Abstract
We report the development of Ag nanodendrites where ultrafine Pd particles served as seeds for the subsequent deposition of Ag on their surfaces. By applying chitosan as both a reductant and a stabilizer, chitosan-conjugated Ag dendritic nanopowders were continuously synthesized using a serial system consisting of a spark discharge, an ultrasound-assisted polyol cell, and a collison atomizer with a heated tubular reactor. The resulting materials were then employed to kill cancerous cells photothermally. A spark discharge between Pd electrodes was employed to vaporize Pd components into a N2 flow, and finally Pd particles were injected into an ultrasound irradiating Ag polyol cell to initiate Ag deposition on incoming Pd primary particles (∼4 nm in lateral dimension). The chitosan-conjugated Ag nanodendrites (∼240 nm in lateral dimension) were formed through collison atomization, and the nanodendrites were employed as sensitizers for photothermal cancerous cell killing under near-infrared irradiation in vitro.
Published Version
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