Magnetic MOF composite material for decontamination of direct red 81 from polluted water

Abstract

Herewith, magnetic Zn MOF composite material was utilized as an efficient adsorbent for direct red 81 “DR81” dye from wastewater. The synthesized magnetic MOF was characterized using X-ray diffraction (XRD), field emission transmission electron microscopy (FETEM), Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), thermal gravimetrical analysis (TGA), and Brunauer-Emmett-Teller (BET) surface area analysis. The adsorption profile of DR81 anionic dye onto the prepared magnetic MOF was investigated with various processing parameters such as contact time, dosage, and initial dye concentrations. The optimum dosage from the fabricated magnetic Zn MOF for decontamination of DR81 was 1.0 g l−1 at pH = 7 after 30 min. The maximum Langmuir monolayer adsorption capacity of the DR81 decontamination via the synthesized magnetic MOF was recorded 67.35 mg g−1. These promising data confirmed the availability of the synthesized magnetic MOF composite as an excellent adsorbent material for the adsorption of DR81 from aqueous media.

Ultrasounds assisted one-pot oxidative desulfurization of model fuel using green synthesized aluminum terephthalate [MIL-53(Al)]

“…The sulfur-containing compounds are oxidized by selected oxidants to form corresponding sulfoxides or sulfones, which have higher polarity and are easy to be extracted from oil 12 . Several key features of Metal–organic Frameworks enable their use as efficient heterogeneous catalysts, in particular the exceptionally large surface area and porosity, the good thermal stability and the adjustable acidity/basicity 13 – 15 . Furthermore, some additional properties of these materials play a fundamental role in promoting ODS 16 , 17 .…”