Enhanced formation of sulfate radicals by metal-doped BiFeO3 under visible light for improving photo-Fenton catalytic degradation of 2-chlorophenol

Heterogeneous photo-Fenton degradation of organics using highly efficient Cu-doped LaFeO3 under visible light

“…Recently, perovskite oxides with the general formula ABO3 (A = usually an alkaline, alkaline earth or rare earth element; B = transition metal) have been recognized as an efficient form of heterogeneous catalysts to participate in the photo-Fenton process for the degradation of organic pollutants [14][15][16][17]. LaFeO3 (LFO) is one of the widely selected perovskite oxides for study due to its non-toxicity, stability, and small band gap energy.…”

Effective degradation of azo dyes in the dark by Cu2+ active sites in CaSrNiCu oxides

“…Therefore, the partial substitution and/or replacement of cations in a mixture of mixed metal oxides offers a range of opportunities to optimise and enhance the catalytic performance. Many of these partially substituted compounds have shown high catalytic activity such as Cu for oxygen transport [22], or as Cu-doped perovskites in the Fenton-like reaction [23,24]. Very recently, Chen et al [25] reported that CaxSr1-xCuO3 perovskite was effective in breaking down the azo bonds of OII dyes reaching 80% degradation in 10 min (OII = 50 ppm) under dark conditions, though mineralisation was low at 30%.…”

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

“…An et al used this technique to analyze the calcined catalyst (graphene -BiFeO3) before and after the reaction and at the time of synthesis at 600 °C. Broadening and shifting of peaks in Raman Spectroscopy curve tells about the addition or doping of metal [150]. It is one of the popular vibrational spectroscope apart from FTIR which can be utilized to assess the motion of the molecule, identification of species and functional group [254].…”