| Climate change has posed a serious problem due to the greenhouse effect caused by excess carbon dioxide emissions.The research toward effect carbon capture technology is therefore of para importance.As a new class of porous solid-state material,metal-organic frameworks(MOFs)have received great attention due to their potential application relevant to carbon dioxide sorption.The thesis has been focusing on the following studies,i.e.design,synthesis and properties of series amide-functionalized MOFs based on indium-containing chains-shaped molecular building blocks,and synthesis,structure and properties of dual-functional polycatenated MOF compound.(1)Compounds 1-3 have been designed and synthesized by virtue of the utilizations of non-amide-functional,urea-functional and oxamide-functional organic linkers,which were characterized by single crystal X-ray diffraction,powder X-ray diffraction,thermal gravimetric analysis and sorption/separation measurements.Structurally,compounds 1-3 are composed of zigzag ladder,corner-and edge-sharing mixed triangle/quadrangle/tetrahedron and edge-sharing mixed quadrangle/tetrahedron secondary building units,respectively,resulting in rhombic,quadrangular and square 1D channels.Regarding the properties,compound 3 displays "narrow pore phase"microporous sorption isotherm and capabilities toward carbon capture and natural gas storage as well as dye adsorption performances including diverse dye molecules even industrial RB21.(2)A dual-functional hetero-metallic MOF compound 4 has been successfully isolated,which was characterized by single crystal X-ray diffraction,powder X-ray diffraction,thermal gravimetric analysis and sorption/separation measurements.Compound 4 features an interesting 2D+2D→3D polycatanated structure along with repelete sulfonate,urea-functional and open sodium metal sites within the 1D channels,leading to good CO2 selective adsorption performances,binary gases dynamic breakthrough experiments confirm them. |
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