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UiO-66-NH2/GO Composite: Synthesis, Characterization and CO2 Adsorption Performance

1
School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224000, China
2
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
3
Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(4), 589; https://doi.org/10.3390/ma11040589
Received: 26 March 2018 / Revised: 8 April 2018 / Accepted: 9 April 2018 / Published: 11 April 2018
(This article belongs to the Section Porous Materials)
In this work, a new composite materials of graphene oxide (GO)-incorporated metal-organic framework (MOF)(UiO-66-NH2/GO) were in-situ synthesized, and were found to exhibit enhanced high performances for CO2 capture. X-ray diffraction (XRD), scanning electron microscope (SEM), N2 physical adsorption, and thermogravimetric analysis (TGA) were applied to investigate the crystalline structure, pore structure, thermal stability, and the exterior morphology of the composite. We aimed to investigate the influence of the introduction of GO on the stability of the crystal skeleton and pore structure. Water, acid, and alkali resistances were tested for physical and chemical properties of the new composites. CO2 adsorption isotherms of UiO-66, UiO-66-NH2, UiO-66/GO, and UiO-66-NH2/GO were measured at 273 K, 298 K, and 318 K. The composite UiO-66-NH2/GO exhibited better optimized CO2 uptake of 6.41 mmol/g at 273 K, which was 5.1% higher than that of UiO-66/GO (6.10 mmol/g). CO2 adsorption heat and CO2/N2 selectivity were then calculated to further evaluate the CO2 adsorption performance. The results indicated that UiO-66-NH2/GO composites have a potential application in CO2 capture technologies to alleviate the increase in temperature of the earth’s atmosphere. View Full-Text
Keywords: graphene oxide (GO); metal-organic framework (MOF); UiO-66-NH2; carbon dioxide adsorption graphene oxide (GO); metal-organic framework (MOF); UiO-66-NH2; carbon dioxide adsorption
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Cao, Y.; Zhang, H.; Song, F.; Huang, T.; Ji, J.; Zhong, Q.; Chu, W.; Xu, Q. UiO-66-NH2/GO Composite: Synthesis, Characterization and CO2 Adsorption Performance. Materials 2018, 11, 589.

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