Peroxymonosulfate activation through 2D/2D Z-scheme CoAl-LDH/BiOBr photocatalyst under visible light for ciprofloxacin degradation

Photocatalytic degradation of ciprofloxacin in freshwater aquaculture wastewater by a CNBN membrane: mechanism, antibacterial activity, and cyclability

“…The further environmental fate of P11 was indicated in this study as the (i) degradation of the quinolone group (eqn(19)), (ii) replacement of the cyclopropane group (eqn (20)), and (iii) oxidation of the amino group (eqn (21)). Specifically, P11 may be attacked by ˙OH to form P12, which was then further oxidized to produce P13;78 in eqn (20) P11 was further degraded to lose the F group (P14) and C 3 H 4 (P15), which was similar to the previous report of Silva et al; 79 meanwhile in eqn(21), the nitrification and defluorination of P11 were inferred. Although both P15 and P17 were post-fluorination products, they may still retain antibiotic activities; thus, more attention should be paid to their environmental risks.…”

Structural engineering of BiOBr nanosheets for boosted photodegradation performance toward rhodamine B

“…4d , the two fitting peaks at 69.8 eV and 68.7 eV conform to Br 3d 3/2 and Br 3d 5/2 of Br − in B-1:3, respectively. 42 …”

Modulation of Z-scheme photocatalysts for pharmaceuticals remediation and pathogen inactivation: Design devotion, concept examination, and developments

“…It was discussed that the high degradation efficiencies obtained confirmed the synergistic effect between photocatalysis and PMS activation in the LDH/BiOBr/PMS/Vis system. The scavenger and EPR experiments indicated the prevalence of radical ( • O 2 - ) and non-radical ( 1 O 2 ) degradation of CIP [99] . Similar studies on Z-scheme mechanism activation of PMS/PDS have been explored by other researchers [95] , [98] , [104] , [105] , [106] , [107] , [108] for pharmaceuticals and other organic pollutant elimination.…”

“…The production of sulfate radicals is achieved through activation of peroxymonosulfate (HSO 5 − , PMS) or peroxydisulfate (PDS, S 2 O 8 2− ) by either homogeneous or heterogeneous photocatalysts [96] , [97] . Most recently, Z-scheme photocatalysts are used for heterogeneous activation of persulfate in photocatalytic removal of various water pollutants [95] , [98] , [99] . In heterogeneous activation of PMS/PDS, the other component if not both should be a metal or metals (Co, Mn, Fe, Cu, etc.)…”

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Figure 6 The degradation mechanism of iohexol drug on PM/PS/Vis system. The EPR signals of (b) DMPO-•OH and DMPO-SO 4 •− , (c) DMPO- • O 2 − and (d) TEMP- 1 O 2 in the PM-7/PS, PM-7/Vis and PM-7/PS/Vis systems [100] , (e) mechanism of charge generation for CIP degradation in the 8 wt% LDH/BiOBr/PMS/vis system, (f) Nitrogen adsorption-desorption isotherms, (g) EIS plots, (h) Transient photocurrent responses, and (i) PL spectra of BiOBr and its composites [99] .

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