TY - JOUR
T1 - Preparation of LaB 6 nanoparticles as a novel and effective near-infrared photothermal conversion material
AU - Chen, Cheng Jia
AU - Chen, Dong Hwang
N1 - Funding Information:
We are grateful to Taiwan Textile Research Institute and National Science Council for the support of this research.
PY - 2012/1/15
Y1 - 2012/1/15
N2 - LaB 6 nanoparticles have been prepared successfully by a stirred bead milling process. The anionic surfactant dodecylbenzenesulfonic acid was found to be suitable for the grinding and dispersion of LaB 6 powders, but cationic surfactant polyethyleneimine and nonionic surfactant polyethylene glycol could not yield a stable dispersion. Three kinds of grinding beads with the diameters of 50, 100, and 200μm all could reduce the mean hydrodynamic diameter of LaB 6 powders to about 100nm. However, although the grinding rate was slower, using the smaller grinding beads with a diameter of 50μm could yield a dispersion of LaB 6 nanoparticles with more uniform size. The resulting LaB 6 nanoparticles were confirmed to remain a cubic structure and the contaminant from ZrO 2 beads was below 5wt%. Furthermore, the LaB 6 nanoparticles exhibited a characteristic absorption around 1000nm and possessed an excellent near infrared (NIR) photothermal conversion property better than Au nanoshells. Because they were relatively cheap and easy-to-preparation than Au nanorods or nanoshells, the LaB 6 nanoparticles could be used as a novel and effective NIR photothermal conversion material and might find great potential in the biomedical application.
AB - LaB 6 nanoparticles have been prepared successfully by a stirred bead milling process. The anionic surfactant dodecylbenzenesulfonic acid was found to be suitable for the grinding and dispersion of LaB 6 powders, but cationic surfactant polyethyleneimine and nonionic surfactant polyethylene glycol could not yield a stable dispersion. Three kinds of grinding beads with the diameters of 50, 100, and 200μm all could reduce the mean hydrodynamic diameter of LaB 6 powders to about 100nm. However, although the grinding rate was slower, using the smaller grinding beads with a diameter of 50μm could yield a dispersion of LaB 6 nanoparticles with more uniform size. The resulting LaB 6 nanoparticles were confirmed to remain a cubic structure and the contaminant from ZrO 2 beads was below 5wt%. Furthermore, the LaB 6 nanoparticles exhibited a characteristic absorption around 1000nm and possessed an excellent near infrared (NIR) photothermal conversion property better than Au nanoshells. Because they were relatively cheap and easy-to-preparation than Au nanorods or nanoshells, the LaB 6 nanoparticles could be used as a novel and effective NIR photothermal conversion material and might find great potential in the biomedical application.
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U2 - 10.1016/j.cej.2011.11.035
DO - 10.1016/j.cej.2011.11.035
M3 - Article
AN - SCOPUS:84455169450
SN - 1385-8947
VL - 180
SP - 337
EP - 342
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -