3D reticulated carbon nitride materials highuniformly capture 0D black phosphorus as 3D/ 0D composites for stable and efficient photocatalytic hydrogen evolution

作者：Song, Ting; Zeng, Gongchang; Zhang, Piyong; Wang, Tingting; Ali, Atif; Huang, Shaobin; Zeng, Heping^*

来源：Journal of Materials Chemistry A, 2019, 7(2): 503-512.

DOI：10.1039/c8ta09647c

• VISIBLE-LIGHT
• CHARGE SEPARATION
• POROUS G-C3N4
• WATER
• NANOSHEETS
• COCATALYST
• HETEROSTRUCTURE
• NANOSTRUCTURES
• FABRICATION
• CATALYSTS

Black phosphorus has recently emerged as an excellent 2D semiconductor with high charge-carrier mobility and wide tunable bandgap for photocatalysis. In this research, a simple method was developed to manufacture reticulated carbon nitride materials (CN-4N). Utilizing the self-capturing property of CN-4N to capture black phosphorus quantum dots (BQ) uniformly dispersed in aqueous solution, BQ were successfully implanted in the interior surface of CN-4N to form a unique structure instead of the normal exterior surface contact pattern. The optimized CN-4N(BQ) showed good stability and achieved an excellent hydrogen production rate of 13.83mmol h(-1) g(-1), which was 3.3- and 35.5-fold higher than that of CN-4N and bulk CN (NCN), respectively. The experimental results illustrated that the greatly improved photocatalytic performance of CN-4N(BQ) was attributed to the joint actions of the abundant active sites provided by the ultra-porous structure, the excellent vis-NIR absorption capability, the spatially separated reactive sites for the redox reaction, and the greatly enhanced photoinduced electron-hole separation efficiency. This research provides novel insight for the rational fabrication of CN-based hybrids for various applications.

• 出版日期2019-1-14
• 单位华南理工大学