Pure CeVO₄ and Dy-doped CeVO₄ nanorods containing different weight contents of Dy dopant were synthesized by hydrothermal method. Effect of Dy dopant on photodegradation of methylene blue (MB) and rhodamine B (RhB) was evaluated under UV light irradiation within 80 min. Pure CeVO₄ and Dy-doped CeVO₄ nanorods were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and UV–visible spectroscopy. In this research, CeVO₄ nanorods are tetragonal phase with the detection of main peak shift after being doped with Dy. The length of nanorods is deceased from 50 to 200 nm for pure CeVO₄ to 50–100 nm for 3% Dy-doped CeVO₄. Photodegradation of MB and RhB by CeVO₄ nanorods under UV light irradiation is improved by Dy-dopant that plays the role in accepting electrons and reducing electron–hole recombination. MB and RhB solutions degraded by 3% Dy-doped CeVO₄ nanorods was 94% and 93% within 80 min, respectively.

采用水热法合成了含有不同重量含量Dy掺杂剂的纯CeVO ₄和掺杂Dy的CeVO ₄纳米棒。在紫外光照射下 80 分钟内评估 Dy 掺杂剂对亚甲蓝 (MB) 和罗丹明 B (RhB) 光降解的影响。通过X射线衍射（XRD）、拉曼光谱、透射电子显微镜（TEM）和紫外-可见光谱对纯CeVO ₄和Dy掺杂的CeVO ₄纳米棒进行表征。在本研究中，CeVO ₄纳米棒掺杂Dy后检测到主峰位移为四方相。纳米棒的长度从纯 CeVO _{4 的}50 到 200 nm 减小到 3% Dy 掺杂的 CeVO _{4 的}50–100 nm. 在紫外光照射下，CeVO ₄纳米棒对 MB 和 RhB 的光降解通过 Dy 掺杂剂得到改善，Dy 掺杂剂在接受电子和减少电子 - 空穴复合方面发挥作用。MB 和 RhB 溶液被 3% Dy 掺杂的 CeVO ₄纳米棒在 80 分钟内降解分别为 94% 和 93%。