Synthesis, characterization of Fe3O4@SiO2@ZnO composite with a core-shell structure and evaluation of its photocatalytic activity

Selective Recognition of Gallic Acid Using Hollow Magnetic Molecularly Imprinted Polymers with Double Imprinting Surfaces

“…From the XPS full survey scan ( Figure 2 b), Fe, O, N, C, and Si elements were detected in both HMMIP and MMIP, and similar positions of the binding energy of the same elements were reported in previous reports [ 27 , 28 , 29 , 30 , 31 ]. Compared with MMIP, the position of the binding energy peak of each element in HMMIP did not change, indicating that the etching of the mSiO 2 intermediate layer did not affect the main structure or the properties of other layers of MIP.…”

Synergic effect of Type II ZnO/BiVO4 magnetic heterostructures for visible light‐driven degradation of bisphenol A and methyl violet

“…[21] Moreover, the successful encapsulation of silica ferrite with ZnO shell was proved by appearance of a broad band at 550-570 cm À1 in Figure S3c. [22] Decoration of FSZ with BV dopant was justified by the presence of a peak at 719 cm À1 in Figure S3d, which is coinciding with the peak at 716 cm À1 obtained in the FT-IR spectrum of pure BV (Figure S3e).…”

Magnetic dummy template molecularly imprinted particles functionalized with dendritic nanoclusters for selective enrichment and determination of 4-methylnitrosamino-1-(3-pyridyl)-1-butanone (NNK) in tobacco products

“…The peaks at 2 θ values of 57.1°, 53.6°, 43.1°, 35.5° and 30.2° were attributed to the Fe 3 O 4 crystals with diffraction crystallographic surfaces of (511), (422), (400), (310) and (220), respectively. 20,21 After successful grafting of the dendritic nanoclusters, Fe 3 O 4 @SiO 2 @PAMAM exhibited broader bands located at 2 θ angles from 17° to 24°, which was attributed to the amorphous silica. XRD signals did not change significantly with Fe 3 O 4 @SiO 2 @PAMAM after performing the molecular imprinting synthesis, indicating that the process of dendrite modification and molecular imprinting synthesis did not affect the crystal structure of the magnetite core.…”