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New Composites LnBDC@AC and CB6@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

机译:新型复合材料LnBDC @ AC和CB 6 @AC:从设计到对亚甲基蓝或甲基橙的选择性吸附

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摘要

New porous composites LnBDC@AC (AC = Activated carbon, Ln = Eu and Gd and BDC = 1,4-benzenedicaboxylate) and CB[6]@AC (CB[6] = Cucurbit[6]uril) were obtained using hydrothermal route. The LnBDC and CB[B] are located inside the pore of the carbon materials as was observed in SEM-EDS, XRPD and FT-IR analysis. Porosimetry analysis showed values typically between AC and LnBDC material, with pore size and surface area, respectively, 29,56 Å and 353.98 m2g-1 for LnBDC@AC and 35,53 Å and 353.98 m2g-1 for CB[6]@AC. Both materials showed good absorptive capacity of metil orange (MO) and methylene blue (MB) with selectivity as a function of pH. For acid pH, both materials present selectivity by MB and alkaline pH for MO, with notable performance for CB[6]@AC. Additionally, europium luminescence was used as structural probe to investigate the coordination environment of Eu3+ ions in the EuBDC@AC composite after adsorption experiment.
机译:使用水热法获得了新的多孔复合材料LnBDC @ AC(AC =活性炭,Ln = Eu和Gd,BDC = 1,4-苯二甲氧基化物)和CB [6] @AC(CB [6] =葫芦[6] uril)。 。如在SEM-EDS,XRPD和FT-IR分析中所观察到的,LnBDC和CB [B]位于碳材料的孔内部。孔隙率分析表明,AC和LnBDC材料之间的值通常相同,孔尺寸和表面积分别为LnBDC @ AC和29.56Å和353.98 m 2 g -1 CB [6] @AC的35,53Å和353.98 m 2 g -1 。两种材料均表现出良好的吸收性,其中甲基橙(MO)和亚甲基蓝(MB)随pH的变化具有选择性。对于酸性pH,这两种材料均对甲基溴具有选择性,而对于甲基溴则呈碱性,对于CB [6] @AC具有显着性能。另外,以euro发光为结构探针,研究了吸附实验后EuBDC @ AC复合物中Eu 3 + 离子的配位环境。

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