Engineering the shape
of nanoparticles has emerged as an effective
approach for optimizing their physical/chemical properties. In particular,
two-dimensional (2D) nanostructures with their high surface area/volume
ratio have opened up exciting opportunities for developing advanced
anisotropic materials and facilitating chemical processes that demand
high levels of surface interactions. Although the great potential
of low-dimensional 2D nanoswimmers has been suggested by theoretical
works, very little experimental study has been undertaken thus far.
Here we fabricated a low-dimensional magnetic nanomotor based on discotic
barium ferrite nanoplates. We demonstrated that the “fuel-to-motion”
behavior and the enhanced diffusion of nanoswimmers are not limited
to just 0D nanospheres or 1D nanorods but are also applicable to 2D
nanoplates. In addition, the 2D nanoswimmers showed excellent catalytic
performance in removing molecular and particle stains on cloth likely
due to their catalytic activity as well as active locomotion that
enhanced microconvection of solution. This study validated a new self-powered
nanomachine for cleaning application without any requirement of surfactants
or external mechanical energy.