当前位置：
X-MOL 学术
›
Environ. Sci.: Nano
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Smectite clay pillared with copper complexed polyhedral oligosilsesquioxane for adsorption of chloridazon and its metabolites
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2019-11-21 , DOI: 10.1039/c9en00974d Feng Yan 1, 2, 3, 4 , Konstantinos Spyrou 5, 6, 7, 8 , Eleni Thomou 5, 6, 7, 8 , Sumit Kumar 1, 2, 3, 4 , Huatang Cao 2, 4, 9 , Marc C. A. Stuart 2, 3, 4, 10 , Yutao Pei 2, 4, 9 , Dimitrios Gournis 5, 6, 7, 8 , Petra Rudolf 1, 2, 3, 4
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2019-11-21 , DOI: 10.1039/c9en00974d Feng Yan 1, 2, 3, 4 , Konstantinos Spyrou 5, 6, 7, 8 , Eleni Thomou 5, 6, 7, 8 , Sumit Kumar 1, 2, 3, 4 , Huatang Cao 2, 4, 9 , Marc C. A. Stuart 2, 3, 4, 10 , Yutao Pei 2, 4, 9 , Dimitrios Gournis 5, 6, 7, 8 , Petra Rudolf 1, 2, 3, 4
Affiliation
|
Chloridazon has been a widely used herbicide during the past decades, especially in sugar-beet cultivation. UV-induced degradation of chloridazon leads to the formation of desphenyl counterparts, i.e. desphenyl-chloridazon and methyl-desphenyl-chloridazon. Even if accumulation of these residues in natural waters is far from alarming, a low-cost effective and environmentally friendly adsorbent, capable of binding chloridazon and its degradation products is desirable to reduce their concentration in water even further below legal limits. Here we show that pillared smectite clay, prepared by cation exchange of sodium with copper complexed, cage-shaped polyhedral oligomeric silsesquioxane (Cu2+@POSS) could be a promising candidate for this purpose. X-ray diffraction and high resolution transmission electron microscopy evidenced a homogeneous layered structure where the interlayer spacing is enlarged by 7.1 ± 0.2 Å (the diameter of Cu2+@POSS) with respect to the pristine clay. Exposure of this pillared smectite clay to chloridazon and its metabolites in water showed that Cu2+@POSS intercalation significantly improved its adsorption capacity. In addition, after several thermal regeneration cycles, Cu2+@POSS_SWy-2 still exhibited excellent adsorption properties. These findings demonstrate that smectite clay pillared with copper complexed polyhedral oligosilsesquioxane is a promising environmentally friendly and relatively low cost material for herbicide waste remediation.
中文翻译：
以铜配合物多面体低聚倍半硅氧烷为柱基的绿土粘土吸附氯达松及其代谢物
在过去的几十年中，尤其是在甜菜栽培中，氯达唑酮已被广泛用作除草剂。紫外线引起的对氯达宗的降解导致形成脱苯对应物，即脱苯-氯达唑酮和甲基-脱苯-氯达唑酮。即使这些残留物在天然水中的积累不足以引起人们的警觉，也需要一种能够结合十氯酮及其降解产物的低成本有效且环保的吸附剂，以进一步降低其在水中的浓度，甚至低于法律规定的限值。在这里，我们显示了柱状蒙脱石粘土，它是通过钠与铜络合的笼形多面体低聚倍半硅氧烷（Cu 2+@POSS）可能是一个有前途的候选人。X射线衍射和高分辨率透射电子显微镜证明了均匀的层状结构，其中层间间距相对于原始粘土增加了7.1± 0.2Å （Cu 2+ @POSS的直径）。将该柱状蒙脱石粘土暴露于水中的氯达松及其代谢产物表明，Cu 2+ @POSS插层显着提高了其吸附能力。此外，经过几次热再生循环后，Cu 2+@ POSS_SWy-2仍显示出优异的吸附性能。这些发现表明，以铜络合的多面体低聚倍半硅氧烷为支柱的绿土粘土是一种有前景的环保且相对低成本的除草剂废物修复材料。
更新日期：2019-11-21
中文翻译：
以铜配合物多面体低聚倍半硅氧烷为柱基的绿土粘土吸附氯达松及其代谢物
在过去的几十年中，尤其是在甜菜栽培中，氯达唑酮已被广泛用作除草剂。紫外线引起的对氯达宗的降解导致形成脱苯对应物，即脱苯-氯达唑酮和甲基-脱苯-氯达唑酮。即使这些残留物在天然水中的积累不足以引起人们的警觉，也需要一种能够结合十氯酮及其降解产物的低成本有效且环保的吸附剂，以进一步降低其在水中的浓度，甚至低于法律规定的限值。在这里，我们显示了柱状蒙脱石粘土，它是通过钠与铜络合的笼形多面体低聚倍半硅氧烷（Cu 2+@POSS）可能是一个有前途的候选人。X射线衍射和高分辨率透射电子显微镜证明了均匀的层状结构，其中层间间距相对于原始粘土增加了7.1± 0.2Å （Cu 2+ @POSS的直径）。将该柱状蒙脱石粘土暴露于水中的氯达松及其代谢产物表明，Cu 2+ @POSS插层显着提高了其吸附能力。此外，经过几次热再生循环后，Cu 2+@ POSS_SWy-2仍显示出优异的吸附性能。这些发现表明，以铜络合的多面体低聚倍半硅氧烷为支柱的绿土粘土是一种有前景的环保且相对低成本的除草剂废物修复材料。
京公网安备 11010802027423号