Reference : Nanosphere Lithography and Hydrothermal Growth : How to Increase Surface Area and Co...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/126697
Nanosphere Lithography and Hydrothermal Growth : How to Increase Surface Area and Control Reversible Wetting Properties of ZnO Nanowire Arrays ?
English
Colson, Pierre mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Schrijnemakers, Audrey [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Vertruyen, Bénédicte [Université de Liège - ULg > Département de chimie (sciences) > Chimie inorganique structurale >]
Henrist, Catherine [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Cloots, Rudi [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
2012
Journal of Materials Chemistry
Royal Society of Chemistry
22
33
17086-17093
Yes (verified by ORBi)
International
0959-9428
1364-5501
Cambridge
United Kingdom
[en] Zinc Oxide ; Nanowire ; Nanosphere Lithography ; Electron microscopy ; Dye Loading ; Wetting Properties ; Patterning Technique
[en] Due to their large surface-area-to-volume ratio as well as their interesting intrinsic optical and electronic properties, ZnO 1D nanostructures are part of the few dominant materials for nanotechnology. In this article, we compare two different routes of using the nanosphere lithography for the manufacturing of well-aligned, density-controlled ZnO nanowires by low-temperature hydrothermal growth. The first route uses the colloidal mask as a template for the patterned growth of the nanowires, while in the second route, the nanospheres act as a mask to pattern the seed layer. SEM and XRD characterizations are performed on samples manufactured by both routes and evidence patterned well-aligned nanowires with high c-axis texturing in the first synthetic route. Oriented growth is less pronounced in the second route, as well as the ability to adsorb dye. However, for the first route the dye loading measurements reveal that the amount of N-719 adsorbed is higher than on unpatterned ZnO nanowires films, highlighting an increased interface area. Reversible hydrophobicity to superhydrophilicity transition was observed and intelligently controlled by alternation of UV illumination and dark storage. This promising synthetic route opens exciting perspectives for the production of ZnO nanowire arrays with tunable density, wetting properties and enhanced adsorption properties.
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Région wallonne : Direction générale des Technologies, de la Recherche et de l'Energie - DGTRE
NANOROD
http://hdl.handle.net/2268/126697

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