State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, P. R. China.
Adv Mater. 2017 Jun;29(22). doi: 10.1002/adma.201700008. Epub 2017 Apr 12.
Tri-s-triazine-based crystalline carbon nitride nanosheets (CCNNSs) have been successfully extracted via a conventional and cost-effective sonication-centrifugation process. These CCNNSs possess a highly defined and unambiguous structure with minimal thickness, large aspect ratios, homogeneous tri-s-triazine-based units, and high crystallinity. These tri-s-triazine-based CCNNSs show significantly enhanced photocatalytic hydrogen generation activity under visible light than g-C N , poly (triazine imide)/Li Cl , and bulk tri-s-triazine-based crystalline carbon nitrides. A highly apparent quantum efficiency of 8.57% at 420 nm for hydrogen production from aqueous methanol feedstock can be achieved from tri-s-triazine-based CCNNSs, exceeding most of the reported carbon nitride nanosheets. Benefiting from the inherent structure of 2D crystals, the ultrathin tri-s-triazine-based CCNNSs provide a broad range of application prospects in the fields of bioimaging, and energy storage and conversion.
通过常规且经济高效的超声离心工艺，成功提取了基于三嗪的结晶型碳氮化纳米片（CCNNS）。这些 CCNNS 具有高度明确和明确的结构，厚度极小、纵横比大、均匀的三嗪基单元和高结晶度。与 g-C3N4、聚（三嗪亚胺）/LiCl 和块状三嗪基结晶碳氮化物相比，基于三嗪的 CCNNS 在可见光下表现出显著增强的光催化产氢活性。基于三嗪的 CCNNS 可从水甲醇进料中实现高达 420nm 时 8.57%的高光量子效率的制氢，超过了大多数报道的碳氮纳米片。受益于 2D 晶体的固有结构，超薄的基于三嗪的 CCNNS 为生物成像以及能量存储和转换等领域提供了广泛的应用前景。
