金属有机框架UiO-66-(COOH)2吸附亚甲基蓝的作用机制

被引:2
|
作者
王洪婷
罗时万
郭志伟
张蓉
杨犁
覃远航
机构
[1] 武汉工程大学化工与制药学院,绿色化工过程教育部重点实验室(武汉工程大学),新型反应器与绿色化工技术湖北省重点实验室(武汉工程大学)
关键词
UiO-66; 吸附; 亚甲基蓝; 作用机制;
D O I
10.19843/j.cnki.CN42-1779/TQ.202204028
中图分类号
X703 [废水的处理与利用]; TQ424 [吸附剂];
学科分类号
摘要
为减少染料废水的排放造成的环境污染,分别采用溶剂热法和机械搅拌法制备了金属有机骨架材料UiO-66和羧基改性材料UiO-66-(COOH)2,研究了两种吸附剂对有机染料亚甲基蓝(MB)的吸附性能,并探讨了相应的吸附机理。结果表明:UiO-66和UiO-66-(COOH)2对MB均具有较好的吸附能力,UiO-66-(COOH)2对MB的平衡吸附量达416.95 mg/g,比UiO-66材料提高了38.6%。UiO-66-(COOH)2对MB的高效吸附是静电相互作用、π-π相互作用和氢键作用等多重机制共同作用的结果。吸附过程符合拟二级动力学模型,吸附平衡符合Freundlich吸附模型。
引用
收藏
页码:139 / 147
页数:9
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