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在碱性条件下,以十六烷基三甲基溴化铵做为模板剂,正硅酸乙酯为硅源,采用水热合成法,并用三甲苯(TMB)对其进行扩孔,获得了一种介孔二氧化硅材料。通过BET、FT-IR、SEM和小角XRD对其进行表征,研究其对铅离子的吸附性能。研究发现扩孔后的介孔二氧化硅对铅离子的吸附量明显高于未扩孔的介孔材料,吸附率达到99.8%。
Under basic conditions, cetyltrimethylammonium bromide was used as a template and tetraethyl orthosilicate was used as a silica source. Hydrothermal synthesis was used to re-expand the sample with trimethylbenzene (TMB) to obtain A mesoporous silica material. The adsorption properties of lead ions were characterized by BET, FT-IR, SEM and small-angle XRD. The results showed that the adsorption capacity of mesoporous silica after reaming was significantly higher than that of non-reaming mesoporous material, and the adsorption rate reached 99.8%.