科研之友
微信
新浪微博
Facebook
分享链接
摘要
Titanate nanoflowers were synthesized through the hydrothermal reaction between anatase nanopowders and concentrated NaOH solution. The micrometer-sized nanoflower was assembled by many ultrathin nanosheets growing outside from a common central zone. This hierarchical structure with large surface area shows availability for the removal of organic pollutants from wastewater. Comparing with titanate nanotubes/nanowires, titanate nanoflowers show larger adsorption capacity and faster kinetics for the adsorption of methylene blue, and higher photocatalytic activity for the dye degradation. For titanate nanoflowers, the equilibrium data fit well with the Langmuir model with maximum monolayer adsorption capacity of 4.6e-4 mol/g; the sorption kinetics can be described by the pseudo-second-order model, and the overall adsorption process is controlled by the intra-particle diffusion mechanism; the adsorbed dye and the residual dye could be degraded completely by the subsequent photocatalysis.
- 出版日期2012-5-15
- 单位中国科学院福建物质结构研究所
