Stabilized Pony‐Sized‐CuFe₂O₄/Carbon Nitride Porous Composites with Boosting Fenton‐like Oxidation Activity

Abstract

In this study, pony‐sized Copper ferrite (CuFe2O4) nanoparticles were directly obtained and synchronously stabilized on nanoporous carbon nitride (MCN) named as CuFe2O4‐MCN, which emerges interestingly as a magnetically‐recycling heterogeneous Fenton‐like catalyst. The Fourier Transform Infrared, X‐ray diffraction, N2 desorption, X‐ray photoelectron spectroscopy and transmission electron microscopy were seriatim used to characterize these synthesized functional catalysts. These present results demonstrated that CuFe2O4‐MCN afford appreciable physical textural characteristics including well‐defined porous structure, advisable surface area and pore volume. The interaction between CuFe2O4 and MCN and its induced improved dispersion of CuFe2O4 NPs on MCN could be confirmed through XPS, FT‐IR, and TEM evidences. Impressively, the resulted CuFe2O4‐MCN composites exhibited a three times’ catalytic activity (kobs, 0.076 min−1) than that (kobs, 0.026 min−1) of mechanical mixture CuFe2O4‐MCN(M) in 4‐chlorophenol(CP) degradation. CuFe2O4‐MCN porous composites was further evaluated in catalysis according to various controlled parameters, including catalyst loading, H2O2 concentration, catalyst dosage and pH of 4‐CP degradation. At last, the catalytic stability of CuFe2O4‐MCN composites was investigated via magnetic recycling and reusage in next catalytic test. After three successive experimental runs, the porous structure and catalytic activity of CuFe2O4‐MCN catalysts remained constant.

Impregnated copper ferrite on mesoporous graphitic carbon nitride: An efficient and reusable catalyst for promoting ligand‐free click synthesis of diverse 1,2,3‐triazoles and tetrazoles

“…The peaks at 933.5 and 953.8 eV (with a satellite at 961.7 eV) in the spectrum of Cu2p can be assigned to Cu (2P 3/2 ) and Cu (2P 1/2 ), spin‐orbital components, respectively. The deconvoluted Cu (2P 3/2 ) XPS spectrum (Figure ) shows two peaks at 933.4 and 934.8 eV which could be attributed to Cu + and Cu 2+ , respectively . This may be due to the transformation of Cu 2+ into Cu + during the formation of the CuFe 2 O 4 /g‐C 3 N 4 composite.…”

“…The FT‐IR spectrum of magnetic CuFe 2 O 4 /g‐C 3 N 4 shows characterization peaks in the region of 400–600 cm −1 for Fe–O (550 cm −1 ) and Cu–O (427 cm −1 ), which indicate the presence of copper ferrites, and 1200–1650 cm −1 for the C–N group, which indicates the presence of copper ferrite and carbon nitride in the composite (Figure ). As shown in Figure , the intensity of band located at 1407 cm −1 (aromatic C–N stretching bond) decreased in CuFe 2 O 4 /g‐C 3 N 4 compared with that in mpg‐C 3 N 4 , which is regarded as a strong evidence for the interaction between copper ferrite and the C–N bond of mpg‐C 3 N 4 …”

Copper ferrite nanoparticles loaded on reduced graphene oxide nanozymes for the ultrasensitive colorimetric assay of chromium ions

“…3(C)) indicate the presence of Cu 2+ in CuFe 2 O 4 /rGO. 26 The Fe 2p peaks at 710.9 eV for Fe 2p 3/2 and 725.3 eV for Fe 2p 1/2 are characteristic of Fe 3+ , 27 as shown in Fig. 3(D).…”

Comparative Study of CuO, Fe3O4 and CuFe2O4/CuO over Montmorillonite Clay: Green Synthesis, Characterization and Catalytic Activity

“…[7] Furthermore, copper-containing compounds with the spinel-type structure and also magnetic nanoparticles have a potential catalytic application. [8,9] Developing a simple method to assemble nanoparticles with well dispersion and stability, and their immobilization on active support is desirable methodology from the viewpoint of green synthesis and manufacturing cost. [10] Over the past years, the green synthesis of nanoparticles using environmentally-safe materials has received considerable attention.…”