α-MnO2/Palygorskite composite as an effective catalyst for heterogeneous activation of peroxymonosulfate (PMS) for the degradation of Rhodamine B

Preparation of Mn2O3/MIL-100(Fe) composite and its mechanism for enhancing the photocatalytic removal of rhodamine B in water

“…To determine the suitable conditions for photocatalytic degradation of RhB using M100Mn, the affecting factors were investigated in a range of solution pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11), photocatalyst dosage (0-1000 mg L À1 ), RhB concentration (15-50 mg L À1 ), and Na 2 S 2 O 8 concentration (100-500 mg L À1 ). To evaluate the reusability of the material, the photocatalyst was separated from the dye solution by centrifugation aer each reaction cycle and then washed with water and ethanol to remove the RhB on the surface of the catalyst.…”

“…1,2 Wastewater containing dyes is difficult to treat due to the persistent and complex structure of the dyes, which resist conventional biological treatment such as aerobic and anaerobic processes. As alternatives to biological treatment, physicochemical processes for the treatment of RhB have been studied extensively, including adsorption, 3,4 photocatalysis, [5][6][7][8][9][10] electrochemical-Fenton, 11 biological treatment, and ltration. 12 Among them, advanced oxidation processes, particularly photocatalysis, are usually considered as some of the most suitable techniques for the treatment of RhB and other dyes due to their being highly efficient, low-cost, and environment-friendly techniques.…”

A bifunctional CoP/N-doped porous carbon composite derived from a single source precursor for bisphenol A removal

“…In order to identify the active species for BPA degradation, MeOH, tert-butyl alcohol (TBA), and 1,4-diazabicyclo [2.2.2]octane (DABCO) were employed as scavengers for both SO 4 c À and cOH, only cOH, and 1 O 2 , respectively. [18][19][20] Electron paramagnetic resonance (EPR) experiments were performed to record the signals of radicals using 5,5-dimethyl-1-pyrroline Noxide (DMPO) and 2,2,6,6-tetramethyl-4-piperidinol (TEMP) as spin trapping agents on a JEOL JES-FA200 spectrometer.…”

A Comprehensive Assessment of Catalytic Performances of Mn2O3 Nanoparticles for Peroxymonosulfate Activation during Bisphenol A Degradation

“…CoMnAl [20] and Mn 1.8 Fe 1.2 O 4 [32] are used for the activation of PMS in degradation of EDCs. Furthermore, dyes are also decontaminated by PMS using α-MnO 2 /palygorskite [33] and MnO 2 /MnFe 2 O 4 [34] as activators. Although the above materials are reported to have high catalytic abilities for PMS in the degradation of organic pollutants, harsh and precise conditions are required for the synthesis, limiting the possibilities for mass production and industrial applications.…”