Beilstein J. Nanotechnol.2019,10, 1324–1331, doi:10.3762/bjnano.10.131
of detection as low as 2.4 ng mL−1 TNT within 1 minute. Such bubble-propelled Janus UCNP capsule motors have great potential for contaminated water analysis.
Keywords: autonomous motion; bubble propulsion; Janusmicromotors; layer-by-layer assembly; TNT detection; upconverting nanoparticles (UCNPs
quenching based sensors for active TNT detection. The Janus capsule micromotors were fabricated by depositing a thin platinum (Pt) film onto one hemisphere of the UCNP-functionalized hollow polyelectrolyte microcapsules. These as-prepared Janusmicromotors can autonomously move by catalytic decomposition of
catalytic Janusmicromotors demonstrates the potential for water pollutant analysis.
Results and Discussion
The Janus UCNP-functionalized hollow polyelectrolyte capsule micromotors were prepared via a template-assisted method as schematically shown in Figure 1a. Briefly, eight bilayers of poly(allylamine
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Figure 1:
(a) Schematic representation of the fabrication process of Janus UCNP-modified polyelectrolyte caps...