P-type bismuth oxychloride (p-BiOCl) nanosheets were uniformly grown on n-type zinc ferrite (n-ZnFe₂O₄) electrospun nanofibers via a solvothermal technique to form hierarchical heterostructures of p-BiOCl/n-ZnFe₂O₄ (p-BiOCl/n-ZnFe₂O₄ H-Hs). The density and loading amounts of the BiOCl nanosheets with exposed {0 0 1} facets were easily controlled by adjusting the reactant concentration in the solvothermal process. The p-BiOCl/n-ZnFe₂O₄ H-Hs exhibited enhanced visible-light photocatalytic activities for the degradation of Rhodamine B (RhB). The apparent first-order rate of the p-BiOCl/n-ZnFe₂O₄ H-Hs and its normalized constant were about 12.6- and 8-fold higher than pure ZnFe₂O₄ nanofibers. This suggests that both the improved charge separation efficiency from the uniform p-n heterojunctions and the enlarged active surface sites from the hierarchical structures increase the photocatalytic performances. Furthermore, the p-BiOCl/n-ZnFe₂O₄ H-Hs could be efficiently separated from the solution with an external magnetic field via the ferromagnetic behavior of ZnFe₂O₄ nanofibers. The magnetic p-BiOCl/n-ZnFe₂O₄ H-Hs with enhanced visible-light photocatalytic performances might have potential applications in water treatment.

通过溶剂热技术在n型铁氧体（n-ZnFe ₂ O ₄）电纺纳米纤维上均匀生长p型三氯氧化铋（p-BiOCl）纳米片，以形成p-BiOCl / n-ZnFe ₂ O ₄（对-BiOCl / n-ZnFe ₂ O ₄ H-Hs）。通过调节溶剂热过程中的反应物浓度，可以轻松控制具有暴露的{0 0 1}面的BiOCl纳米片的密度和负载量。p-BiOCl / n-ZnFe ₂ O ₄ H-Hs对罗丹明B（RhB）的降解表现出增强的可见光光催化活性。p-BiOCl / n-ZnFe ₂ O ₄的表观一级速率H-Hs及其归一化常数比纯ZnFe ₂ O ₄纳米纤维高约12.6和8倍。这表明，从均匀的pn异质结提高的电荷分离效率和从分层结构获得的扩大的活性表面位点都提高了光催化性能。此外，可以通过ZnFe ₂ O ₄纳米纤维的铁磁行为，在外部磁场的作用下有效地从溶液中分离出p-BiOCl / n-ZnFe ₂ O ₄ H-Hs 。具有增强的可见光光催化性能的磁性p-BiOCl / n-ZnFe ₂ O ₄ H-Hs可能在水处理中具有潜在的应用。