College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
J Colloid Interface Sci. 2013 Sep 1;405:157-63. doi: 10.1016/j.jcis.2013.05.024. Epub 2013 May 23.
In this work, metal-organic framework MIL-53(Al){Al(OH)[O2C-C6H4-CO2]} and MIL-53(Al)-F127{Al(OH)[O2C-C6H4-CO2]} were synthesized and used as sorbents to remove bisphenol A (BPA) from aqueous system. The sorption kinetics data of BPA were found to be in agreement with the pseudo-second-order model. The equilibrium sorption amounts of BPA on MIL-53(Al) and MIL-53(Al)-F127 reached 329.2±16.5 and 472.7±23.6 mg g(-1), respectively, far more than that of commercial activated carbons (ranging from 129.6 to 263.1 mg g(-1)). Both MIL-53(Al) and MIL-53(Al)-F127 could remove BPA fast from aqueous solutions, and the required contact time to reach equilibrium was approximately 90 min for MIL-53(Al) and 30 min for MIL-53(Al)-F127, respectively. The optimum pH levels for the removal of BPA using MIL-53 (Al) and MIL-53(Al)-F127 were 4 and 6 separately. The optimum temperature for the sorption behavior of BPA on the two sorbents was 20 °C. The results performed show that the resulting products, as one kind of MOFs, can be regarded as a new class of sorbents for water treatment and could find great applications in the fields of environmental water pollution control and resources reuse.
在这项工作中，合成了金属有机骨架 MIL-53(Al){Al(OH)[O2C-C6H4-CO2]}和 MIL-53(Al)-F127{Al(OH)[O2C-C6H4-CO2]}，并将其用作吸附剂从水溶液中去除双酚 A (BPA)。BPA 的吸附动力学数据符合准二级模型。MIL-53(Al)和 MIL-53(Al)-F127 对 BPA 的平衡吸附量分别达到 329.2±16.5 和 472.7±23.6 mg g(-1)，远远超过商业活性炭的吸附量（129.6 至 263.1 mg g(-1)）。MIL-53(Al)和 MIL-53(Al)-F127 都能快速从水溶液中去除 BPA，达到平衡所需的接触时间分别约为 90 min 和 30 min。使用 MIL-53(Al)和 MIL-53(Al)-F127 去除 BPA 的最佳 pH 值分别为 4 和 6。两种吸附剂对 BPA 的吸附行为的最佳温度为 20 °C。结果表明，作为一种金属有机骨架材料，所得产物可以作为一种新型的水处理吸附剂，在环境水污染控制和资源再利用等领域具有广阔的应用前景。
