Visible-light-driven water splitting by yolk-shelled ZnIn2S4-based heterostructure without noble-metal co-catalyst and sacrificial agent

Heteroatom-induced domain electrostatic potential difference in ZnIn2S4nanosheets for efficient charge separation and boosted photocatalytic overall water splitting

“…4d). It is obvious that the Al-ZIS nanosheets are greatly advanced than other catalysts based on metal sulphides, 9,21,23,24 which can be attributed to the fact that Al doping promotes the mobility of photogenerated holes, and the ultrathin nanosheets shorten the diffusion distance of the photogenerated holes from the active sites to the surface.…”

Shining light on ZnIn2S4 photocatalysts: Promotional effects of surface and heterostructure engineering toward artificial photosynthesis

“…Herein, Mao's team introduced the yolk‐shelled ZnIn 2 S 4 ‐based heterostructure with the addition of dual cocatalysts, with the architecture being a key role in delivering increased reduction sites for HER. In this system, ZnIn 2 S 4 served as the visible light sensitizer, NiCo 2 S 4 as the HER cocatalyst as well as a growth template, and Co 3 O 4 as the OER cocatalyst 257 . In the route of achieving both direct Z‐scheme heterojunction and cocatalyst in one system, Du et al 53 have synthesized a hierarchical core‐shell structure ternary system, where BiVO 4 and ZnIn 2 S 4 form an intimate solid–solid contact interface for the Z‐scheme charge transfer, while Ti 3 C 2 MXene QDs work as the cocatalyst by having Schottky barrier at the ZnIn 2 S 4 /Ti 3 C 2 interface (Figure 15E).…”

“…In this system, ZnIn 2 S 4 served as the visible light sensitizer, NiCo 2 S 4 as the HER cocatalyst as well as a growth template, and Co 3 O 4 as the OER cocatalyst. 257 In the route of achieving both direct Z-scheme heterojunction and cocatalyst in one system, Du et al 53 have synthesized a hierarchical core-shell structure ternary system, where BiVO 4 and ZnIn 2 S 4 form an intimate solid-solid contact interface for the Z-scheme charge transfer, while Ti 3 C 2 MXene QDs work as the cocatalyst by having Schottky barrier at the ZnIn 2 S 4 /Ti 3 C 2 interface (Figure 15E). The situation is further aided by the multiple hydrophilic functionalities of Ti 3 C 2 MXene that promote the catalytic interaction with water molecules, therefore assisting the yield of active substances, with an AQE (460 nm) achieved at 2.9%.…”

Bifunctional Cobalt‐Doped ZnIn2S4 Hierarchical Nanotubes Endow Noble‐Metal Cocatalyst‐Free Photocatalytic H2 Production Coupled with Benzyl Alcohol Oxidation

“…[ 23 ] Unfortunately, large‐scale practical applications of above noble‐metal‐based cocatalysts have been extremely confined since the scarcity and high cost of noble metals. [ 25,26 ] Thus, developing cocatalyst‐free photocatalysts with high catalytic activity is a highly meaningful but challenging target. Generally, element doping could modulate the energy band structure by creating extra states between conduction band (CB) and valance band (VB), which is beneficial to suppress the recombination of photoinduced e − –h + pairs and strengthen the absorption range of light.…”

“…[23] Unfortunately, large-scale practical applications of above noblemetal-based cocatalysts have been extremely confined since the scarcity and high cost of noble metals. [25,26] Thus, developing cocatalyst-free photocatalysts with high catalytic activity is a highly meaningful but challenging target. Generally, element doping could modulate the energy band structure by creating DOI: 10.1002/solr.202101042 Noble metals are widely used as cocatalysts to enhance the performance of photocatalysts, while large-scale applications of noble metals are restricted due to their scarcity and high cost.…”