Surfactant-assisted elimination of a high energy facet as a means of controlling the shapes of TiO2 nanocrystals

Young-Wook Jun; Maria F Casula; Jae-Hwan Sim; Sang Youl Kim; Jinwoo Cheon; A Paul Alivisatos

doi:10.1021/ja0369515

Surfactant-assisted elimination of a high energy facet as a means of controlling the shapes of TiO2 nanocrystals

J Am Chem Soc. 2003 Dec 24;125(51):15981-5. doi: 10.1021/ja0369515.

Authors

Young-Wook Jun¹, Maria F Casula, Jae-Hwan Sim, Sang Youl Kim, Jinwoo Cheon, A Paul Alivisatos

Affiliation

¹ Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, , USA.

PMID: 14677990
DOI: 10.1021/ja0369515

Abstract

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.