Construction of a visible-light-driven magnetic dual Z-scheme BiVO4/g-C3N4/NiFe2O4 photocatalyst for effective removal of ofloxacin: Mechanisms and degradation pathway

Construction of a Z-scheme g-C3N4/NBGO/BiVO4 heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism

“…The BQ, IPA, and EDTA-2Na were selected as bursting agents for the superoxide radicals (˙O 2 − ), hydroxyl radicals (˙OH), and photogenerated holes (h + ) scavengers, respectively. 64,69–72 As shown in Fig. 11a, the degradation rate of TC decreased from 83.4% to 42.3% and 48.8% when BQ and EDTA-2Na were added to the reaction solution, respectively, and the reaction rate constants also decreased from 0.01617 to 0.00615 and 0.00559 min −1 , respectively, which indicated that ˙O 2 − and h + were the main reactive species responsible for the degradation of TC, and the TC degradation ratio was reduced only by about 13.3% when IPA was added into the reaction solution, indicating that ˙OH played a secondary role in the photodegradation process.…”

Facile fabrication of electrospun g-C3N4/Bi12O17Cl2/poly(acrylonitrile-co-maleic acid) heterojunction nanofibers for boosting visible-light catalytic ofloxacin degradation

“…S7, ESI†), which demonstrated that the E-spun g-C 3 N 4 /Bi 12 O 17 Cl 2 (1 : 3)/PANCMA NFs were stable and reusable. Compared with the other reported photocatalytic materials in Table S3 (ESI†), 31–38 the E-spun g-C 3 N 4 /Bi 12 O 17 Cl 2 (1 : 3)/PANCMA was superior in terms of removal time, removal efficiency and recycled use for OFL removal.…”

“…2A, two characteristic peaks of the g-C 3 N 4 at 2 θ of 13.2° and 27.4° were ascribed to the (100) and (002) diffraction planes. 31,34,37,42 The diffraction peaks of Bi 12 O 17 Cl 2 at 2 θ values of 23.86°, 25.91°, 30.29°, 32.65°, 33.40°, 46.83°, 46.93°, 54.90°, and 56.87° can be attributed to the (111), (113), (115), (117), (0012), (2012), (220), (307), and (317) of the standard phase Bi 12 O 17 Cl 2 (JCPDS Card No. 37-0702).…”

“…Antibiotics are a significant class of emerging organic contaminants (EOCs), and have been widely detected in various water samples from tap water, surface water, groundwater, to waste water, 16–18 and therefore, many approaches, including adsorption methods, 19,20 ozonation-based treatments, 21 microalgae-based technology, 22 electrochemical methods 23 and especially photocatalytic degradation, 24–40 have been developed to remove antibiotics from water samples. Among these approaches, the photocatalytic degradation method has become the preferred approach for antibiotics removal with high degradation efficiency, and thus some novel photocatalysts such as WO 3 /Bi 2 MoO 6 , 25 Bi 2 WO 6 /Ta 3 N 5 , 26 Ag/Ag 2 S/Bi 2 MoO 6 , 27 Bi 2 Sn 2 O 7 /Bi 2 MoO 6 , 29 tetra (4-carboxyphenyl)porphyrin/Bi 2 MoO 6 , 30 MoO 3 /Ag/C 3 N 4 , 31 UiO-67/CdS/rGO, 32 Bi 2 MoO 6 -rGO-TiO 2 , 33 BiVO 4 /g-C 3 N 4 /NiFe 2 O 4 , 34 Bi 2 WO 6 , 35 ZnO/Bi 2 MoO 6 , 36 g-C 3 N 4 /NH 2 -MIL-88B(Fe), 37 UiO-66/wood, 38 and BiOCl/Cu-doped Bi 2 S 3 composites 39 have been fabricated and applied for antibiotics degradation. However, these reported photocatalysts were powders, which limited their practical applications because of at least two obvious problems: (1) the recovery and recycling of the powdered photocatalysts in the degradation process and (2) the loss of photocatalytic activity of the photocatalyst.…”

Fenton Degradation of Ofloxacin Using a Montmorillonite–Fe3O4 Composite

“…Their presence is a threat to the ecological environment due to their chemical stability and slow biodegradation since antibiotics are harmful to microorganisms [2,3]. Among the antibiotics, ofloxacin (OFL) is an extensively used 2nd-generation fluoroquinolone due to its good antibacterial activity [4,5]. It is commonly used to treat bronchitis, infectious diarrhea, pneumonia, pelvic inflammatory disease, eye infections, ear infections, gonorrhea, respiratory tract infections, urinary tract infections, gastrointestinal infections, and skin infections [6][7][8].…”