Fe-Doped UiO-66 Combined with ZnIn₂S₄ for Adsorption and Degradation of RhB Under Visible Light

Abstract

Novel ZnIn2S4/FeUiO-66 (ZFeU) photocatalyst with different proportion of FeUiO-66 has been successfully prepared by a facile one-pot solvothermal reaction. The as-synthesized nanocomposites have been thoroughly characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform-infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), Brunauer–Emmett–Teller (BET) characterization, photoluminescence (PL) analysis and electrochemical impedance spectrum (EIS). The photocatalytic performance of ZFeU nanocomposites for the photodegradation of RhB under visible light irradiation was better than that of ZnIn2S4 and FeUiO-66 alone. The experiment results showed the 20% ZFeU nanocomposites had the best photocatalytic properties. At the same time, a probable mechanism was discussed and it was believed that introduction of FeUiO-66 on ZnIn2S4 would minimize the recombination of photogenerated electron-hole pairs, leading to the enhancement of the photocatalytic activity.

A Paper-Based Photoelectrochemical Sensing Platform Based on In Situ Grown ZnO/ZnIn2S4 Heterojunctions onto Paper Fibers for Sensitively Detecting AFP

“…In the spectra of pure ZnO, the peaks over the range of 600–400 cm −1 were attributed to the fundamental vibration of Zn–O [ 59 ]. In the FT-IR spectra of pure ZnIn 2 S 4 , the observed peaks were ascribed to the surface water molecules and hydroxyl groups [ 60 ]. Compared with the spectra curves in Figure 2 N, the FT-IR peaks of ZnO/ZnIn 2 S 4 heterojunctions were completely in accord with those of pure ZnO and ZnIn 2 S 4 , which further confirmed the successfully synthesized ZnO/ZnIn 2 S 4 heterojunctions.…”

Characteristics and application of iron-based materials in heterogeneous Fenton oxidation for wastewater treatment: a review

“…With the development of chemical synthesis techniques, MOFs can be used as matrices for various functional species (e.g., nanoparticles), offering the possibility of developing novel composite materials. [239][240][241] It has been shown that some MOFs undergo the photo-Fenton reaction under light due to the synergistic effect of catalytically active sites, and in particular, Fe based or Fe doped MOFs can be used as non-homogeneous photocatalysts. 241,242 There are currently two methods for the synthesis of functional material/MOF composites: first, the pre-synthesized functional material is used for stabilization by surfactants and later encapsulated during MOF growth, and second, the synthesized MOF is used as a matrix and the functional material is synthesized in its cavity.…”