The design of unique structures for semiconductor photocatalysts is one of the most effective approach to stimulate their performance toward solar–to–chemical energy conversion. Herein, an interesting scheme has been introduced to produce hollow porous ZnFe₂O₄/AgCl/Ag/C nanotubes on the PDA@PANI nanofibers by a simple combined PANI capturing–PDA embedding–in situ graphitization process. In a first step, PDA@PANI were first prepared via a coaxial electrospinning process, followed by PANI capturing transition metal ions (Zn²⁺ and Fe²⁺) with the assistance of 2,5–dihydroxy–1,4–benzenedicarboxylic acid to convert these metal ions into PDA@PANI@MOF–74–Zn/Fe through thermal treatment. Then, AgCl cubes and Ag NPs were synthesized via in–situ embedding with various active groups of the PDA and its reducibility. At last, after calcination of the PDA@PANI@MOF–74–Zn/Fe/AgCl/Ag, ZnFe₂O₄/AgCl/Ag/C nanotubes with uniform distribution of graphitic carbon were successfully fabricated. Benefiting from the novel hollow porous structure, the obtained ZnFe₂O₄/AgCl/Ag/C exhibited outstanding H₂ evolution activity (e.g., 7524 µmol h⁻1 g⁻1) and high stability without engaging any cocatalyst, which is among the highest reported for ZnFe₂O₄–based materials with different morphologies and nanostructures.

半导体光催化剂独特结构的设计是最有效的方法，以刺激其朝着太阳到化学能的转化。本文介绍了一种有趣的方案，该方法通过简单的PANI捕获-PDA嵌入-原位石墨化工艺在PDA @ PANI纳米纤维上生产中空多孔ZnFe ₂ O ₄ / AgCl / Ag / C纳米管。第一步，首先通过同轴电纺丝工艺制备PDA @ PANI，然后PANI捕获过渡金属离子（Zn ²⁺和Fe ²⁺）在2,5–二羟基–1,4–苯二甲酸的协助下，通过热处理将这些金属离子转化为PDA @ PANI @ MOF–74–Zn / Fe。然后，通过与PDA的各种活性基团及其可还原性进行原位嵌入，合成了AgCl立方体和Ag NP。最后，在PDA @ PANI @ MOF–74–Zn / Fe / AgCl / Ag煅烧后，成功制备了石墨碳分布均匀的ZnFe ₂ O ₄ / AgCl / Ag / C纳米管。由该新型中空多孔结构中获益，将得到的ZnFe ₂ ö ₄ /氯化银/银/ C表现出优秀ħ ₂演化活性（例如，7524微摩尔ħ ^- 1克^-1）且不参与助催化剂的情况下具有很高的稳定性，这是具有不同形态和纳米结构的ZnFe ₂ O ₄基材料的最高报道。