The photocatalytic water splitting for hydrogen fuel by utilizing solar energy is considered a useful route to settle the energy crisis, but a bottleneck is occurred in developing a highly efficient photocatalysts. Herein, a facile method is applied to fabricate the holey carbon nitride (HCN) nanosheets with high crystallization network and extended optical absorption region by using the hydrothermal and microwave processes. The hydrothermal treatment of dicyandiamide will enable it to transform into the melamine-cyanaurate complex which would then form the ultrathin CN nanosheets with the abundant porous structure. And then the microwave-assisted thermolysis process helps the generation of g-C₃N₄ which retains the highly crystalline and the enhanced optical absorption region. Eventually, the highly crystalline network comes with the narrowed band gap and the higher specific surface area encounter in optimized g-C₃N₄ leading it exhibits a relatively high photocatalytic performance than pristine bulk carbon nitride which the hydrogen evolution rate of it reaching 81.6 μmol/h.

利用太阳能将氢光分解为氢燃料的光催化水被认为是解决能源危机的有效途径，但是在开发高效光催化剂方面出现了瓶颈。在本文中，通过水热和微波工艺，采用一种简便的方法来制备具有高结晶网络和扩展的光吸收区域的多孔氮化碳（HCN）纳米片。双氰胺的水热处理将使其转化为三聚氰胺-氰胺酸酯络合物，然后形成具有丰富多孔结构的超薄CN纳米片。然后微波辅助热解过程有助于生成gC ₃ N ₄保留了高度结晶和增强的光吸收区域。最终，高度结晶的网络在优化的gC ₃ N _4中遇到了较窄的带隙和更高的比表面积，这导致它比原始的本体氮化碳表现出相对较高的光催化性能，后者的氢释放速率达到81.6μmol/ h 。