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A special composite of the cerium-based metal–organic framework (Ce-UiO-66) modified with graphitic carbon nitride nanosheets (g-C3N4) has been synthesized. In order to make a comparison, a series of composites comprising g-C3N4 and Ce-MOF was synthesized as well. Their structural features were investigated using Fourier transform infrared spectroscopy (FT-IR), Powder X-ray Diffraction (PXRD), sorption of nitrogen (BET and BJH), Thermo-gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray (EDX), Transmission Electron Microscopy (TEM), X-Ray Fluorescence Spectroscopy (XRF) and Diffuse Reflectance UV–Vis Spectroscopy (UV-Vis DRS) and Electron Spin Resonance (ESR) techniques. According to the obtained resu
Ce-UiO-66 MOF, namely cerium-organic framework was prepared through a fast and efficient method under ultrasonic radiation. After preparation, it was identified using some different microscopic and spectroscopic techniques such as PXRD, FT-IR, TG/DTA, BET, BJH, and FE-SEM. The catalytic activity of Ce-UiO-66 MOF was checked in aerobic oxidation of methyl arenas, alcohols and styrene derivatives in a sustainable circumstance with no additives. Moreover, its catalytic activity was surveyed influenced by a number of variables in the ultrasonic synthesis method. Some parameters such as solvent, base, temperature, amount of the catalyst and time were also tested to optimize the aerobic oxidation reaction. After the 10th run, the recycled Ce-MOF
Magnetic and photoactive carbon based materials with the use of polyoxometalate-based ionic crystal [Fe(phen)3]2[SiW12O40]?3DMF (IC–Fe) on cobalt(II) monoxide decorated magnetic multi-walled carbon nanotubes(MWCNTs/Fe3O4/CoO) were synthesized and characterized. The prepared nanocomposites were characterized by FT-IR, XRD, Raman, TEM, VSM, XPS and UV–Vis. We have shown that synthesized MWCNTs/Fe3O4/CoO/IC-Fe nanocomposite can be used as a stable photocatalyst for the photodegradation of 2,4,6-Trichlorophenol (2,4,6-TCP) pollutant, under visible-light irradiation. The examination of the photocatalytic activity of the synthesized nanocomposite was compared with the one of the pristine IC-Fe nanoparticles. The main effect of the introductio
Abstract In this paper, MgAl2 O4 nanoparticles were synthesized by the Sol-gel auto combustion method and were doped with different concentrations of Ni2+(x= 0, 0.1, 0.05, and 0.03). By this method, a novel photocatalyst which had better decolorization percentages of Congo redcompared to MgAl2 O4 was produced. The MgAl2 O4 samples were calcinated at 1000 C. The samples obtained were characterized by X-ray diffraction (XRD), SEM, FT-IR, EDX, and ICP-AES. The photocatalytic activity of MgAl2 O4 samples were evaluated by UV-Vis spectroscopy and diffuse reflectance spectra (DRS) to confirm the performance rate of the photocatalyst. Also, the photocatalytic properties were investigated in the presence of UV light, certain amounts of photocatalys
Herein an effective and facile approach for introducing photoactive and stable hybrid of graphene oxide (GO) and perylenediimide (PDI) was presented. For this purpose, we have synthesized amidated GO and then by reaction between amidated GO and asymmetric PDI, hybrid (GNP) was produced. The studies on the stability and on the dispersibility of this hybrid showed that the GNP hybrid is stable and dispersible in aqueous solution. This hybrid considered as a sensitizer for photocatalytic process due to its stability in aqueous solution and visible light absorption. Then a series of GNP/TiO2 nanocomposites (TGNP) with different percentage of GNP were prepared by solvothermal method, and the structure, morphology, thermal stability, electrochemi
Application of amino acids-immobilized porous materials for drug delivery studies has been attracted a lot of attention in the recent years. In this study, amino acids-grafted graphene foams were prepared by anchoring of Alanine (Ala), Cysteine (Cys) and Glycine (Gly) amino acids on the surface of graphene oxide (GO) nanostructures and used as the novel biocompatible carriers to control releasing of the cisplatin as the cytotoxic anticancer drug. The characterization of prepared compounds was done by the FT-IR, Raman, TGA, N2 adsorption–desorption isotherms, SEM, and TEM techniques. Adsorption and in vitro release behavior of amino acids-functionalized foams were studied using ICP standard method. The results show that the drug loading am
In this paper, MgAl2O4 nanoparticles were synthesized by the Sol-gel auto combustion method and were doped with different concentrations of Ni2+ (x= 0, 0.1, 0.05, and 0.03). By this method, a novel photocatalyst which had better decolorization percentages of Congo redcompared to MgAl2O4 was produced. The MgAl2O4 samples were calcinated at 1000 0C. The samples obtained were characterized by X-ray diffraction (XRD), SEM, FT-IR, EDX, and ICP-AES. The photocatalytic activity of MgAl2O4 samples were evaluated by UV-Vis spectroscopy and diffuse reflectance spectra (DRS) to confirm the performance rate of the photocatalyst. Also, the photocatalytic properties were investigated in the presence of UV light, certain amounts of photocatalysts, and Con
CdTiO3 nano-structures were synthesized by hydrothermal method for 24?h@180??C. It then was annealed at 450–1050??C for 3?h and its effect was evaluated using XRD, FT-IR, TG-DSC, BET, FE-SEM, DRS, Raman, and EDS. Ilmenite phase was formed for. 180–850??C. Transition to Perovskite occurred at 1050??C. Direct band-gaps were determined by Tauc-plot which shows decrease with increased temperature. Photocatalyst performance evaluation of samples was done for degradation of Crystal violet dye under LED and sunlight. Degradation efficiency of CdTiO3-1050??C was the best at both of LED/sunlight. Photoluminescence study shows a 400?nm excitation causes intense emission peaks at 478?nm (blue) and 530?nm (green).
In the current research, a double Z-scheme photocatalyst C3N4-TE@TiO2/UiO-66 (CNTU) is fabricated via a two-steps facile solvothermal method from Z-scheme C3N4-TE@TiO2 (CNT). This double Z-scheme photocatalyst reveals greater performance for the removal of tetracycline (TC) than pristine C3N4-TE, TiO2, UiO-66 (U66), and their binary compounds. The optimized composite 35C3N4-TE@TiO2/35UiO-66 (35CNTU), exhibitions photocatalytic performance for antibiotic removal (TC) more than 5,4 and 2 times higher than that pure TiO2, UiO-66, and C3N4-TE, respectively. The physical and chemical features of synthesized samples were described via FTIR, XRD, SEM-EDX, TEM, BET, UV–Vis DRS, and PL. The key parameters on photocatalytic performances of 35CNTU s
The high-performance photocatalysts have received considerable attention in the field of environmental remediation. Herein, the synthesis of multi-phase BiOx nanocrystals decorated by phosphorus dopant is reported through a facile one-pot solvothermal method. The resulting P0.15BiOx photocatalyst exhibited an optimal Cr (VI) reduction and RhB oxidation rates of 84% and 96% under visible light irradiation, being nearly 2 times higher than that of pristine BiOx sample. The improved photocatalytic performance could be ascribed to the synergetic effects of well-matched band positions via formation of new electron evolution pathway, efficient charge carrier mobility and introducing electronic defects by insertion of P5+ ions into the structure.