Facile Preparation of Efficient WO3Photocatalysts Based on Surface Modification
| Autor: | Min Liu, Yangsu Zeng, Hongmei Li |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nanocomposite Article Subject Scanning electron microscope Photochemistry Tungsten trioxide Nanoclusters chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy lcsh:Technology (General) Titanium dioxide Photocatalysis lcsh:T1-995 Surface modification General Materials Science |
| Zdroj: | Journal of Nanomaterials, Vol 2015 (2015) |
| ISSN: | 1687-4129 1687-4110 |
| DOI: | 10.1155/2015/502514 |
| Popis: | Tungsten trioxide (WO3) was surface modified with Cu(II) nanoclusters and titanium dioxide (TiO2) nanopowders by using a simple impregnation method followed by a physical combining method. The obtained nanocomposites were studied by scanning electron microscope, X-ray photoelectron spectroscopy spectra, UV-visible light spectra, and photoluminescence, respectively. Although the photocatalytic activity of WO3was negligible under visible light irradiation, the visible light photocatalytic activity of WO3was drastically enhanced by surface modification of Cu(II) nanoclusters and TiO2nanopowders. The enhanced photocatalytic activity is due to the efficient charge separation by TiO2and Cu(II) nanoclusters functioning as cocatalysts on the surface. Thus, this simple strategy provides a facile route to prepare efficient visible-light-active photocatalysts for practical application. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text