A Fenton-like method using ZnO doped MIL-88A for degradation of methylene blue dyes

Abstract

MIL-88A with different sizes were prepared by changing the content of ZnO. The prepared nanocomposites were used as catalysts in Fenton-like reaction of removing MB. The effects of the main reaction parameters on the reaction activity were studied.

New Hybrid Fe‐based MOFs/Polymer Composites for the Photodegradation of Organic Dyes

“…Furthermore, the crystallographic structure of MIL‐88 A(Fe) was examined by XRD. As seen in Figure 5 (B(a)), the XRD pattern of this MOF shows Bragg peaks at 2Ɵ values of 10.5° and 11.9°, in agreement with the calculated pattern (Figure S3) [44] and reported patterns from the literature [12,45] …”

“…As seen in Figure 5 (B(a)), the XRD pattern of this MOF shows Bragg peaks at 2Ɵ values of 10.5°a nd 11.9°, in agreement with the calculated pattern (Figure S3) [44] and reported patterns from the literature. [12,45] Due to the low mass percentages of these MOFs in the polymer (2 % and 1 % w/w, respectively), their characteristics Bragg peaks were hardly identified in the XRD patterns of their corresponding composites because of their lower intensities (Figure 5 (A, B (2)). However, the most intense Bragg peaks of the MIL-100(Fe) (at 2Ɵ 10.38°, 11.03°) and of the MIL-88 A(Fe) (at 2Ɵ 11.9°) were visible in the XRD patterns of MIL-100(Fe)/ polymer and MIL-88 A(Fe)/polymer composites, respectively, suggesting the preservation of the MOF crystallinity during the photopolymerization process.…”

Controllable One-Dimensional Growth of Metal–Organic Frameworks Based on Uncarved Halloysite Nanotubes as High-Efficiency Solar-Fenton Catalysts

“…As shown in Figure d, the high-resolution XPS spectrum of Fe 2p from H1M27 could be divided into Fe 2p 3/2 (711.25 eV) and Fe 2p 1/2 (725.11 eV) with a satellite signal at 715.40 eV for H1M27. The peak distance between Fe 2p 3/2 and the Fe 2p 1/2 is approximately 13.86 eV, and the peaks with a satellite signal are a feature of Fe­(III) in MIL-88A. − Furthermore, the Fe­(III) typical peaks of H1M27 (711.29 eV) shift to the lower binding energy in comparison to the Fe­(III) typical peaks of MIL-88A (718.00 eV), which can be ascribed to an intimate interfacial contact between MIL-88A and HNTs in the H1M27 composite …”

A highly efficient metal oxide incorporated metal organic framework [Nd2O3-MIL(Fe)-88A] for the electrochemical detection of dichlorvos

“…Electrochemical Impedance Spectroscopy (EIS) was used to assess the electrode–electrolyte interfaces and charge transfer resistance of unmodified and modified electrodes. 47,48 Fig. 4a shows the EIS spectra of the bare GCE, MIL(Fe)-88A/GCE, Nd 2 O 3 /GCE and Nd 2 O 3 @MIL(Fe)-88A/GCE in KCl (0.1 M) with [Fe(CN) 6 ] 3−/4− (0.01 M) mixture, with the frequency range applied from 0.1 Hz to 100 kHz and fixed AC applied potential to be 10 mV.…”

“…Electrochemical Impedance Spectroscopy (EIS) was used to assess the electrode-electrolyte interfaces and charge transfer resistance of unmodied and modied electrodes. 47,48 When compared to the above mentioned other modied electrodes, the bare GCE displays a huge semicircle with a very high resistance value of 131.7 U because of its poor electron transport behaviour. The charge transfer resistance value of the Nd 2 O 3 @MIL(Fe)-88A composite was 95.7 U, which was signicantly lower than that of the other modied electrodes and bare GCE, demonstrating that the material had superior electron transfer behaviour.…”