High purity multi-walled carbon nanotubes: Preparation, characterization and performance as filler materials in co-polyimide hollow fiber membranes

E. P. Favvas, S. F. Nitodas, A. A. Stefopoulos, S. K. Papageorgiou, K. L. Stefanopoulos, A. C. Mitropoulos, Sep. Purif. Technol. (2014) 122, 262-269.