Decoration engineering induced MoS2QDs/BiOBr heterostructures for significantly enhancing visible light photocatalytic capability for the organic dyes and antibiotics removal

Construction of highly efficient MoS2/BiOBr heterojunction for photocatalytic degradation of Rhodamine B

“…Downturns of degradation was noticed in the experiment when the MoS2 loading increased beyond 2wt% MoS2, indicating the photocatalytic activity of 3wt% MoS2-BiOBr had a decreasing. This result corresponded to prior experimental literature [10][11][12]. From figure 3a, when the reaction time was up to 60 min, the degradation efficiency of 2wt%MoS2/BiOBr was 96.0% and the of 1wt%MoS2/BiOBr-2 heterostructures was 94.4%, and 3wt%MoS2/BiOBr was 93.1%.…”

In situ synthesis of a Bi2O3 quantum dot decorated BiOCl heterojunction with superior photocatalytic capability for organic dye and antibiotic removal

“…In order to further verify the active species in the photocatalytic process, the trapping experiments were carried out by adding three trapping agents in RhB solution, such as EDTA-2Na for holes (h + ), benzoquinone (BQ) for superoxide radicals (˙O 2 − ) and tert -butyl alcohol (TBA) for hydroxyl radicals (˙OH). 51 The results are illustrated in Fig. 9b .…”

“…49 Therefore, when excited by light, the photogenerated electrons in the CB of BiOCl could be transferred to the CB of Bi ). 51 The holes in the VB (E VB = 3.13 eV) of the Bi 2 O 3 QDs can oxidize OH − into hydroxyl radicals (cOH) (2.38 eV/NHE). 51 In this way, the photo-induced carriers of the catalysts are effectively separated and the strong photocatalytic redox ability are retained in the heterojunction to degrade the pollutants.…”