3D Cationic Polymeric Network Nanotrap for Efficient Collection of Perrhenate Anion from Wastewater
3D Cationic Polymeric Network Nanotrap for Efficient Collection of Perrhenate Anion from Wastewater
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DOI：
10.1002/smll.202007994
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发表时间：
2021-03-21
期刊：
影响因子：
13.3
通讯作者：
Ma, Shengqian
中科院分区：
文献类型：
--
作者：
Li, Xiaorui;Li, Yiming;Ma, Shengqian
铼是自然界中发现的最有价值的元素之一，其捕获和回收对于资源回收是非常可取的。然而，从工业废物中有效和高效地收集这种材料仍然具有相当大的挑战性。在此，四苯基甲烷为基础的阳离子聚合物网络（CPN-tpm）的纳米陷阱的设计，合成，并评估ReO 4-回收。3D构建单元用于构建具有正电荷的咪唑鎓盐基聚合物，其产生用于ReO 4收集以及快速动力学ReO 4吸收的1133 mg g（-1）的创纪录最大吸收容量。在20 min内达到吸附平衡，得到的k（d）值为8.5 × 10（5）mL g（-1）。CPN-tpm的吸附能力在很宽的pH值范围内保持稳定，pH值低于2时，去除效率超过60%。此外，CPN-tpm表现出良好的可回收性，至少五个循环的吸附-解吸过程。本工作为构建一种新型高性能聚合物材料用于废水回收和含砷工业废水处理提供了一条新的途径。
Rhenium is one of the most valuable elements found in nature, and its capture and recycle are highly desirable for resource recovery. However, the effective and efficient collection of this material from industrial waste remains quite challenging. Herein, a tetraphenylmethane-based cationic polymeric network (CPN-tpm) nanotrap is designed, synthesized, and evaluated for ReO4- recovery. 3D building units are used to construct imidazolium salt-based polymers with positive charges, which yields a record maximum uptake capacity of 1133 mg g(-1) for ReO4- collection as well as fast kinetics ReO4- uptake. The sorption equilibrium is reached within 20 min and a k(d) value of 8.5 x 10(5) mL g(-1) is obtained. The sorption capacity of CPN-tpm remains stable over a wide range of pH values and the removal efficiency exceeds 60% for pH levels below 2. Moreover, CPN-tpm exhibits good recyclability for at least five cycles of the sorption-desorption process. This work provides a new route for constructing a kind of new high-performance polymeric material for rhenium recovery and rhenium-contained industrial wastewater treatment.