| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 594399 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2011 | 8 Pages |
A series of binary free-standing colloidal films, TiO2–MO (M = Mg, Co, Ni, Cu and Zn) have been synthesized via a self-assembly technology, utilizing sodium dodecyl sulfonate (SDS) as template and the mixture of titanium butoxide and MCl2 as precursor. X-ray diffraction (XRD) and transmission electron microscope (TEM) have been employed to characterize TiO2–MO samples. Results show that TiO2–MO films are mainly composed by well-ordered nanostructures (e.g. mesoporous particles and lamellar pieces) and more importantly, the increased Ti(OC4H9)4 precursor have significant effect on modifying the as-synthesized nanostructures. A structural model based on SDS micellar template, the complex metallic oxide precursor and charge-density matching between the template and precursor has been proposed. Remarkably, this template self-assembly method has a potential to design a variety of functional multicomponent materials with high-ordered nanostructures, such as high gas sensing SnO2–ZnO films.
Graphical abstractSchematic diagram for mesoporous (a) and lamellar (b) structures for TiO2–MO films.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► TiO2–MO (M = Mg, Co, Ni, Cu or Zn) colloidal films have been self-assembled. ► TiO2–MO films compose of lamellar and mesoporous nanostructures. ► The increased Ti(OC4H9)4 precursor significantly influence the self-assembled structures.
