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A novel Zn (II) organic framework comprising 2-phenyl benzimidazole (ZPBIF-1) was synthesized by using a solvothermal method. The characterization of the synthesized MOF was performed utilizing XRD, SEM, FT-IR, 1 H-NMR, 13 C-NMR, MS, XPS, TG/DTA, and N 2 sorption analysis. ZPBIF-1 was successfully utilized to remove Acid red 88, Basic Violet 14, Basic Blue 54, and Congo red dyes in aqueous solutions. In this study, some parameters, including adsorbent dosage, initial dye concentration, contact time, temperature, and pH, were examined. To evaluate the experimental data, Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich isotherm models were used. In this case, Langmuir is the most suitable model. Several kinetic models, including First-order, pseudo-first-order, second-order, and Pseudo-second-order kinetic models, Elovich's, and Weber's intraparticle diffusion models, were utilized to comprehend the detailed adsorption process. According to the pseudo-second-order kinetic model, dye sorption kinetics is best described. In addition, thermodynamic parameters like enthalpy (ΔH°), Gibbs free energy (ΔG°), and entropy (ΔS°) were also achieved and analyzed. The experimental studies thus suggest that Zn (II) metal-organic framework based on 2-phenyl benzimidazole could be a promising candidate for eliminating dyes from aqueous solution. Hence, the experimental studies suggest that a Zn (II) metal-organic framework based on 2-phenylbenzimidazole could be a promising candidate for eliminating dyes from aqueous solution. The maximum adsorption capacity of ZPBIF-1 was 1666.66, 1250, 1000, and 1250 mg/g for Acid red 88, Basic violet 14, Basic blue 54, and Congo red dyes, respectively. Furthermore, this method was used to remove contaminant dyes from textile wastewater, and an acceptable result was obtained., (© 2022. The Author(s).)

• The synthesis of In (III) metal –organic framework with LH 2 ligand via the sonochemical method has been reported. • Three metal–organic compounds of Zr (IV), In (III) and Zn (II) were introduced into the perovskite layer to control the crystallization and film formation. • The hydroxyl and carboxyl groups in pyda and pydcH 2 ligands intract with ions to influence growth mechanism and quality of perovskite films. • The power conversion efficiency of fabricated PSCs increased more than 90% improvement after adding 2 wt% of zinc metal–organic framework in HTM-free conditions. The study aimed to investigate the role of the metal–organic frameworks in the perovskite solution, and their effects on perovskite crystal, absorption, film formation, and device performance. Three supramolecular compounds of Zirconium(IV), Indium(III) and Zinc(II) with proton transfer compound, obtained from 2,6-pyridinedicarboxylic acid and 2,6-pyridinediamine, were synthesized, and characterized and used as additives in perovskite solar cells. The additives with different amounts were added to the CH 3 NH 3 PbI 3 solutions to control the morphology of the perovskite layer during the film formation process. More importantly, the metal–organic frameworks serving as additives can help to form a better perovskite layer with fewer voids between CH 3 NH 3 PbI 3 domains during phase transformation. The findings showed that using a 2 wt% of zinc metal–organic framework in the perovskite layer achieved yields results in the performance of perovskite solar cells. As a result, the current density (Jsc) of the new device increased from 7.02 to 9.36 mA/cm2, and the Fill-Factor (FF) of the device improved from 0.42 to 0.62 for 2 wt% of zinc metal–organic framework. Also, the PCE (Efficiency) of perovskite solar cells achieved more than 90% of improvement after adding 2 wt% of zinc metal–organic framework as an additive in HTM-free conditions. FE-SEM and XRD studied the morphology of this new perovskite layer. [ABSTRACT FROM AUTHOR]

In this study, Cu/Zn/Al2O3-AC (AC = activated carbon) catalyst was synthesized and evaluated for dimethoxymethane (DMM) reformation to hydrogen. The Cu/Zn/Al2O3-AC catalyst was prepared using high surface area metal organic frameworks (MOFs) consisting of Cu3(BTC)2 (MOF-199) and Zn4O(BDC)3 (MOF-5) for Cu(II) and Zn(II) sources respectively, as precursors while γ-Al2O3 was applied as support. The synthesized catalyst was investigated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Brunauer-Emmett-Teller analysis (BET), Temperature programmed desorption (NH3-TPD) and Energy-dispersive X-ray spectroscopy (EDX) techniques. Complete DMM conversion was observed over Cu/Zn/Al2O3-AC catalyst (Cu:Zn:Al mole ratio of 6:3:2) under atmospheric pressure, T = 533 K, GHSV = 20 NL h−1 gcat−1, N2/H2O/DMM = 24/5/1 volume percent (vol%) with hydrogen productivity of 12.8 L H2 h−1 gcat−1 and 64% hydrogen concentration. Application of MOFs as precursors and modified activated carbon as an acidic component provided the catalyst with the porous structure and high specific surface area for the hydrolysis of DMM, subsequently, high selectivity and productivity of hydrogen was obtained. [ABSTRACT FROM AUTHOR]