Solar hydrogen energy generation via photocatalysis can play a vital role in reducing global warming, environmental pollution, and the ever-increasing energy demand. Herein, phosphorus and Ni complex modified g-C₃N₄ were prepared by a hydrothermal method. The bonding of electron-rich phosphorous heteroatom to the g-C₃N₄ changed the morphology of the g-C₃N₄ from nanosheets into nano-rods and significantly altered the electronic structure, as evident by the shift in the conduction band edge and bandgap of g-C₃N₄. FTIR and XPS measurements revealed

that the triazine ring is oxygen functionalized and the P atom bonded to g-C₃N₄ via PN bond. Furthermore, EPR, UPS, and UV-DRS measurements revealed that the P and Ni complex reduced the localized π-conjugated structure defects of g-C₃N₄ and extended the light absorption into the near IR region. The Ni complex in the photocatalysts provided the additional charge transfer band of IMCT and OMCT. EDS color mapping revealed that the Ni complex is distributed uniformly on the P-g-C₃N₄ surface. These surface embedded Ni complex acts as an electron trap state, thereby suppressing the charge pair recombination rate which was confirmed by the PL and TRPL measurements. The synergetic effect of Ni complex and P resulted in 86 % tetracycline degradation in 20 min. and 3272 μmol/g of H₂ production in 4 h. Compared to bulk g-C₃N₄, 818 times higher H₂ production activity was achieved for the P and Ni complex modified g-C₃N₄.

通过光催化产生的太阳能氢能在减少全球变暖，环境污染以及不断增长的能源需求方面起着至关重要的作用。在此，通过水热法制备了磷和Ni络合物改性的gC ₃ N ₄。富电子-磷杂原子以GC的接合₃ Ñ ₄改变的GC形态₃ Ñ ₄通过GC的导带边缘的移位和带隙从纳米片成纳米棒和显著改变了电子结构，明显₃ N ₄。FTIR和XPS测量结果显示

表明三嗪环被氧官能化并且P原子通过P N键与gC ₃ N ₄结合。此外，EPR，UPS和UV-DRS测量表明，P和Ni配合物减少了gC ₃ N ₄的局部π共轭结构缺陷，并将光吸收扩展到了近IR区域。光催化剂中的Ni络合物提供了IMCT和OMCT的附加电荷转移带。EDS颜色映射显示Ni络合物均匀分布在PgC ₃ N _4上表面。这些表面嵌入的Ni配合物充当电子陷阱状态，从而抑制了由PL和TRPL测量证实的电荷对复合率。Ni配合物和P的协同作用导致20分钟内86％的四环素降解。在4小时内产生了3272μmol/ g的H ₂。与块状gC ₃ N ₄相比，P和Ni络合物修饰的gC ₃ N _4的H ₂生产活性提高了818倍。