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CMS@NH_2-CAU-10对染料废水中结晶紫的吸附研究

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摘要 采用溶剂热合成法,将金属盐、含氨基的配体和溶剂在一定条件下合成表面具有NH2-CAU-10的化合物,再将其与羧甲基淀粉(CMS)溶液在一定温度下混合分散,制得CMS@NH2-CAU-10。利用FTIR、XRD对吸附前后的材料进行对比,测定其化学结构、孔结构和稳定性。通过测定不同比例下制备的CMS@NH2-CAU-10对结晶紫的吸附量及吸附率,筛选出了吸附效果最佳的CMS@NH2-CAU-10,分析了离子强度、pH对其吸附作用的影响,通过实验得到了其吸附动力学曲线与吸附热力学曲线。吸附动力学过程符合BoxLucas1模型,吸附等温模型符合Langmuir模型。最终确认以7.5mL的质量浓度为44.47g/L的CMS溶液与NH2-CAU-10合成的CMA@NH2-CAU-10在pH=8、离子强度=0.02的环境下对结晶紫的吸附性能最佳。
出处 《大众科技》 2024年第4期116-121,共6页 Popular Science & Technology
基金 广西石化资源加工及过程强化技术重点实验室项目“淀粉基多孔碳材料对石化废水中酚类的吸附及分离研究”(2021Z009)。
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