Synthesis of two-dimensional ultrathin photocatalytic materials towards a more sustainable environment

Abstract

Solar-driven chemcical processes are promissing alternatives to conventional chemical production, especially under the background of globally challenging faces by human, such as energy shortage, environment pollution and global warming. Designing...

Tailoring Surface Oxygen Vacancies in Tungsten Oxides for Surface Plasmon Resonance-Enhanced Near-Infrared Photoreduction of Cr(VI)

“…Because the interband transition of WO 3 is mainly located below 420 nm, the electrons in the VB of WO 3 cannot be excited into the CB, but only into the OVs below the CB. The photoreduction efficiency is similar between the ZIS/WO 3 -2 sample and pure ZIS, indicating that ZIS as the two-dimensional photocatalyst plays a key role in the transfer of the photogenerated carriers under this circumstance. , The slightly higher efficiency of the composite sample may be ascribed to the combination of the electrons in OVs of WO 3 and the holes in the VB of ZIS, which forms a Z-scheme pathway facilitating charge separation and improving Cr­(VI) reduction. , …”

“…The photoreduction efficiency is similar between the ZIS/WO 3 -2 sample and pure ZIS, indicating that ZIS as the two-dimensional photocatalyst plays a key role in the transfer of the photogenerated carriers under this circumstance. 44,45 The slightly higher efficiency of the composite sample may be ascribed to the combination of the electrons in OVs of WO 3 and the holes in the VB of ZIS, which forms a Z-scheme pathway facilitating charge separation and improving Cr(VI) reduction. 46,47 The performance of ZIS/WO 3 under NIR light is significantly enhanced compared to that of pristine WO 3 or ZIS, consistent with the broadband NIR absorption of the ZIS/WO 3 composite.…”

Integrated Microsystem Toward High‐Throughput Automated Green Synthesis and Raman Enhancement Performance Screening of Noble‐Metal@Cu‐MOF

“…"Green Synthesis" which derives from "Green Chemistry" and "Clean Production" lately received extensive attention. [1] Several green synthetic routes have been widely applied in drug synthesis [2,3] and diverse nanomaterials preparation (e.g., covalent-organic frameworks, [4][5][6] metal-organic frameworks, [7][8][9] 2D materials [10][11][12] and others. [13][14][15][16] ).…”

Enhancing the photocatalytic efficiency of two-dimensional aluminum nitride materials through strategic rare earth doping

“…[17][18][19][20][21][22] Compared to bulk materials, 2D structures offer larger specific surface areas, shorter carrier migration distances, and higher carrier mobility. [23][24][25] This reduced recombination of electrons and holes enhances vacancy activity and promotes carrier separation in photocatalysis, 26,27 significantly improving photocatalytic performance. For solar conversion applications, an ideal 2D semiconductor should possess (1) a suitable direct bandgap value less than 3.00 eV, (2) a water-splitting reaction potential within the bandgap, (3) the capacity for effective separation of excited carriers, and (4) a wide sunlight absorption range.…”