germanium has been researched along with thionine* in 1 studies
1 other study(ies) available for germanium and thionine
| Article | Year |
|---|---|
Layer-by-layer self-assembly polytungstogermanate multilayer films and their photocatalytic properties under sunlight irradiation.
The dilacunary decatungstogermanate [γ-GeW(10)O(36)](8-) (GeW(10)) and the monolacunary undecatungstogermanate [β(2)-GeW(11)O(39)](8-) (GeW(11)) were employed as polyanions to layer-by-layer self-assembly with cationic thionine (TH) dye. The (GeW(10)/TH)(n) and (GeW(11)/TH)(n) composite films were characterized by UV-vis spectra, atomic force microscopy images (AFMs) and cyclic voltammograms (CV). Their photocatalytic activities were evaluated by photocatalytic degradation of methyl orange aqueous solution under sunlight irradiation. The results indicated that the (GeW(10)/TH)(n) and (GeW(11)/TH)(n) films exhibited the sunlight photocatalytic activities for methyl orange (MO) solution. The dye molecule TH extended the light absorption spectrum of polyoxometalates toward the visible light region. The photocatalytic mechanism of composite films was also discussed. Topics: Azo Compounds; Catalysis; Coloring Agents; Germanium; Phenothiazines; Photochemical Processes; Polyelectrolytes; Polymers; Sunlight; Tungsten; Tungsten Compounds | 2011 |