New visible-light-induced photocatalysts were synthesized through a hydrothermal method, which possess excellent activation efficiency for potassium persulfate (PS) to remove water contaminants. The features of as-synthesized nanocomposites were studied by different instruments. The results showed that the binary ZnO/CuBi₂O₄ (5.0 %) sample has best photocatalytic capability in the elimination of methyl orange (MO), rhodamine B (RhB), and Congo red (CR). The photodegradation rate constant of RhB over the ZnO/CuBi₂O₄ (5.0 %) photocatalyst in the existence of 1.48 mM of PS ions, was 178 × 10⁻⁴ min⁻¹, which is about 26.4, 5.11, 4.31, and 2.44-times as large as the pristine ZnO, PS ions, ZnO/PS, and ZnO/CuBi₂O₄ (5.0 %) nanocomposite, respectively. The improving photodegradation efficiency was attributed to larger surface area, high absorption of visible light, and the formation of heterojunction at the interface of ZnO and CuBi₂O₄ nanoparticles. In our view, this study supplies a new method for the production of effective heterojunction photocatalysts using ZnO, which could solve environmental problems according to the practical requirements.

通过水热法合成了可见光诱导的新型光催化剂，该催化剂对过硫酸钾（PS）具有很强的去除水污染物的活化效率。用不同的仪器研究了合成纳米复合材料的特性。结果表明，二元ZnO / CuBi ₂ O ₄（5.0％）样品在消除甲基橙（MO），若丹明B（RhB）和刚果红（CR）方面具有最佳的光催化能力。在存在1.48 mM PS离子的条件下，RhB在ZnO / CuBi ₂ O ₄（5.0％）光催化剂上的光降解速率常数为178×10 ^-4  min ^-1分别约为原始ZnO，PS离子，ZnO / PS和ZnO / CuBi ₂ O ₄（5.0％）纳米复合材料的26.4、5.11、4.31和2.44倍。光降解效率的提高归因于更大的表面积，对可见光的高吸收以及在ZnO和CuBi ₂ O ₄纳米粒子的界面处形成异质结。我们认为，这项研究提供了一种使用ZnO生产有效的异质结光催化剂的新方法，该方法可以根据实际需要解决环境问题。