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Environmental remediation of heavy metals from wastewater is becoming popular area in the field of membrane technology. Heavy metals are toxic in nature and have ability to bioaccumulate in water bodies. In current study, zirconium‐based metal organic frameworks (MOFs), that is, UiO‐66 and UiO‐66‐SO3H with a mean diameter of 200 nm were synthesized and intercalated into polyethersulfone (PES) substrate to fabricate thin‐film nanocomposite (TFN) membranes via an interfacial polymerization (IP) method. TFN membranes exhibit higher selectivity and permeability as compared to thin‐film composite (TFC) membranes for heavy metals, such as cadmium (Cd) and mercury (Hg). Zirconium‐based MOFs are highly stable in water and due to smaller pore size enhanced hydrophilicity of TFN membranes. In addition, TFN membrane with functionalized MOF (UiO‐66‐SO3H) performed best as compared to TFC and TFN with UiO‐66 MOF. The effect of loading of different weight percentages (wt%) of both MOFs for TFN membranes was also investigated. The TFN membranes with loading (0.2 wt%) of UiO‐66‐SO3H displayed highest permeability of 9.57 LMH/bar and notable rejections of 90% and 87.7% toward Cd and Hg, respectively. To our best understanding, it is the first study of intercalating functionalized UiO‐66‐SO3H in TFC membranes by IP and their application on heavy metals especially Cd and Hg. [ABSTRACT FROM AUTHOR]

The study was conducted to highlight a detailed account of morphology of pollen chosen species of Lamiaceae through scanning electron microscopy, and the anatomical characteristics of leaf epidermis of seven species using simple light microscopy. In results, Anisomeles indica and Otostegia aucheri belong to subfamily Lamioideae because it has tricolpate pollen while the rest eight species belong to subfamily Nepetoideae (hexacolpate pollen). The exine sculpturing of pollen of studied species was found to be reticulate. In the family Lamiaceae, four kinds of stomata were found anomocytic, anisocytic, diacytic, and actinocytic, respectively. The cell wall patterns of epidermal cells were irregular or polygonal with straight or undulate walls. It was noted that the variety of the epidermal trichomes seems of taxonomically important for the identification of species of Lamiaceae. Both nonglandular and glandular trichomes were analyzed. The nonglandular trichomes were characterized with long, thin, and pointed apical unicellular cells. The nonglandular trichomes were A-shaped in Thymus linearis. In Perovskia abrotanoides, stellate glandular trichomes were observed whereas in A. indica and Mentha royleana both glandular and nonglandular trichomes were found. In A. indica, the nonglandular trichomes were sessile and peltate in M. royleana. For the first time in this study, pollen and foliar micromorphological features of selected species of this area are carried out. These taxonomic characters were found to be important in discrimination of species from each other. In future, the detailed study with comprehensive morphology coupled with other important characters is required for delimitation of taxa at various levels. [ABSTRACT FROM AUTHOR]

In the title compound, [PdCl2(C6H5ClN)(C18H15P)]·CH2Cl2, the four-coordinated PdII complex exhibits a nearly square-planar geometry. The Pd—N, Pd—P and two Pd—Cl bond lengths are 2.170 (3), 2.2322 (9) and 2.2910 (9)/2.3104 (9) Å, respectively, and the angles at PdII lie in the range 86.85 (3)–93.58 (4)°. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, [PdCl2(C12H23N)(C18H15P)], the Pd atom is four-coordinate in a nearly square-planar environment, with Pd—Cl = 2.2974 (6) and 2.3055 (7) Å, Pd—N = 2.1573 (17) Å and Pd—P = 2.2504 (7) Å. Both cyclo­hexyl rings adopt chair conformations. [ABSTRACT FROM AUTHOR]