In this present work, a CuS/TiO₂ nano-tube arrays photoelectrode employed in environment purification was successfully prepared by an anodization process, with galvanostatic electrodeposition strategy as following method. Meanwhile, morphologies and chemical structures of the resulting photoelectrodes were studied by series of measurements. The results indicated that CuS nanoparticles were successfully assembled on the surface of well-ordered TiO₂ nano-tube arrays, which has significantly enhanced the photoelectrocatalyic activity by red-shifting the light absorption to visible region and increasing the photoinduced charge separation efficiency. What's more, when external potential was applied, CuS/TiO₂ nano-tube arrays photoelectrode displayed superior photoelectrocatalyic performance for elimination of penicillin G (99.1%) within 150 min visible light illumination. Moreover, the visible light photoelectrocatalyic degradation pathways of PEN G were proposed based on the HPLC-MS/MS measurements, which included decarboxylation and oxidation of the target organic, and finally mineralization to H₂O, CO₂, NH₄⁺ and NO₃⁻. This study demonstrated that the novel CuS/TiO₂ NTAs photoelectrode showed excellent PEC activity, which had great potential in applications of environmental remediation.

在本工作中，通过阳极氧化工艺成功制备了用于环境净化的CuS / TiO ₂纳米管阵列光电极，并采用恒电流电沉积策略如下。同时，通过一系列测量研究了所得光电极的形态和化学结构。结果表明，CuS纳米粒子成功地组装在有序的TiO ₂纳米管阵列的表面上，通过将光吸收红移到可见区并提高光诱导的电荷分离效率，显着增强了光电催化活性。此外，当施加外部电势时，CuS / TiO ₂纳米管阵列光电极在150分钟可见光照射下显示出优异的光电催化性能，可消除青霉素G（99.1％）。此外，基于HPLC-MS / MS测量，提出了PEN G的可见光光电催化降解途径，包括目标有机物的脱羧和氧化作用，最后矿化为H ₂ O，CO ₂，NH ₄ ⁺和NO _3。^-。这项研究表明，新型的CuS / TiO ₂ NTAs光电极表现出优异的PEC活性，在环境修复应用中具有巨大的潜力。