Title

Pt-Free microengines at extremely low peroxide levels

Document Type

Journal Article

Publisher

Royal Society of Chemistry

Place of Publication

United Kingdom

School

School of Engineering

Comments

Originally published as: 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. Original article 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

Access Rights

not_free_to_read

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