N- and S-rich covalent organic framework for highly efficient removal of indigo carmine and reversible iodine capture
N- and S-rich covalent organic framework for highly efficient removal of indigo carmine and reversible iodine capture
复制标题
富含氮和硫的共价有机框架，可高效去除靛蓝胭脂红和可逆的碘捕获
DOI：
10.1016/j.micromeso.2019.109990
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发表时间：
2020-04-01
影响因子：
5.2
通讯作者：
Cheng, Guoe
中科院分区：
文献类型：
--
作者：
Pan, Xiaowei;Qin, Xihao;Cheng, Guoe
含有机染料的废水和核废料因其严重的环境问题和辐射对健康的影响而受到世界范围的关注。吸附被认为是一种高效、低成本、环境友好的污染物去除方法。本论文开发了一种新型的共价有机骨架吸附剂（BTT-TAPT-COF），该吸附剂具有丰富的S、N活性中心和扩展的π共轭结构。该COF显示出高结晶度、大表面积和热稳定性。由于多孔结构、富电子杂原子的存在以及大π共轭网络结构，BTT-TAPT-COF对有害染料靛蓝胭脂红的吸附容量为547.33 mg g（-1），对挥发性碘的可逆吸附容量为276 wt%，表现出优异的吸附性能。经过5次循环后，BTT-TAPT-COF的碘吸附容量基本保持不变。
Organic dye containing wastewater and nuclear waste have received more worldwide attention because of the significant environmental problems and the effects of radiation on health. Adsorption is considered to be an efficient, low-cost, and environmentally friendly method for pollutant removal. In this paper, we developed a novel covalent organic framework (BTT-TAPT-COF) adsorbent which contains abundant S and N active sites as well as extended pi-conjugated structure. This COF shows high crystallinity, large surface area, and thermal stability. Due to the porous feature, existence of electron-rich heteroatoms as well as the large pi-conjugated network structure, BTT-TAPT-COF exhibits excellent adsorptive performance for the removal of hazardous dye indigo carmine with an adsorption capacity of 547.33 mg g(-1) and rapid reversible volatile iodine uptake with an adsorption capacity of 276 wt%. After five cycles, BTT-TAPT-COF almost retains the same iodine adsorption capacity with the original adsorbent.