Surfactant-Assisted Elimination of a High Energy Facet as a Means of Controlling the Shapes of TiO2 Nanocrystals

The surfactant-mediated shape evolution of titanium dioxide anatase nanocrystals in nonaqueous media was studied. The shape evolves from bullet and diamond structures to rods and branched rods. The modulation of surface energies of the different crystallographic faces through the use of a surface se...

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Veröffentlicht in:	Journal of the American Chemical Society 2003-12, Vol.125 (51), p.15981-15985
Hauptverfasser:	Jun, Young-wook, Casula, Maria F, Sim, Jae-Hwan, Kim, Sang Youl, Cheon, Jinwoo, Alivisatos, A. Paul
Format:	Artikel
Sprache:	eng
Schlagworte:	Clusters, nanoparticles, and nanocrystalline materials Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Physics Structure of solids and liquids crystallography
Online-Zugang:	Volltext
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Zusammenfassung:	The surfactant-mediated shape evolution of titanium dioxide anatase nanocrystals in nonaqueous media was studied. The shape evolves from bullet and diamond structures to rods and branched rods. The modulation of surface energies of the different crystallographic faces through the use of a surface selective surfactant is the key parameter for the shape control.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja0369515