One-pot integration of S-doped BiOCl and ZnO into type-II photocatalysts: Simultaneously boosting bulk and surface charge separation for enhanced antibiotic removal

Ultrasound-Assisted Synthesis of a ZnO/BiVO4 S-Scheme Heterojunction Photocatalyst for Degradation of the Reactive Red 141 Dye and Oxytetracycline Antibiotic

“…Several techniques including adsorption were used to treat the pollutants in wastewater. However, the incomplete removal of the contaminants and the generation of secondary pollutants are the main drawbacks of these conventional methods. − Interestingly, a semiconducting photocatalytic route is a promising technique for complete removal of the toxic organic pollutants. ,, Basically, the commercially available TiO 2 is a UV-active photocatalyst with low photoactivity under natural sunlight. − The ZnO photocatalyst has gained much attention because it shows excellent transport property, is inexpensive, and has a versatile morphology. − In addition, based on our previous studies, controlled synthesis can be performed very easily for the creation of ZnO with high performance and also with a low cost of production. ,,− Therefore, in comparison to TiO 2 , ZnO is much cheaper and very easy to synthesize controllably. Nevertheless, low sunlight performance and occurrence of the photocorrosion are the main drawbacks influencing the practical application of ZnO .…”

“… 26 − 31 The ZnO photocatalyst has gained much attention because it shows excellent transport property, is inexpensive, and has a versatile morphology. 32 − 34 In addition, based on our previous studies, controlled synthesis can be performed very easily for the creation of ZnO with high performance and also with a low cost of production. 1 , 3 , 5 − 7 Therefore, in comparison to TiO 2 , ZnO is much cheaper and very easy to synthesize controllably.…”

In situ fabrication of BiOBrxCl1−x photocatalysts with a regulated electronic structure and enhanced visible light photocatalytic performance

“…4 BiOX (X = Cl, Br, I) compounds, which belong to the V-VI-VII ternary semiconductor compounds and have a layered structure characterized by [Bi 2 O 2 ] slabs interleaved by double slabs of halogen atoms, have attracted the attention of more and more researchers in recent years. 5 According to a previous report, BiOCl as a typical BiOX semiconductor has a layered structure, which can provide space large enough to polarize related atoms and orbitals, and is beneficial to enhancing the separation efficiency of hole-electron pairs. 6 Meanwhile, the indirect transition band gap of BiOCl can contribute to preventing the recombination of excited electron-hole pairs and accelerating charge transport, boosting the photocatalytic performance.…”

“…2d). 5 The high-solution XPS spectra of O 1s (Fig. 2b) can be divided into three peaks located at ∼530.1 eV, ∼531.3 eV, and ∼532.3 eV, which corresponded to surface hydroxyl groups (O S ), lattice oxygen atoms (O L ) and oxygen vacancies (OVs), respectively.…”