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
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
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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.