南京大学学报(自然科学版) ›› 2013, Vol. 49 ›› Issue (6): 762.
侯雅琨1,吴平霄1,2,3,朱能武1,2,3
Hou Ya-kun 1, Wu Ping-xiao 1, 2, 3, Zhu Neng-wu 1, 2, 3
摘要: 以十六烷基三甲基溴化铵(CTAB)对累托石进行改性。采用XRD、FTIR、Zeta电位仪等表征手段对改性前后的材料进行表征,结果显示CTAB成功通过离子交换作用插层进入累托石层间,并改变了累托石的表面电荷。通过DNA浓度、溶液pH、解吸率等变量对比研究改性前后累托石对DNA的吸附性能。结果显示,改性后累托石对DNA的吸附量大大增加,能适应不同pH条件,吸附稳定性也显著增强。
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