磷掺杂氮化碳纳米管/氧化铈光催化高效产H_(2)O_(2)和降解污染物

P-Doped Carbon Nitride Nanotube/Cerium Oxide Photocatalyzed H_(2)O_(2) Production and Pollutant Degradation Efficiently

在本工作中,我们通过分子自组装成功制备了磷掺杂g-C_(3)N_(4)空心管(P-CNT),然后在P-CNT表面平行原位生长CeO_(2)量子点,构建了0D/1D界面相。在可见光照射下,稳定的P-CNT/CeO_(2)异质结构与单组分和单掺杂复合材料相比,有优异的H_(2)O_(2)的产量以及四环素降解方面有显著改善。这种增强的光催化性能源于P掺杂和异质结界面接触的协同效应。掺杂形成的管状结构不仅缩小了带隙,从而增强了CNT的可见光收集能力,而且促进了电子在一维纵向和径向方向上的传播。

In this work,we successfully fabricated phosphorus doped g-C_(3)N_(4)hollow tubes(P-CNT)via molecular self-assembly,and then grow theCeO_(2)quantum dots in situ parallel on the surface of P-CNT to construct 0D/1D interfacial phase.Under visible light irradiation,stable P-CNT/CeO_(2)heterostructures had higher H_(2)O_(2)production and significantly improved tetracycline degradation compared with single-component and single-doped composites.This enhanced photocatalytic performance originates from the synergistic effect of P doping and heterojunction interfacial contact.The tubular structure formed by co-doping not only narrows the band gap,thereby enhancing the visible light collection capability of CN,but also promotes electron propagation along one-dimensional longitudinal and radial directions.