Research On Single Phase Microstructures Of Alcohol/Alkane/Water/Ionic Liquid/Salt Ternary Partially Miscible Systems

As is known,the phase behavior exists in the multi-component liquid-liquid mixture systems,and the microstructure is depending on the chemical structures of the components,composition of the mixture,temperature,and pressure.However,few research on the internal microstructure of the partially miscible mixed system near the phase boundary is reported.In order to explore its nano-domain structure,this paper selected three types of partially miscible mixed systems as research objects,including alkane/methanol/water,ionic liquid?IL?/IL/water and IL/ethanol/inorganic salt.Then the phase behaviors of ternary partial miscible mixed systems,such as n-hexane/methanol/H₂O,cyclohexane/methanol/water,n-heptane/methanol/water,n-octane/methanol/H₂O,HmimPF₆/H₂O/HmimBF₄,Hmim PF₆/H₂O/Emim BF₄,HmimPF₆/BmimBF₄/H₂O and BmimPF₆/C₂H₅OH/CuCl₂,were studied at 25?.It was found that there were nanodomains in the single-phase solution,where the size changes significantly as the solution components approached the phase separation point,by the dynamic light scattering?DLS?,conductivity and fluorescence experiment results.IL is a new type of green solvent with designable structure.There are complex interactions in the mixed solution of ILs,which can be used as template in the preparation of porous materials.The discovery provides a new idea for the preparation of porous materials.In this paper,HmimPF₆/BmimBF₄/water mixed solution are used as solvent and template agent to synthesize porous titanium dioxide?TiO₂?at 25?and normal pressure,and the pore properties of the material can be controlled by changing the water content in the solution.The result shows that the synthesized porous Ti O₂ has a good degradation effect on methylene blue and can be reused.