Synthesis of nanoparticulate anatase and rutile crystallites at low temperatures in the Pluronic F127 microemulsion system
Artikel i vetenskaplig tidskrift, 2011

A low-temperature synthesis method for preparing nanosized TiO(2) crystallites has been developed based on a Pluronic F127 microemulsion system. Both anatase and rutile polymorphs can be prepared, and there exists a temperature window between 40 and 50 degrees C where the formation of rutile is favored over anatase. At 60 degrees C and above, anatase is kinetically favored and only very slowly transforms to rutile at 60 degrees C. The results differ from previous observations regarding formation kinetics and temperature range for rutile formation as well as in the microscopic aggregation of the formed nanoparticles. This development of a low-temperature synthesis of crystalline titania nanoparticles within the Pluronic block copolymer system is an important and enabling step toward devising a direct synthesis route for the formation of ordered mesoporous and crystalline titania.

photocatalytic properties

water

mesoporous titania

surface-area rutile

films

copolymer

powder

tio2

silica

Författare

Erik Nilsson

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

H. Furusho

Stockholms universitet

O. Terasaki

Stockholms universitet

Korea Advanced Institute of Science and Technology

Anders Palmqvist

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Journal of Materials Research

0884-2914 (ISSN)

Vol. 26 2 288-295

Ämneskategorier

Materialteknik

DOI

10.1557/jmr.2010.5

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Senast uppdaterat

2018-03-01