The computational density functional theory (DFT) investigating the CO gas adsorption on magnesium porphyrin nanorings (Mg4@PNR4).

The decorated butadiyne-linked four porphyrin nanorings with four magnesium cations (Mg4@PNR4) represented a novel class of nanoscale molecules. This Mg4@PNR4 system could be considered as a high surface area with favorable chemical and physical properties which has inherent ability to form hydrogen and covalent bonds. The Mg4@PNR4 system could contribute to air purification and greenhouse gas decrease by efficiently capturing toxic gases such as carbon dioxide and nitrogen oxides.

Enhancement of the photocatalytic activity of rGO/NiO/Ag nanocomposite for degradation of methylene blue dye.

The current study focuses on boosting the photocatalytic ability of reduced graphene oxide (rGO) by decorating the rGO nano-sheets with nickel oxide (NiO) and silver (Ag) nanomaterials. The developed ternary nanomaterials were investigated using FTIR, XRD, FESEM, TEM, Raman, and UV-vis to evaluate the photo-degradation process. The rGO/NiO/Ag ternary system showed promising photocatalytic dye degradation under simulated sunlight irradiance.