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Pt-Free microengines at extremely low peroxide levels

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Abstract

Herein, we demonstrate that iron oxide modified MnO2 (FeOx–MnO2) catalyzed micromotors can be fabricated via electrochemical co-reduction and exhibit exceptional high performance at an extremely low hydrogen peroxide (H2O2) fuel concentration. We observed that graphene/FeOx–MnO2 microtubes could show motion behaviors at fuel concentration as low as 0.03% H2O2, which is nearly one order of magnitude lower than Pt-based micromotors (normally at above 0.2% H2O2). Moreover, the micromotors exhibit higher speeds than any other reported catalytic micro/nanomotors (MNMs) at low peroxide levels. The FeOx–MnO2 systems are better catalytic MNMs, due to their excellent catalytic activity, easy fabrication, robust structure and movement, as well as low-cost, biocompatible and abundance nature, showing great potential for future applications.

Graphical abstract: Pt-Free microengines at extremely low peroxide levels

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Publication details

The article was received on 24 Feb 2018, accepted on 29 Mar 2018 and first published on 30 Mar 2018


Article type: Communication
DOI: 10.1039/C8CC01548A
Citation: Chem. Commun., 2018, Advance Article
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    Pt-Free microengines at extremely low peroxide levels

    H. Ye, G. Ma, J. Kang, H. Sun and S. Wang, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC01548A

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