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

Neo Björn Esbjörnsson Elgh (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; Ning Yuan (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; H. Cho ; D. Magerl ; M. Philipp ; S.V. Roth ; K. Yoon ; P. Müller-Buschbaum ; O. Terasaki ; Anders Palmqvist (Institutionen för kemi- och bioteknik, Teknisk ytkemi)
APL Materials (2166-532X). Vol. 2 (2014), 11, p. Art. no. 113313.
[Artikel, refereegranskad vetenskaplig]

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%.



Denna post skapades 2015-01-05. Senast ändrad 2016-10-11.
CPL Pubid: 209593

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)

Ämnesområden

Nanoteknik
Teknisk fysik

Chalmers infrastruktur