Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide

Abstract

MgCuFe-layered double hydroxide exhibited high catalytic activity to activate peroxymonosulfate for degradation of organic pollutants. SO4˙− and ·OH are the main reactive radicals involved in the degradation of organic pollutants.

Activating peroxymonosulfate by halogenated and methylated quinones: performance and mechanism

“…Advanced oxidation processes (AOPs) for the remediation of contaminated soils, groundwater, and sediments have received considerable attention in recent years. [1][2][3] These processes are based mostly on activation of hydrogen peroxide (H 2 O 2 ), 4 titanium dioxide (TiO 2 ), 5 persulfate (PDS) 6,7 and peroxymonosulfate (PMS) [8][9][10] to generate oxidizing species such as sulfate radical (SO 4 c À ) (2.5-3.1 V) and hydroxyl radicals (cOH) (1.9-2.7 V), 11 which are highly reactive oxidants toward organic compounds. Among AOPs, PMS has emerged as a popular technique in environmental remediation.…”

Magnetic Fe3O4@CoFe-LDH nanocomposite heterogeneously activated peroxymonosulfate for degradation of azo-dye AO7

“…The unique layered structure of LDH combined with its tuneable controllability of metal ions and structural stability made these materials promising for water splitting, energy storage and environmental remediation. [19][20][21] Herein, a novel core@shell Fe 3 O 4 @CoFe-LDH was synthesized and applied for PMS activation in azo-dye AO7 degradation. The nanocomposite was prepared via a simple co-precipitation method and characterized by various analytical methods.…”

“…The unique layered structure of LDH combined with its tuneable controllability of metal ions and structural stability made these materials promising for water splitting, energy storage and environmental remediation. 19–21 For instance, Guo et al successfully synthesized CoCu-LDH composites with great performance in PMS activation for removal of lomefloxacin. 22 Zhao et al reported that CoMn-LDH/PMS system achieved 52.2% TOC removal rate of acid orange G. 23 Hence, cobalt-based LDH catalysts look efficient for the activation of PMS.…”

Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties

“…Analyzing these peaks, the REELS has generated complementary results to XPS in Figure b, where the peak at 946.63 eV can be correlated with the precursor concentration, the x = 0.00–0.10 value of bismuth. These peaks are commonly observed as satellite peaks for atoms in ferrite based alloys …”

“…These peaks are commonly observed as satellite peaks for atoms in ferrite based alloys. 40 To study the effect of polarized light, we investigate differential absorption of left and right circular polarized light using magnetic circular dichroism (MCD); see Figure 4b. Here we observe that the shapes of the MCD spectra for all the samples are similar (less than 10% variation in the peak locations), except for sample 2 (x = 0.02), which has a large deviation in its MCD properties.…”