Publications by authors named "Qinhui Ren"
The Zn/Cr-MOFs/TiO composites were synthesized using the solvothermal method. XRD, FTIR, and SEM techniques were utilized to characterize the Zn/Cr-MOFs/TiO composites employed for simulating levofloxacin hydrochloride in wastewater. The impact of the mass of the Zn/Cr-MOFs/TiO composite, concentration of levofloxacin hydrochloride, solution pH, and temperature on the adsorption performance was investigated.
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- A composite material made from graphene oxide and chromium metal-organic frameworks was synthesized using a solvothermal method, employing specific organic ligands and metal sources for its creation.
- Characterization techniques like Fourier transform infrared and scanning electron microscopy were used, revealing an impressive moxifloxacin removal rate of 90.4% at equilibrium while demonstrating how temperature affects adsorption capacity.
- The adsorption process was examined through various kinetic and isotherm models, with findings indicating that chemisorption is significant in moxifloxacin removal and suggesting the composite's potential for applications in drug removal.
Article Synopsis
- The study focused on synthesizing Co/Cd metal-organic frameworks (MOFs) using a solvothermal method followed by calcination and characterization techniques to evaluate their ability to remove moxifloxacin from solutions.
- Results showed a maximum adsorption capacity of 350.4 mg/g for moxifloxacin after 5 hours, following a pseudo-second-order kinetic model.
- The adsorption interactions were best described by the Freundlich multilayer adsorption isotherm, indicating that Co/Cd-MOFs could be effective adsorbents for wastewater treatment.
The Zn/Zr-MOFs were synthesized via microwave-assisted ball milling and subsequently characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The thermal stability of the Zn/Zr-MOFs was evaluated through thermogravimetry (TGA). The results demonstrated the exceptional adsorption properties of the Zn/Zr-MOFs towards Lomefloxacin hydrochloride and Levofloxacin hydrochloride.
View Article and Find Full Text PDFThis work studies the use of Fe/Ni-MOFs for the removal of ciprofloxacin (CIP) in wastewater. Fe/Ni-MOFs are prepared by the solvothermal method and characterized by X-ray diffraction (XRD), a scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and a thermal gravimetric analyzer (TG). Under the conditions of the concentration of 50 ppm, a mass of 30 mg, and a temperature of 30 °C, the maximum adsorption capacity of ciprofloxacin removal within 5 h was 232.
View Article and Find Full Text PDFZirconium-iron metal-organic frameworks (Zr/Fe-MOFs) and Zr/Fe-MOF/graphene oxide (GO) composites were prepared solvothermal synthesis using ferrous sulfate heptahydrate, zirconium acetate, and 1,3,5-benzenetricarboxylic acid. The MOFs and composites were measured using scanning electron microscopy (SEM), infrared spectrometry (IR), and thermogravimetric analysis (TGA). In this study, we explored the ability of Zr/Fe-MOFs and Zr/Fe-MOF/GO composites to adsorb tetracycline hydrochloride from an aqueous solution.
View Article and Find Full Text PDFGraphene oxide/metal-organic frameworks (GO/MOFs) have been prepared via solvothermal synthesis with ferrous sulfate heptahydrate, zirconium acetate and terephthalic acid for the purpose of removing organic pollutants from wastewater. The composites were analyzed using scanning electron microscopy, infrared spectrometry, and XRD. Tetracycline hydrochloride and orange II were implemented as model pollutants to evaluate the efficacy of the GO/MOFs in water purification, in which 50 mg of Zr/Fe-MOFs/GO was mixed with 100 mL of 10 mg/L, 20 mg/L, 30 mg/L, or 50 mg/L tetracycline hydrochloride solution and 25 mg/L, 35 mg/L, 45 mg/L, or 60 mg/L orange II solution, respectively.
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