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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A 1D anionic lanthanide coordination polymer as an adsorbent material for the selective uptake of cationic dyes from aqueous solutions
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A 1D anionic lanthanide coordination polymer as an adsorbent material for the selective uptake of cationic dyes from aqueous solutions

机译：一维阴离子镧系配位聚合物作为吸附材料，可从水溶液中选择性吸收阳离子染料

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摘要

A 1D anionic lanthanide coordination polymer {[(CH3)(2)NH2] [(H(2)abtc)(2)Ho(H2O)]}(n) (1) (H(4)abtc = 3,3', 5,5'-azobenzene-tetracarboxylic acid) has been synthesized under hydrothermal reaction conditions. The protonated [(CH3)(2)NH2](+) is generated from decomposed DMA during the reaction, and balances the negative charge of the framework. The as-obtained samples were characterized using single-crystal and powder X-ray diffraction and TGA. Interestingly, 1 can selectively capture cationic dye molecules from mixtures of dye molecules containing different charges in aqueous solutions. Furthermore, 1 exhibits a different adsorption efficiency toward different cationic dyes (crystal violet, rhodamine B, safranine T and methylene blue). Among the studied dyes, methylene blue has a higher adsorption efficiency in comparison to the others. Thus, complex 1 could serve as a good candidate material for the selective removal of cationic dyes during the treatment of wastewater.
机译：一维阴离子镧系配位聚合物{[（（CH3）（2）NH2] [（H（2）abtc）（2）Ho（H2O）]}（n）（1）（H（4）abtc = 3,3' ，在水热反应条件下合成了5,5'-偶氮苯-四羧酸）。在反应过程中，由分解的DMA生成质子化的[（CH3）（2）NH2]（+），并平衡框架的负电荷。使用单晶和粉末X射线衍射以及TGA对获得的样品进行表征。有趣的是，1可以从水溶液中含有不同电荷的染料分子混合物中选择性捕获阳离子染料分子。此外，1对不同的阳离子染料（结晶紫，若丹明B，番红花T和亚甲基蓝）表现出不同的吸附效率。在研究的染料中，与其他染料相比，亚甲基蓝具有更高的吸附效率。因此，配合物1可以作为废水处理中选择性去除阳离子染料的良好候选材料。

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