Efficient CO2-removal using novel mixed-matrix membranes with modified TiO2 nanoparticles

摘要: Modified TiO2 nanoparticles were successfully embedded into Pebax-1657 as a polymer matrix. The resulting mixed-matrix membranes are highly efficient for CO2 removal especially at high pressures. Nanofiller grafting with 3-aminopropyl-diethoxymethylsilane (silane agent) and surface modification carboxymethyl chitosan led to Pebax-modified-TiO2 composite 50–60% increase in permeability 30–33% CO2/N2 selectivity compared the pristine Pebax. performance of nanocomposite is favorably above 2008 Robeson upper bound. Stability analyses prepared showed acceptable durability permeation experiments. Characterization techniques such FT-IR, DSC, TGA, SEM compatibility polymer, better thermal stability membranes, satisfactory dispersion nanofillers polymer.