Herein, we rationally constructed a hybrid heterostructure comprising porous g-C₃N₄ (CN)-encapsulated anatase TiO₂ hollow spheres (TOHS) via a synthesis method that involves hydrothermal and calcination treatments. The fabricated hybrid, termed CN/TOHS, demonstrated extraordinary activity toward the degradation of environmentally toxic pharmaceutical substances (acetaminophen and ciprofloxacin) in aqueous solutions under simulated sunlight irradiation; the activity of CN/TOHS was superior to that attained for individual TOHS and CN counterparts. In particular, the CN/TOHS hybrid containing 13.3 wt.% of CN on TOHS displayed the optimum degradation activity among the tested catalysts used in this study, and it also possessed exceptional recyclability and stability during consecutive degradation tests. The remarkable photocatalytic activity and stability of the hybrid were predominantly ascribed to the large solid interfacial contact between constituents, TOHS and CN, induced by effective hybrid structure, which boosted the interfacial charge transfer and impeded with the direct recombination of photo-induced charges. Notably, the results of the liquid chromatography–mass spectrometry analysis corroborated the effective mineralization of model pharmaceutical pollutants in the presence of the CN/TOHS hybrid. The simple interfacial engineering strategy presented in this study offers a potential route for the rational design of novel catalysts for application in environmental remediation and solar energy conversion.

在这里，我们合理地构建了包含多孔gC ₃ N ₄（CN）封装的锐钛矿型TiO ₂的杂化异质结构。空心球（TOHS），其合成方法涉及水热和煅烧处理。人工合成的杂合物，被称为CN / TOHS，在模拟的阳光照射下，对水溶液中对环境有毒的药物（对乙酰氨基酚和环丙沙星）的降解具有非凡的活性。CN / TOHS的活性优于单独的TOHS和CN对应物。尤其是，在本研究中使用的测试催化剂中，在TOHS上含13.3 wt。％CN的CN / TOHS杂化物表现出最佳的降解活性，在连续的降解试验中，它还具有出色的可回收性和稳定性。杂种的出色的光催化活性和稳定性主要归因于组分之间的大量固体界面接触，有效的杂化结构诱导了TOHS和CN，这促进了界面电荷转移，并阻碍了光诱导电荷的直接重组。值得注意的是，液相色谱-质谱分析的结果证实了在存在CN / TOHS杂化物的情况下模型药物污染物的有效矿化作用。本研究中提出的简单界面工程策略为合理设计用于环境修复和太阳能转化的新型催化剂提供了一条潜在途径。液相色谱-质谱分析的结果证实了在存在CN / TOHS杂化物的情况下模型药物污染物的有效矿化作用。本研究中提出的简单界面工程策略为合理设计用于环境修复和太阳能转化的新型催化剂提供了一条潜在途径。液相色谱-质谱分析的结果证实了在存在CN / TOHS杂化物的情况下模型药物污染物的有效矿化作用。本研究中提出的简单界面工程策略为合理设计用于环境修复和太阳能转化的新型催化剂提供了一条潜在途径。