以氧氯化锆和硅酸钠的盐溶液为原料,采用共沉淀法制备了硅-锆复合的新型除氟材料(Si-Zr),利用SEM、FTIR和XRD分析了其表面形态和内部结构特征,并研究了相关的制备参数对材料除氟性能的影响.结果表明,600℃高温焙烧条件下的新型Si-Zr表面孔隙结构发达,比表面积大,有利于材料对氟离子的吸附;材料中Zr与Si以Si—O—Zr复合氧化物的形态结合,其性质结构稳定,对氟离子吸附后不易脱附.在制备参数中,焙烧温度、硅与锆摩尔比和焙烧时间对材料除氟性能的影响较大.
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