of graphitic carbon and PAQ is the prime requirement for high-performance electrode materials to be used in microfluidic devices and energy applications.

Graphical abstract: Graphitic carbon coupled poly(anthraquinone) for proton shuttle flow-in-a-cell application

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Publication details

The article was received on 09 Dec 2016, accepted on 22 Feb 2017, published on 22 Feb 2017 and first published online on 22 Feb 2017


Article type: Paper
DOI: 10.1039/C6CP08419B
Citation: Phys. Chem. Chem. Phys., 2017,19, 8447-8456
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    Graphitic carbon coupled poly(anthraquinone) for proton shuttle flow-in-a-cell application

    S. Mathi, R. Kumar, R. K. Nagarale and A. Sharma, Phys. Chem. Chem. Phys., 2017, 19, 8447
    DOI: 10.1039/C6CP08419B

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