Title

Pt-Free microengines at extremely low peroxide levels

Document Type

Journal Article

Publication Title

Chemical Communications

Publisher

Royal Society of Chemistry

Place of Publication

United Kingdom

School

School of Engineering

RAS ID

28312

Comments

Ye, H., Ma, G., Kang, J., Sun, H., & Wang, S. (2018). Pt-Free microengines at extremely low peroxide levels. Chemical Communications, 54(37), 4653-4656. Available here.

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.

DOI

10.1039/c8cc01548a

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