摘要
采用水热法制备了以四氯化钛为前驱物的钛柱撑蒙脱石,通过X射线衍射、热质量与差热分析和透射电子显微镜等手段对其结构进行表征,并研究其对水体中砷酸根的吸附作用.结果表明,水热法制备未经热处理的钛柱撑蒙脱石由于具有颗粒均匀、晶型完整、良好的稳定性以及高比表面积和表面羟基含量多等特点,对水体中的砷酸根有良好的吸附效果.随着对钛柱撑蒙脱石热处理温度升高,材料对水体中砷酸根的吸附能力呈明显下降趋势.
Titanium pillared montmorillonite(Ti-MMT) with TiCl4 as the precursors were prepared by hydrothermal method and characterized using X-ray diffraction(XRD) , thermal gravimetric analysis-differential thermal analysis (TGA-DTA) and transmission electron microscopy (TEM). Furthermore, the adsorption of arsenate in water on Ti-MMT were conducted. The results indicate that Ti-MMT prepared by hydrothermal method without thermal treatment has effective adsorption of arsenate in water due to its good homogeneous particle size, high crystallization integrity, good stability, high specific surface areas and surface hydroxyl contents. As the thermal treatment temperature of Ti-MMT increased, the adsorption of arsenate in water obviously decreased.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2007年第3期275-279,共5页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金资助项目(20676094)
天津市自然科学基金资助项目(06YFJMJC04600)
云南省省院省校合作基金资助项目(2004YX03).
关键词
钛柱撑蒙脱石
水热法
砷酸根
吸附
titanium pillared montmorillonite
hydrothermal method
arsenate
adsorption