Controlling morphology, mesoporosity, crystallinity, and photocatalytic activity of ordered mesoporous TiO2 films prepared at low temperature
Artikel i vetenskaplig tidskrift, 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%.

Författare

Björn Neo Esbjörnsson Elgh

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Ning Yuan

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

H. S. Cho

Korea Advanced Institute of Science & Technology

D. Magerl

Technische Universitat Munchen

M. Philipp

Technische Universitat Munchen

S.V. Roth

Deutsche Elektronen-Synchrotron

K. Yoon

Sogang University

P. Müller-Buschbaum

Technische Universitat Munchen

O. Terasaki

Korea Advanced Institute of Science & Technology

Anders Palmqvist

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

APL Materials

2166-532X (eISSN)

Vol. 2 Art. no. 113313- 113313

Ämneskategorier

Annan teknik

Nanoteknik

DOI

10.1063/1.4899117