骨架含强配位基的有机无机杂化多级孔材料合成是目前吸附研究的一个重要领域.以bis(hexamethylene)triamino-N,N-bisacetyl-phosphonic acid和ZrOCl2·8H2O为原料、应用水热合成技术合成了一种新型膦酸锆多级孔材料ZrPTA,并通过FT-IR、TGA、XRD、XPS、SEM以及元素分析等手段对制备产物进行了表征.研究结果表明,ZrPTA具有棒状微形貌,其内部存在大量直径为1.38 nm和1.93 nm的微孔以及直径为2.99 nm的介孔,其表面积为112.2 m2/g.ZrPTA对水溶液中Pb2+、Cu2+和Cd2+三种金属离子具有良好的吸附作用,最大吸附量分别为742.7、689.8和627.0 mg/g,远远高于文献报道值.这一性质使ZrPTA具有潜在的废水处理功效,显示出诱人的应用前景.
Synthesis of organic-inorganic hybrid hierarchical porous materials with strong ligand in framework is an important field of current research in adsorption. A new kind of inorganic/organic hierarchical zirconium phos-phonate material (ZrPTA) with porous structure was prepared from bis(hexamethylene)triamino-N, N-bisacetyl-phosphonic acid and ZrOCl2·8H2O in water solution by using hydrothermal synthesis technology. The samples were characterized by FT-IR spectroscope, TGA, XRD, XPS, SEM and element analysis. The results show that the mate-rial possesses a rod-like morphology, and the rods contain micropores of 1.38 nm and 1.93 nm in diameter, mesopores of 2.99 nm in diameter, and a surface area of ~112.2 m2/g. The as-prepared ZrPTA is more efficient in removing Pb2+, Cu2+ and Cd2+ from wastewater. Its maximum adsorption capacities for Pb2+, Cu2+ and Cd2+ are 742.7, 689.8 and 627.0 mg/g, respectively, which is much higher than the maximum adsorption capacities of the adsorbents reported. The perfect properties make the material good prospects in application as an adsorbent in wastewater processing.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%