Ultrahigh adsorption capacities of carbon tetrachloride on MIL-101 and MIL-101/graphene oxide composites
Ultrahigh adsorption capacities of carbon tetrachloride on MIL-101 and MIL-101/graphene oxide composites
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MIL-101和MIL-101/氧化石墨烯复合材料对四氯化碳的超高吸附能力
DOI：
10.1016/j.micromeso.2017.12.007
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发表时间：
2018-06
影响因子：
5.2
通讯作者：
Yunlin Chen
中科院分区：
文献类型：
--
作者：
Yue Zheng;Fuchen Chu;Bing Zhang;Jun Yan;Yunlin Chen
采用水热合成方法制备了MIL-101(Cr)和氧化石墨烯(GrO)的杂化复合材料。使用扫描电子显微镜、X射线衍射、FT-IR光谱、热分析和氮气吸附对合成材料进行了表征。结果表明，MIL-101/GrO-0.25的比面积和孔容远高于纯MIL-101，并且MIL-101(Cr)/GrO对四氯化碳的吸附能力也高于MIL-101。此外，Langmuir-Freundlich (L-F) 方程很好地拟合了四氯化碳的吸附等温线数据。结果表明，在303 K下，MIL-101对四氯化碳的吸附容量为2044.4 mg/g，在MIL-101/GrO-0.25上的吸附量高达2368.1 mg/g，较原MIL-101增加了16%。由于比面积、色散力和晶体表面缺陷的增加，合成的 MIL-101/GrO 复合材料表现出比普通 MIL-101 更高的四氯化碳吸收能力。此外，MIL-101 和 MIL-101/GrO 复合材料的四氯化碳吸收量远高于传统吸附剂（例如活性炭和沸石）的吸收量。结果表明，MIL-101和MIL-101/GrO复合材料是在氯化挥发性有机化合物（Cl-VOCs）吸附领域很有前景的吸附剂。
Hybrid composites of MIL-101(Cr) and graphene oxide (GrO) were prepared using a hydrothermal synthesis method. The synthesized materials were characterized using scanning electron microscopy, X-ray diffraction, FT-IR spectroscopy, thermal analysis and nitrogen adsorption. Results indicated that the specific area and pore volume of MIL-101/GrO-0.25 was much higher than pure MIL-101, and the adsorption capacities of carbon tetrachloride on the MIL-101 (Cr)/GrO was also higher than MIL-101. Moreover, the Langmuir-Freundlich (L-F) equation gave a well fit to the adsorption isotherm data of carbon tetrachloride. The result showed that the adsorption capacity of carbon tetrachloride on the MIL-101 at 303 K was 2044.4 mg/g, and the adsorbing amount on the MIL-101/GrO-0.25 was up to 2368.1 mg/g, which increased by 16% in comparison with the original MIL-101. The synthesized MIL-101/GrO composites exhibited a higher carbon tetrachloride uptake capacity than normal MIL-101 owing to the increasing of specific area, dispersion forces and defects on the crystal surface. Furthermore, the carbon tetrachloride uptakes of MIL-101 and MIL-101/GrO composites were well above those of conventional adsorbents, such as activated carbons and zeolites. It was demonstrated that the MIL-101 and MIL-101/GrO composite are promising adsorbents for application in the field of chlorinated volatile organic compounds (Cl-VOCs) adsorption.
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影响因子：
15.1
作者：
Khan, Nazmul Abedin;Kang, In Joong;Jhung, Sung Hwa
通讯作者：
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影响因子：
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影响因子：
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通讯作者：
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影响因子：
6.4
作者：
Chakraborty, Anutosh
通讯作者：
Chakraborty, Anutosh