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Platinum-paper micromotors: an urchin-like nanohybrid catalyst for green monopropellant bubble-thrusters.

Authors
  • Claussen, Jonathan C
  • Daniele, Michael A
  • Geder, Jason
  • Pruessner, Marius
  • Mäkinen, Antti J
  • Melde, Brian J
  • Twigg, Mark
  • Verbarg, Jasenka M
  • Medintz, Igor L
Type
Published Article
Journal
ACS Applied Materials & Interfaces
Publisher
American Chemical Society (ACS)
Publication Date
Oct 22, 2014
Volume
6
Issue
20
Pages
17837–17847
Identifiers
DOI: 10.1021/am504525e
PMID: 25215632
Source
Medline
Keywords
License
Unknown

Abstract

Platinum nanourchins supported on microfibrilated cellulose films (MFC) were fabricated and evaluated as hydrogen peroxide catalysts for small-scale, autonomous underwater vehicle (AUV) propulsion systems. The catalytic substrate was synthesized through the reduction of chloroplatinic acid to create a thick film of Pt coral-like microstructures coated with Pt urchin-like nanowires that are arrayed in three dimensions on a two-dimensional MFC film. This organic/inorganic nanohybrid displays high catalytic ability (reduced activation energy of 50-63% over conventional materials and 13-19% for similar Pt nanoparticle-based structures) during hydrogen peroxide (H2O2) decomposition as well as sufficient propulsive thrust (>0.5 N) from reagent grade H2O2 (30% w/w) fuel within a small underwater reaction vessel. The results demonstrate that these layered nanohybrid sheets are robust and catalytically effective for green, H2O2-based micro-AUV propulsion where the storage and handling of highly explosive, toxic fuels are prohibitive due to size-requirements, cost limitations, and close person-to-machine contact.

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