One-pot solvothermal synthesis and characterization of UiO-66/HKUST-1 composites

Abstract

Metal-organic frameworks (MOFs) are promising crystalline materials for various application due to their controllable porous structure and large specific surface area. Their properties can be further improved by several means, such as making a binary MOF comprising of two different MOFs. In this research, UiO-66/HKUST-1 composites have been synthesized by solvothermal method, in which the UiO-66 was prepared at 120 °C for 24 h in N, N-dimethylformamide (DMF) prior to preparation of HKUST-1 at 100 °C for 10 h in solvent mixture of DMF, ethanol and water. Amounts of Zr2+ for the synthesis of UiO-66 added during the synthesis process were varied at 5, 10 and 20% toward the amount of Cu2+ for synthesis of HKUST-1. Diffractogram patterns of the obtained composites showed dominant characteristic peaks, similar to that reported for HKUST-1. Furthermore, FTIR spectra of all solids showed absorption bands at the same wavenumbers as reported for HKUST-1. Transmission Electron Microscopy (TEM) images showed the spread of Zr metal evenly on the pore of composites.

Adsorption and decolorization study of reactive black 5 by immobilized metal–organic framework of UiO-66 andGloeophyllum trabeumfungus

“…One type of MOF that has a biocompatible property with fungus is Universitetet i Oslo-66 (UiO-66), which has advantages such as high thermal stability (up to 540 °C), large surface area, high porosity, and resilience in aqueous media. 21 Subsequently, this study continues a previous study using a different dye (RB5) on the same material. A previous study found that the beads could remove 88.29% of the methylene blue (MB) dye after 72 h. This study investigated RB5 dye degradation, including the kinetic, isotherm, and thermodynamic adsorption aspects and the influence of dye concentration, pH, and temperature parameters.…”

“…The synthesis of UiO-66 was carried out using the method from Ediati et al 21 with some modifications. Initially, two precursor solutions were made by adding 1.75 g of ZrCl 4 and 12.5 g of H 2 BDC each to two different Pyrex bottles containing 75 mL of DMF solvent, stirred with a magnetic stirrer for 15 min.…”