In this research, a novel Cu₂O/ZnO-PANI ternary nanocomposite was synthesized via a facile one-pot solvothermal method and in-situ polymerization of aniline at room temperature. The ternary composite Cu₂O/ZnO-PANI having Z-scheme heterojunction properties displayed outstanding adsorption properties, super-fast photocatalytic activities as well as enhanced stability. The modification with PANI led to the increase of the surface area of the composite to 45.32 m² g⁻¹ as compared with that of Cu₂O (8.82 m² g⁻¹) and Cu₂O/ZnO (35.66 m² g⁻¹). The photodegradation of Congo Red dye was studied with pure Cu₂O, Cu₂O/ZnO, and Cu₂O/ZnO-PANI composite photocatalysts and serves as a model photocatalytic reaction for the composite. The highest degradation efficiency by Cu₂O/ZnO-PANI was up to 100% after 30 min, much higher than that of Cu₂O (81%), and Cu₂O/ZnO (94%). The optimized composite was still active in the subsequent photocatalytic degradation of Congo Red, retaining more than 92% of the initial degradation efficiency even after the fifth cycle. This interesting activity can be attributed to the large surface area of the catalyst and the quenching of the photoluminescence, which led to the effective separation of electron/holes and subsequent reduction in the rate of recombination of the charged carriers. Likewise, the photocorrosion of Cu₂O was successfully prevented, thereby forming a stable ternary photocatalyst. This work can provide a technique to improve the photocatalytic activity of photocatalysts through the processing of ternary nanocomposites utilizing conductive polymers.

本研究通过一种简便的一锅溶剂热法和室温下苯胺的原位聚合反应合成了一种新型的Cu ₂ O / ZnO-PANI三元纳米复合材料。具有Z型异质结特性的三元复合Cu ₂ O / ZnO-PANI具有出色的吸附性能，超快的光催化活性和增强的稳定性。与Cu ₂ O（8.82 m ² g ^-1）和Cu ₂ O / ZnO（35.66 m ² g- ）相比，PANI改性导致复合材料的表面积增加至45.32 m ² g ^{-1 。 1个}）。研究了纯Cu ₂ O，Cu ₂ O / ZnO和Cu ₂ O / ZnO-PANI复合光催化剂对刚果红染料的光降解作用，并将其作为复合物的模型光催化反应。30分钟后，Cu ₂ O / ZnO-PANI的最高降解效率高达100％，远高于Cu ₂ O（81％）和Cu _2的降解效率。O / ZnO（94％）。经过优化的复合材料在随后的刚果红光催化降解中仍然具有活性，即使在第五次循环后仍保持超过92％的初始降解效率。这种有趣的活性可以归因于催化剂的大表面积和光致发光的猝灭，这导致了电子/空穴的有效分离并随后降低了带电载流子的复合速率。同样，成功地防止了Cu ₂ O的光腐蚀，从而形成稳定的三元光催化剂。这项工作可以提供一种通过利用导电聚合物处理三元纳米复合材料来提高光催化剂的光催化活性的技术。