As the potential candidates for photodegradating pharmaceutical pollutants, the highly efficient, stable and recyclable Z-scheme photocatalysts, that are superior to the widely studied heterojunction photocatalysts, are very fascinating yet challenging. Herein, hollow structured InVO₄/CeVO₄ nanobelts with large heterogeneous interface and huge internal cavity are well-designed and prepared through an efficient electrospinning-calcination route. Owing to a large surface-to-bulk ratio, when used as visible-light photocatalytic materials for photochemical decomposition of the residual tetracycline (TC) aqueous solution, these InVO₄/CeVO₄ hollow nanobelts with porous structure and nanocrystal subunits exhibit excellent photocatalytic activity and very high stability, compared with pristine CeVO₄ and InVO₄ nanobelts. A possible Z-scheme reaction mechanism for the enhanced photocatalytic performance is tentatively proposed by PL, active species trapping experiments, XPS and EPR analysis, as well as calculated work functions of different crystal faces. This work underlines the importance of heterojunction construction, and presents a feasible protocol for the rational design of active photocatalysts under solar light for the photodegradation of environmental pollutants or for environmental purification.

作为光降解药物污染物的潜在候选者，优于广泛研究的异质结光催化剂的高效，稳定和可循环使用的Z型光催化剂非常引人入胜，但却极具挑战性。在此，通过有效的电纺丝煅烧途径，精心设计并制备了具有大的异质界面和巨大的内腔的中空结构InVO ₄ / CeVO ₄纳米带。由于大的表面/本体比，这些InVO ₄ / CeVO ₄用作可见光光催化材料，用于残留四环素（TC）水溶液的光化学分解。与原始的CeVO ₄和InVO ₄纳米带相比，具有多孔结构和纳米晶体亚基的中空纳米带具有出色的光催化活性和很高的稳定性。PL，活性物种捕获实验，XPS和EPR分析，以及计算出的不同晶面的功函数，初步提出了可能的Z方案反应机制，以提高光催化性能。这项工作强调了异质结结构的重要性，并提出了一种可行的方案，用于合理设计太阳光下的活性光催化剂，以进行环境污染物的光降解或环境净化。