Improving visible-light-driven photocatalytic NO oxidation over BiOBr nanoplates through tunable oxygen vacancies

Efficient Degradation of Phenol and 4‐Nitrophenol by Surface Oxygen Vacancies and Plasmonic Silver Co‐Modified Bi2MoO6 Photocatalysts

“…To achieve such a goal, the introduction of oxygen vacancies on the semiconductor surface is proposed. It is widely recognized that surface oxygen vacancies (SOVs) would play a critical role in the photocatalytic process, especially in terms of the photocatalytic degradation of pollutants, because they can narrow down the bandgaps of semiconductors and tailor their electronic structures . Recently, some studies clearly demonstrated that the introduction of SOVs within semiconductor photocatalysts not only extended the visible‐light response region but also accelerated the separation of photogenerated electrons and holes, leading to high photocatalytic activity .…”

“…It is widely recognized that surfaceo xygen vacancies( SOVs) would play ac ritical role in the photocatalytic process, especially in terms of the photocatalytic degradationo fp ollutants, [19] because they can narrowd own the bandgaps of semiconductors and tailor their electronic structures. [20] Recently,s ome studies clearly demonstratedt hat the introductiono fS OVs within semiconductor photocatalysts not only extended the visible-light response region but also accelerated the separation of photogenerated electrons andholes, leading to high photocatalytic activity. [21][22][23][24] For example, Lv and co-workersr eported the introduction of SOVs in BiPO 4 by controllable hydrogen reduction, [25] and that the presence of oxygen vacancies in BiPO 4 resulted in broadening the valence band width and narrowing the bandgap, thus leadingt oa ne xtended photoresponsew avelength range and enhanced photocatalytic performance.…”

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

“…Liao and coworkers (2018) reported that the number of OVs in BiOBr could be regulated by changing the water/ethylene glycol ratio during the solvothermal process. The introduction of OVs provides abundant active sites and electrons for O 2 molecular adsorption and activation, which dramatically promotes the production of reactive oxygen species (ROS) for the photocatalytic removal of NO [23]. In sum, these studies conclude that the abundance of OVs on the catalyst surface was an important factor regulating H 2 O 2 (O 2 ) adsorption and ROS generation via a heterogeneous Fenton-like reaction.…”

Facile construction of Bi2Mo3O12@Bi2O2CO3 heterojunctions for enhanced photocatalytic efficiency toward NO removal and study of the conversion process

“…Generally, semiconductor materials, which act as photocatalysts, are one of the determinant factors in semiconductor photocatalytic technology. Among various photocatalysts, Bi-based alternative materials such as Bi2O2CO3 [6], Bi2WO6 [7,8], Bi4MoO9 [9], and BiOX (X = Br, I, Cl) [3,[10][11][12] have shown great potential for application in photocatalytic NO removal, due to their suitable bandgaps, outstanding stabilities, and non-toxic features.…”