胺基功能化HMS介孔分子筛的表征及其对重金属离子的吸附性能

 以接枝法合成了胺基功能化HMS介孔分子筛，采用元素分析、酸碱滴定、银量滴定、X-射线衍射分析、N2吸附-脱附、红外光谱和热重分析手段进行了表征，并进行了重金属离子吸附性能实验。结果表明，HMS表面成功地接枝上了胺基。胺基功能化后HMS对重金属离子吸附能力增强，并且随着样品表面胺基含量增加而增强。连续使用3次后，以HMS-NH2-6样品为例，对Cu2+和Cd2+的重金属离子吸附率仍保持在81.32%和88.54%，表明该样品具有较好的重复使用性能。

CHARACTERIZATION OF AMINO FUNCTIONALIZED HMS MESOPOROUS MOLECULAR SIEVE AND ITS ADSORPTION PERFORMANCE OF HEAVY METAL IONS

The amino functionalized HMS mesoporous molecular sieve was prepared by grafting method, and characterized by element analysis, acid-base titration, argentometric titration, x-ray diffraction analysis, N2 adsorption-desorption, infrared spectra and thermogravimetric analysis. The adsorption experiments of Cu2+ and Cd2+ on the amino functionalized HMS were also carried out. The results indicated that the amino group was successfully grafted to the surface of HMS. The adsorption performance of heavy metal ions on amino functionalized HMS was better than that on HMS and increased along with the increase of amino content on functionalized HMS. After three times of use, the adsorption ratio of Cu2+ and Cd2+ on amino functionalized HMS sample of HMS-NH2-6 still remained at 81.32% and 88.54%, respectively, indicating that the sample has good recycle usage performance.