TY  - JOUR
AU  - Song, Lin
AU  - Rawolle, Monika
AU  - Hohn, Nuri
AU  - Gutmann, Jochen S.
AU  - Frielinghaus, Henrich
AU  - Müller-Buschbaum, Peter
TI  - Deformation of Mesoporous Titania Nanostructures in Contact with D$_{2}$O Vapor
JO  - Small
VL  - 14
IS  - 30
SN  - 1613-6810
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2018-04350
SP  - 1801461
PY  - 2018
AB  - For many applications, mesoporous titania nanostructures are exposed to water or need to be backfilled via infiltration with an aqueous solution, which can cause deformations of the nanostructure by capillary forces. In this work, the degree of deformation caused by water infiltration in two types of mesoporous, nanostructured titania films exposed to water vapor is com-pared. The different types of nanostructured titania films are prepared via a polymer template assisted sol–gel synthesis in conjunction with a polymer-template removal at high-temperatures under ambient conditions versus nitrogen atmosphere. Information about surface and inner morphology is extracted by scanning electron microscopy and grazing incidence small-angle neutron scattering (GISANS) measurements, respectively. Furthermore,  complementary information on thin film composition and porosity are probed via X-ray reflectivity. The backfilling induced deformation of near surface structures and structures inside the mesoporous titania films is determined  by GISANS before and after D2O infiltration. The respective atmosphere used for template removal influences the details of the titania nanostructure and strongly impacts the degree of water induced deformation. Drying of the films shows reversibility of the deformation.
LB  - PUB:(DE-HGF)16
C6  - pmid:29968418
UR  - <Go to ISI:>//WOS:000439935800014
DO  - DOI:10.1002/smll.201801461
UR  - https://juser.fz-juelich.de/record/850308
ER  -