Cationic starch intercalated montmorillonite (Mt-CST) adsorbent was developed for the removal of basic dyes, namely, Basic Blue (BB66) and Basic Yellow (BY1) from aqueous solution. Cationic starches (CST) containing ammonium groups with the degree of substitution of 0.16 (CST1) and 0.69 (CST2) were successfully prepared from the reaction of low molar mass starch with (3-chloro-2-hydroxypropyl trimethyl) ammonium chloride. A series of Mt-CST nanocomposites were prepared by controlling the mass ratios of Mt:CST. Adsorption of BB66 and BY1 from aqueous solution onto Mt-CST was studied. The adsorption capacity increased with decreasing of cationic groups in the CST or increasing the mass ratios of Mt:CST. The results showed that the Mt-CST11 nanocomposite with the mass ratio of Mt:CST1 of 69: 31 exhibited relatively high adsorption capacities for basic dyes. The results of adsorption behaviors of BY1 on Mt-CST11 and Mt-CST21 indicated that the adsorption processes followed well the Langmuir isotherm.

开发了阳离子淀粉插层蒙脱土（Mt-CST）吸附剂，用于从水溶液中去除碱性染料，即碱性蓝（BB66）和碱性黄（BY1）。从低摩尔质量的淀粉与（3-氯-2-羟丙基三甲基）氯化铵反应成功地制备了具有取代度为0.16（CST1）和0.69（CST2）的铵基的阳离子淀粉（CST）。通过控制Mt：CST的质量比，制备了一系列Mt-CST纳米复合材料。研究了BB66和BY1从水溶液到Mt-CST的吸附。随着CST中阳离子基团的减少或Mt：CST的质量比增加，吸附容量增加。结果表明，Mt-CST1的纳米复合材料的质量比为69：31对碱性染料具有较高的吸附能力。BY1在Mt-CST11和Mt-CST21上的吸附行为结果表明，吸附过程遵循Langmuir等温线。