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通过反应使羧甲基壳聚糖以化学键负载到蒙脱土中得到复合材料。利用红外光谱(FT-IR)、热重分析(TG)及扫描电镜(SEM)对得到的复合材料进行表征,并通过紫外可见分光光度计对蒙脱土及复合材料吸附邻苯二酚紫的性能进行探讨。结果表明,羧甲基壳聚糖与蒙脱土达到分子水平的复合,改善了其亲水疏油性。复合材料吸附剂用量为0.05g,投土量0.05g,吸附时间30min,pH 6时邻苯二酚紫吸附率可达99.0%,吸附量达19.04mg/g。复合材料的吸附效果比蒙脱土有较大提高。
Through the reaction of carboxymethyl chitosan chemically bonded to the montmorillonite to obtain a composite material. The composites were characterized by FT-IR, TG and SEM. The adsorption of catechol violet on montmorillonite and its composites by UV-visible spectrophotometer Performance to explore. The results show that the carboxymethyl chitosan and montmorillonite to achieve molecular level of composite, to improve its hydrophilic and oleophobic. The amount of composite adsorbent 0.05g, soil dosage 0.05g, adsorption time 30min, pH 6, catechol purple adsorption rate of 99.0%, the adsorption capacity of 19.04mg / g. Composite adsorption effect than montmorillonite have greatly increased.