The ability to shuttle nanometer-sized cargo controllably
could have implications in nanoscale loading and delivery applications
in biotechnology. In their article
in ACS Nano, Prof. Joseph Wang and co-workers describe the
incorporation of carbon nanotubes with nanowires made from gold and
platinum (Au/Pt-CNT nanowires) to produce high-speed catalytic
nanomotors that are capable of autonomous motion.
The Au/Pt-CNT nanowires are propelled by the breakdown of a
hydrogen peroxide/hydrazine “fuel” to hydrogen and
oxygen. The authors show that incorporating carbon nanotubes
drastically increases the speed of the nanomotors compared to Au/Pt
nanowires alone by increasing the oxidation efficiency of the fuel.
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