The -diethanolaminomethylcalix[4]arene-incorporated polyacrylonitrile-based facilitated-transport-nanofiber mat for O/N separation.

Separation of gases from air mixture is one of the most challenging and laborious separations due to the remarkably uniform molecular size of gas molecules. Therefore, the present study aimed to synthesize polyacrylonitrile-based nanofibers mat(NM) impregnated with -diethanolaminomethylcalix[4]arene (PAN/-DEAC4 NM) for the separation of two crucial gases O and N. The affinity of the prepared PAN/-DEAC4 NM for O was examined by optimizing the loading concentration of -DEAC4 in the range from 5% to 20% (w/v).

Fabrication of 1-octane sulphonic acid modified nanoporous graphene with tuned hydrophilicity for decontamination of industrial wastewater from organic and inorganic contaminants.

This research work is based on the fabrication of a graphene oxide-based composite (GOBC) to remove the maximum number of contaminants from different industrial effluents. The GO was first intercalated with 1-octanesulphonic acid sodium salt and subjected to microwave irradiation to produce GOBC. Fixed-bed column tests and Jar-tests were performed for removal of the most harmful endocrine disrupting compounds (EDCs) such as bisphenol A, bisphenol S, endosulphan, beta-estradiol, dyes (methylene blue and violate) and toxic metal ions such as Pb, Li, Ni, Co, Cr, Zn, Cd, Hg, Cu, and As adsorption.

Sonochemical synthesis of CoO nanoparticles deposited on GO sheets and their potential application as a nanofiller in MMMs for O/N separation.

In this study we report an environmentally friendly, facile and straightforward sonochemical synthetic strategy for a CoO/GO nanocomposite using ,'-bis(salicylidene)ethylenediaminocobalt(ii) as a precursor and graphene oxide sheets as an immobilization support for CoO nanoparticles. The synthesis was facilitated by physical and chemical effects of cavitation bubbles. The synthesized nanocomposite was thoroughly characterized for its composition and morphology using Fourier transform infrared spectroscopy (FTIR), Energy dispersive X-ray spectroscopy (EDS), Scanning electron microscopy (SEM), UV-visible, Raman and X-ray diffraction spectroscopy (XRD), The results show CoO nanoparticles of 10 nm (SD 3 nm) were prepared on well exfoliated sheets of GO.