Heavy metals in wastewater can cause acute and chronic toxicity which leads to learning disabilities, cancer, and even death. In present work, Zn based MOF (MOF-5) was prepared, and it is characterized by FT-IR, XRD, and SEM Analysis. MOF-5 incorporated polymeric membranes (PES, CA and PVDF) prepared by phase inversion method. The morphology, hydrophilicity, porosity, permeation performance, antifouling properties and the rejection of Cu (II) and Co (II) metal ions of the membranes were significantly improved with the addition MOF-5. Higher rejection efficiency for Co (II) in PES/MOF-5 and CA/MOF-5 was found to be 74.40 % and 77 % respectively.

Herein, we present a hierarchical structure consisting of an expanded interlayer, which comprises MoS2 dispersed onto and diffused into nitrogen-doped carbon nanotubes (MoS2-CNTPPys), as an electrode material for a symmetric supercapacitor device. Structural characterizations revealed the presence of expanded interlayer spacing as evidenced by the downshifting of the X-ray diffraction (XRD) peaks representing the (002) plane and an increased interlayer distance of ∼0.82 nm. Further transmission electron microscopy (TEM) measurements showed that the MoS2 nanosheets not only covered the surface of the CNTPPy but also penetrated the CNTPPy to form a core–shell structure. The MoS2-CNTPPy electrode delivers a high specific capacitance of 275 F g–1 at 1 A g–1 in aqueous 1 M H2SO4, which is 2.5 times higher than pristine CNTPPy. The MoS2-CNTPPy symmetrical supercapacitor (SSC) devices yield a high specific capacitance of 37.4 F g–1 with a pristine poly­(vinyl alcohol) (PVA)/H2SO4 electrolyte. Surprisingly, the addition of Na2MoO4 to PVA/H2SO4 as a redox electrolyte further increases the specific capacitance of MoS2-CNTPPy SSC to three times (95.14 F g–1) that of the PVA/H2SO4 electrolyte, with outstanding capacity retention (95.6% over 5000 cycles). Overall, the excellent performance of the hierarchical MoS2-CNTPPy electrode, coupled with the PVA/H2SO4/Na2MoO4 redox polymer gel electrolyte, is expected to be a potent combination for energy storage device applications.

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The SrNiO3 perovskite catalyst was synthesized by the citrate sol-gel method and supported on γ-Al2O3 and Nickel foam, which was used to produce syngas (CO and H2) via dry reforming of propane (DRP). Several techniques characterized the physicochemical properties of the fresh and spent perovskite catalyst. The X-ray diffractograms (XRD) characterization confirmed the formation of the perovskite compound. Before the catalytic activity test, SrNiO3 perovskite catalyst was reduced in the H2 atmosphere. Results indicated that the H2 reduction slightly increased the activity of the SrNiO3 perovskite catalyst. The catalytic activity was examined for the CO2/C3H8 ratio of 3 and reaction temperatures in the range of 550 °C–700 °C. The results from the catalytic study achieved 88% conversion of C3H8 and 66% conversion of CO2 with SrNiO3/NiF at 700 °C. Also, syngas with a maximum concentration of 21 vol.% of CO and 29 vol.% of H2 was produced from the DRP. The strong basicity of SrNiO3 perovskite enhanced the CO selectivity, resulting in minimal carbon formation. Post reaction catalyst characterization showed the presence of carbon deposition which could have originated from propane decomposition.