A review of material aspects in developing direct Z-scheme photocatalysts

Design of well-defined shell–core covalent organic frameworks/metal sulfide as an efficient Z-scheme heterojunction for photocatalytic water splitting

“…7,8 However, the traditional inorganic Z-scheme heterojunctions consisting of two inorganic semiconductors are limited in many vital aspects, such as aligned band structures, interfacial contact area and transmission of substrates in the process of photocatalytic reactions, resulting in poor photocatalytic efficiency. 9,10 Recently, a combination of inorganic semiconductors and organic components has been proposed as a feasible strategy to improve the photocatalytic efficiency of photocatalysts. [11][12][13] Among them, covalent-organic frameworks (COFs), porous and crystalline organic semiconductors, are attractive building blocks for the construction of photocatalysts, owing to their high visible light absorption capacity and fast charge-carrier mobility.…”

“… 7,8 However, the traditional inorganic Z-scheme heterojunctions consisting of two inorganic semiconductors are limited in many vital aspects, such as aligned band structures, interfacial contact area and transmission of substrates in the process of photocatalytic reactions, resulting in poor photocatalytic efficiency. 9,10 …”

Photocatalytic Conversion of Methane: Recent Advancements and Prospects

“…[61] This traditional transfer promotes the separation of electrons and holes and leads to ar eduction in the redox capacity.T he fabrication of Z-scheme photocatalysts is af easible way to improve the separation of charge carriers while maintaining the redox potential. [62] Under the irradiation of light, the photogenerated electrons directly transfer from the CB of SC1 to the VB of SC2, where they combine with the holes.At the same time,the strongly oxidative holes are isolated in the VB of SC1 while the reductive electrons are in the CB of SC2 (Figure 7b). In addition, the reasonable construction of aZscheme can also extend the absorption range of the photocatalysts to ac ertain extent.…”

Photocatalytic Conversion of Methane: Recent Advancements and Prospects

“…[61] This traditional transfer promotes the separation of electrons and holes and leads to ar eduction in the redox capacity.T he fabrication of Z-scheme photocatalysts is af easible way to improve the separation of charge carriers while maintaining the redox potential. [62] Under the irradiation of light, the…”