| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 150351 | Chemical Engineering Journal | 2012 | 6 Pages |
Titanate nanoflowers were synthesized through a facile hydrothermal treatment of anatase nanopowders in concentrated NaOH solution. The as-obtained nanoflowers have large specific surface area and show availability for the removal of heavy metal ions from water system. Comparative studies exhibit that titanate nanoflowers possess larger adsorption capacity and more rapid kinetics than titanate nanotubes/nanowires. Furthermore, they also show high selectivity in the removal of highly toxic heavy metal ion (Cd(II)) than less toxic ions (Zn(II) and Ni(II)). This study highlights that titanate nanoflowers are potential adsorbents for efficient removal of toxic metal ions. The adsorption mechanism was also discussed. It is found that the equilibrium data fitted well with the Langmuir model, while the adsorption kinetics followed the preudo-second-order model.
Graphical abstractTitanate nanoflowers have been tested as a new adsorbent for heavy metal ions removal from wastewater and shown large adsorption capacity, fast kinetics and high selective adsorption.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Formation of titanate nanoflowers and their application as adsorbents in wastewater treatment were reported. ► Titanate nanoflowers show large adsorption capacity and fast kinetics for the adsorption of heavy metal ions. ► Titanate nanoflowers show high selectivity in the removal of different cations.
