부산대학교 도서관

For the application of photocatalysis, the development of noble metal-free cocatalysts is crucial. Here, a simple molecular fusion method was employed to create high crystallinity GQDs with the –NHNH 2 modification, which were then used as an effective metal-free cocatalyst in the photocatalytic H 2 evolution reaction. The modified –NHNH 2 Lewis base active sites, the quick charge separation channels, and the improved electric conductivity allowed the optimized NHNH 2 -GQDs/PUCN sample to exhibit an H 2 evolution rate of 204.2 μmol g−1 h−1, which is an 80-fold greater activity than that of pure PUCN. This work will provide insights into the design of metal-free cocatalysts for photocatalytic H 2 evolution applications. • High crystallinity GQDs with –NHNH 2 sites were synthesized through a facile molecular fusion strategy. • NH 2 NH-modified high crystallinity Graphene quantum dots/Carbon Nitride was prepared for photocatalytic hydrogen evolution. • The –NHNH 2 Lewis base active sites boost the photocatalytic hydrogen evolution activity. [ABSTRACT FROM AUTHOR]