| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 642217 | Separation and Purification Technology | 2012 | 5 Pages |
Hexagonal tungsten trioxide (WO3) nanorods were prepared from ammonium metatungstate, tetrapropyl ammonium hydroxide and potassium chloride. The product exhibited a high adsorption capacity toward methylene blue (MB), and the time required for reaching adsorption equilibrium is less than 5 s. The amount of MB adsorbed by WO3 in 5 s was equivalent to that adsorbed by activated carbon for 30 min. FTIR and UV–vis spectroscopies were used to examine the interaction between WO3 and MB. Ionic interaction and “imprinting-adsorption” were proposed to explain the adsorption property of as-prepared WO3 sample.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Hexagonal WO3 nanorods were prepared by calcining organic molecules modified tungsten precursor. ► Prepared WO3 showed fast adsorption property to MB. ► The amount of MB adsorbed by WO3 in 5 s was equivalent to that adsorbed by activated carbon for 30 min. ► The fast adsorption property can be explained by the ionic interactions between WO3 and MB.
