Although Bi₃O₄Cl is a kind of semiconductor catalyst driven by visible light, which possesses a layered structure and high chemical stability; however, the fast recombination of electron–hole pairs still limits its photocatalytic activity. In this work, the heterojunction combined Bi₃O₄Cl and Bi₄NbO₈Cl with a particle size of about 30–70 nm is constructed by a solid-state reaction method to improve the photocatalytic performance. XRD, TEM, XPS, and some other measurements are used to characterize the structure, morphology, and optical properties of the samples. Compared with Bi₃O₄Cl, the Bi₃O₄Cl/Bi₄NbO₈Cl Z-scheme photocatalyst shows a better photocatalytic performance, with 80% removal for ciprofloxacin (CIP) and 78% for bisphenol A (BPA) after 3-h illumination.

虽然Bi ₃ O ₄ Cl是一种可见光驱动的半导体催化剂，具有层状结构，化学稳定性高；然而，电子-空穴对的快速复合仍然限制了其光催化活性。本工作通过固相反应的方法构建了由Bi ₃ O ₄ Cl和Bi ₄ NbO ₈ Cl组合而成的粒径在30-70 nm左右的异质结，以提高光催化性能。XRD、TEM、XPS 和其他一些测量用于表征样品的结构、形态和光学性质。与 Bi ₃ O ₄ Cl 相比，Bi ₃ O ₄Cl/Bi ₄ NbO ₈ Cl Z型光催化剂表现出更好的光催化性能，在光照3小时后，环丙沙星（CIP）的去除率为80%，双酚A（BPA）的去除率为78%。