Enhancement of photocatalytic potential and recoverability of Fe3O4 nanoparticles by decorating over monoclinic zirconia

Adsorptive Removal of Cd, Cu, Ni and Mn from Environmental Samples Using Fe3O4-Zro2@APS Nanocomposite: Kinetic and Equilibrium Isotherm Studies

“…Furthermore, the peaks observed at 30.1°, 58.3° and 62.8° exhibited the tetragonal phase of ZrO 2 , suggesting a mixture of both monoclinic and tetragonal phases [ 32 , 33 , 34 ]. These deconvolutions affirm the successful integration of the strongly crystalline ZrO 2 -Fe 3 O 4 nanocomposite which agrees with those reported in the literature [ 34 , 35 ].…”

“…The FTIR spectrum of the functionalized nanocomposite is displayed in Figure 2 . The characteristic band at 3492 cm −1 and 1642 cm −1 represent the stretching and the bending modes of the –OH group of adsorbed water present on the surface of the nanocomposite, respectively [ 23 , 35 ]. The bands in the range 400–880 cm −1 correspond to the vibrations of the Fe–O and Zr-O from Fe 3 O 4 and ZrO 2 , respectively [ 35 ].…”

“…The characteristic band at 3492 cm −1 and 1642 cm −1 represent the stretching and the bending modes of the –OH group of adsorbed water present on the surface of the nanocomposite, respectively [ 23 , 35 ]. The bands in the range 400–880 cm −1 correspond to the vibrations of the Fe–O and Zr-O from Fe 3 O 4 and ZrO 2 , respectively [ 35 ]. Moreover, the absorptions at 1036 cm −1 and 776 cm −1 were assigned to the Si-O-Si and Si-O vibrational band from the APS ligand, respectively [ 23 , 36 ].…”

Fast Pyrolysis of Cellulose and the Effect of a Catalyst on Product Distribution

“…The acidity and alkalinity of the metal oxide surface also affected the product distribution in the bio-oil [ 22 ]. Zirconium dioxide (ZrO 2 ) is an exciting material for various photochemical heterogeneous reactions due to its n-type semiconductor nature; it can also be utilized as a support material for nanoparticle synthesis [ 23 ]. Sun et al reported that ZrO 2 can effectively convert macromolecular oxygenated compounds into small molecular compounds and increase the bio-oil content in pyrolysis products, promote the generation of aldehydes, alcohols, ketones, and N-compounds, and inhibit the generation of carbohydrates, acids, esters, and phenols [ 1 ].…”

Synthesis of Fe3O4/ZrO2/CuO magnetic nanohybrids and their applications in reducing chromium(vi) and degrading methylene blue under sunlight

“…As can be observed, Fe 3 O 4 /ZrO 2 NPs display a strong fluorescence emission peak at 450 nm. Compared to Fe 3 O 4 / ZrO 2 , Fe 3 O 4 /ZrO 2 /CuO exhibits lower fluorescence intensity since the copper(II) oxide loaded on Fe 3 O 4 /ZrO 2 decreases the electron/hole pair recombination rate, hence increasing the photocatalytic activity 29.…”