Controlling morphology, mesoporosity, crystallinity, and photocatalytic activity of ordered mesoporous TiO2 films prepared at low temperature
Journal article, 2014

Partly ordered mesoporous titania films with anatase crystallites incorporated into the pore walls were prepared at low temperature by spin-coating a microemulsion-based reaction solution. The effect of relative humidity employed during aging of the prepared films was studied using SEM, TEM, and grazing incidence small angle X-ray scattering to evaluate the mesoscopic order, porosity, and crystallinity of the films. The study shows unambiguously that crystal growth occurs mainly during storage of the films and proceeds at room temperature largely depending on relative humidity. Porosity, pore size, mesoscopic order, crystallinity, and photocatalytic activity of the films increased with relative humidity up to an optimum around 75%.

Author

Björn Neo Esbjörnsson Elgh

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Ning Yuan

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

H. S. Cho

Korea Advanced Institute of Science and Technology

D. Magerl

Technical University of Munich

M. Philipp

Technical University of Munich

S.V. Roth

Deutsches Elektronen-Synchrotron (DESY)

K. Yoon

Sogang University

P. Müller-Buschbaum

Technical University of Munich

O. Terasaki

Korea Advanced Institute of Science and Technology

Anders Palmqvist

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

APL Materials

2166-532X (eISSN)

Vol. 2 11 Art. no. 113313- 113313

Subject Categories

Other Engineering and Technologies

Nano Technology

DOI

10.1063/1.4899117

More information

Latest update

5/14/2018