Direct carbonization of Zn/Co zeolitic imidazolate frameworks for efficient adsorption of Rhodamine B
Direct carbonization of Zn/Co zeolitic imidazolate frameworks for efficient adsorption of Rhodamine B
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直接碳化 Zn/Co 沸石咪唑酯骨架以有效吸附罗丹明 B
DOI：
10.1016/j.cej.2018.04.132
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发表时间：
2018-09
影响因子：
15.1
通讯作者：
Zhou Min
中科院分区：
文献类型：
--
作者：
Zhang Jiajin;Yan Xinlong;Hu Xiaoyan;Feng Rui;Zhou Min
近年来，以沸石咪唑骨架（ZIFs）为前驱体制备高纳米孔碳材料，由于其结构的多样性以及碳和金属的双重特性，受到了广泛关注。为了进一步探索ZIFs衍生炭的性质和应用，本文合成了ZIFs/Zn/Co，并将其作为自牺牲模板和碳源用于多孔炭的制备。采用900 °C直接碳化法制备了具有磁性的多级多孔炭，并将其用于吸附水中的罗丹明B（RhB）。为了比较，还合成、表征和测试了ZIF-8-和ZIF-67-衍生的碳的RhB吸附。结果表明，与ZIF-8和ZIF-67衍生的碳相比，Zn/Co ZIF衍生的碳表现出最高的RhB吸附容量，并且可以通过外部磁场容易地从水中分离。吸附等温线符合Langmuir模型，吸附动力学符合准二级动力学模型。此外，Zn/Co ZIF衍生的碳可以通过乙醇洗涤再生并重复使用至少6次而没有显著的容量损失。
Using zeolitic imidazolate frameworks (ZIFs) as precursors to yield highly nanoporous carbon materials for clean energy applications have received great attention in recent years, because of its diverse structure and dual characteristics from carbon and metals. To further explore the property and application of ZIFs-derived carbons, herein, bimetallic Zn/Co ZIFs were synthesized and used as self-sacrificial templates and carbon sources for the preparation of porous carbons. By direct carbonization at 900 °C, hierarchical porous carbon with magnetic properties was obtained in which highly dispersed Co nanoparticles were found. The as-prepared carbons were further used as adsorbents for the removal of Rhodamine B (RhB) from water. For comparison, ZIF-8- and ZIF-67-derived carbons were also synthesized, characterized and tested for RhB adsorption. The results show that Zn/Co ZIF-derived carbon exhibited the highest RhB adsorption capacity compared to ZIF-8- and ZIF-67-derived carbons, and it could be easily separated from water by an external magnetic field. The adsorption isotherm data conform to the Langmuir model, and the adsorption kinetic data obey a pseudo-second-order model. Moreover, Zn/Co ZIF-derived carbons can be regenerated by ethanol washing and reused at least 6 times without a significant loss in capacity.
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影响因子：
4.2
作者：
E. A. Fletcher
通讯作者：
E. A. Fletcher
DOI：
10.1039/c6cp05555a
发表时间：
2016-10
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Christine Young;R. R. Salunkhe-R.;Jing Tang;Chi-Chang Hu;M. Shahabuddin;E. Yanmaz;M. S. Hossain;Jung H
通讯作者：
Christine Young;R. R. Salunkhe-R.;Jing Tang;Chi-Chang Hu;M. Shahabuddin;E. Yanmaz;M. S. Hossain;Jung H
用沸石咪唑酯框架 67 吸附去除水中 1-萘酚
影响因子：
4
作者：
Yan Xinlong;Hu Xiaoyan;Chen Tao;Zhang Shiyu;Zhou Min
通讯作者：
Zhou Min
合成介孔碳囊泡及其纳米复合材料的水乳液路线
影响因子：
29.4
作者：
Gu, Dong;Bongard, Hans;Zhao, Dongyuan
通讯作者：
Zhao, Dongyuan
影响因子：
5.2
作者：
Hu, Xiaoyan;Yan, Xinlong;Komarneni, Sridhar
通讯作者：
Komarneni, Sridhar