Persulfate enhanced photocatalytic degradation of bisphenol A over wasted batteries-derived ZnFe2O4 under visible light

Degradation of sulfadiazine in aqueous media by peroxymonosulfate activated with biochar-supported ZnFe2O4 in combination with visible light in an internal loop-lift reactor

“…Moreover, a positive slope indicates the conduction band (CB) potential ( E CB ) for an n-type semiconductor, whereas a negative slope indicates the valence band (VB) potential ( E VB ) for a p-type semiconductor. 56 In this way, the CB energy of ZnFe 2 O 4 was obtained as 2.35 eV and the VB energy of BC was obtained as −0.73 eV with respect to Ag/AgCl. According to the UV/Vis DRS analysis results, the E VB of ZnFe 2 O 4 and the E CB of BC were calculated according to the following formula 56,64,65 as 0.40 eV and 1.73 eV, respectively. E VB = E CB + E g …”

“…4a and revealed that the photocatalysts exhibited wide visible-light absorption capacity. Based on the Kubelka–Munk equation and the Tauc relationship (eqn (3) and (4)), 37,55,56 the band-gap energies ( E g ) of BC, ZnFe 2 O 4 , and ZnFe/BC were calculated as 2.46, 1.95, and 2.16 eV, respectively, from plots of ( αhv ) 2 versus energy ( hv ) (Fig. 4b).…”

Synergetic effect of photocatalysis and peroxymonosulfate activated by MFe2O4 (M = Co, Mn, or Zn) for enhanced photocatalytic activity under visible light irradiation

“…The pH value had an obvious effect on PMS activation, which was confirmed by a previous study. 33 Therefore, the effect of the pH value on the degradation rate was studied. As exhibited in Fig.…”

UV Stimulated Manganese Dioxide for the Persulfate Catalytic Degradation of Bisphenol A

“…•− [17,18]. PS can be activated by transition metal catalysts (such as iron oxides and manganese oxides), nonmetal catalysts, ultraviolet (UV) and visible light, ultrasound, alkaline, heat, and strong oxidants to produce SO 4…”