氧化石墨烯/UiO-66对二氧化碳的变压吸附研究

Tunable fabrication of graphene oxide/UiO-66 and pressure swing adsorption of CO_2

采用水热法制备了氧化石墨烯(GO)与金属有机框架化合物UiO-66的复合材料。通过XRD衍射仪、傅立叶红外、扫描电子显微镜以及氮气吸脱附测试了样品的微观结构及孔结构参数。测试结果表明,金属有机框架化合物UiO-66与GO成功复合,并且随着GO含量的增加,金属纳米颗粒趋向于均匀分布在GO表面。初步考察了复合材料的孔结构及其对二氧化碳气体吸附性能,结果表明,随着GO含量的增加,对二氧化碳的吸附呈线性增加,说明随着金属有机框架化合物的均匀分散,GO与UiO-66的协同作用得以发挥。

The GO/UiO-66 composites were prepared by a facial solvent thermal method. The microstructure and pore properties were investigated by XRD,FTIR,SEM and Nitrogen adsorption and desorption. The results show that GO/UiO-66 composites were successfully prepared. The UiO-66 nano particles were even loaded on the surface of GO. The pore structure of the composite and its adsorption properties for carbon dioxide gas were preliminarily investigated. As of the adsorption of CO2 was increasing linearly owing to the synergistic effect of GO and UiO-66. It is shown that the synergistic effect of GO and UiO-66 can be achieved with the homogeneous dispersion of metal-organic compounds.