In this communication, an important phenomenon of ion-inter-doping in semiconductor-coupling photocatalysts is reported. A series of Fe₂O₃-TiO₂ hollow nanofiber materials were successfully prepared via a two-step template-assisted dipping/adsorbing-calcining strategy. During the reaction process, Ti(OC₄H₈)₄, Fe(NO₃)₃·9H₂O and defatted cotton were just chosen as Ti source, Fe source, and template, respectively, and no other additives were introduced. Specifically, an ion-inter-doping phenomenon was demonstrated in Fe₂O₃-TiO₂ coupling materials by XRD and TEM results, which referred to Fe³⁺ ion into TiO₂ lattice (Fe³⁺/TiO₂) and Ti⁴⁺ ion into Fe₂O₃ lattice (Ti⁴⁺/Fe₂O₃). Therefore, the as-formed Fe₂O₃-TiO₂ material might be marked as semiconductor-coupling and ion-inter-doping materials (Ti⁴⁺/Fe₂O₃-Fe³⁺/TiO₂), and their photocatalytic performance are affected by ion-inter-doping and semiconductor-coupling.

在这种交流中，报道了半导体耦合光催化剂中离子相互掺杂的重要现象。通过两步模板辅助浸渍/吸附煅烧策略成功制备了一系列Fe ₂ O ₃ -TiO ₂中空纳米纤维材料。在反应过程中，仅选择Ti（OC ₄ H ₈）₄，Fe（NO ₃）₃ ·9H ₂ O和脱脂棉作为Ti源，Fe源和模板，而未引入其他添加剂。具体而言，在Fe ₂ O ₃ -TiO中表现出离子间掺杂现象。通过XRD和TEM结果得到_2种耦合材料，分别称Fe ³⁺离子进入TiO ₂晶格（Fe ³⁺ / TiO ₂）和Ti ⁴⁺离子进入Fe ₂ O ₃晶格（Ti ⁴⁺ / Fe ₂ O ₃）。因此，形成的Fe ₂ O ₃ -TiO ₂材料可能会被标记为半导体耦合和离子互掺杂材料（Ti ⁴⁺ / Fe ₂ O ₃ -Fe ³⁺ / TiO ₂），它们的光催化性能受离子互掺杂和半导体耦合的影响。