钛酸盐纳米材料去除水中重金属离子的研究进展

Research progress of titanate nano materials removing heavy metal ions in water

去除水中的重金属离子使受污染的水体得以修复是一项紧迫和具有挑战性的课题。钛酸盐纳米材料具有比表面积大、离子交换性能强、合成简易、价格低廉、原料来源广泛等优点,作为重金属离子的新型吸附材料,具有良好的吸附效果。综述了钛酸盐纳米材料去除水中重金属离子的研究与最近进展,系统地介绍了重金属离子的吸附效果、吸附机理和影响因素,总结了为降低成本、提高吸附容量而采取的解吸、再生、修饰手段,对该材料未来应用前景进行了展望。

Removing heavy metal ions from contaminated water so as to recover water body is an urgent and challenging task. Titanate nano materials has advantages of large specific surface area, strong ion exchange prop- erty, easy to be synthesized, inexpensive and widespread bent, its adsorption performance on heavy metal ions is sources of raw materials, etc, therefore, as a novel adsor- good. The research progress and current development of the said materials removing heavy metal ions in water were summarized, the effect, mechanism and influencing factors of the adsorption were introduced systematically. Besides, the measures of desorption, regeneration and modification adopted to reduce cost and improve adsorption capacity were summed up, and the application prospect of titanate nano materials was look forward.