Premium
Well‐Defined Crystalline TiO 2 Nanoparticles Generated and Immobilized on a Colloidal Nanoreactor
Author(s) -
Lu Yan,
Hoffmann Martin,
Yelamanchili Ram Sai,
Terrenoire Alexandre,
Schrinner Marc,
Drechsler Markus,
Möller Michael W.,
Breu Josef,
Ballauff Matthias
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800608
Subject(s) - materials science , anatase , rhodamine b , polystyrene , nanoreactor , nanoparticle , chemical engineering , polyelectrolyte , styrene , calcination , crystallinity , photocatalysis , polymer chemistry , mesoporous material , nanocomposite , colloid , polymer , nanotechnology , copolymer , chemistry , catalysis , organic chemistry , composite material , engineering
We synthesized well‐defined, crystalline TiO 2 nanoparticles at room temperature by using spherical polyelectrolyte brush particles as a template. The template particles consist of a polystyrene core from which long chains of poly(styrene sodium sulfonate) are grafted. Tetraethylorthotitanate is hydrolyzed in the presence of brush particles leading to the formation of well‐dispersed TiO 2 nanoparticles ( d = 4∼12 nm). Wide‐angle X‐ray scattering demonstrates that anatase nanoparticles with high crystallinity have been generated at room temperature. The as‐prepared TiO 2 nanocomposites present high photocatalytic activity for the degradation of Rhodamine B under UV irradiation. Finally, mesoporous TiO 2 structures with defined pore size are formed after calcination.