Novel black oxygen deficient bismuth oxide (Bi₂O₃-Bi₂O_3–x) photocatalytic material was successfully prepared by a two zone temperature controlled muffle furnace method. The lanthanum, cerium and erbium ions are successfully doped into Bi₂O₃-Bi₂O_3–x with the average contents of 10.77 wt%, 7.62 wt% and 8.14 wt%, respectively. The results show that a large number of oxygen vacancies exist in Bi₂O₃-Bi₂O_3–x. La³⁺, Ce³⁺ and Er³⁺ act as electron acceptors to temporarily trap the photo-generated electrons. The XPS spectrum show Bi-O band in Bi₂O₃-Bi₂O_3–x and the O 1s peak of Ce/Bi₂O₃-Bi₂O_3–x move toward the direction of low binding energy. These phenomena fully prove that the separation of photogenerated electron-hole pairs will be more effectual, so as to reduce the possibility of charge carrier recombination. The radical scavenging experiments and electron spin resonance detections confirm that the conduction band of the original Bi₂O₃ can easily receive photogenerated electrons, while the valence band of the modified Bi₂O₃-Bi₂O_3–x tends to accept photogenerated holes and then forms the circulation system. Therefore, Ce/Bi₂O₃-Bi₂O_3–x can degrade tetracycline hydrochloride up to 90.15%. This research provides some new insights into developing green and recyclable photocatalysts for the remediation of antibiotic contamination.

采用两区温控马弗炉法成功制备了新型黑色缺氧氧化铋（Bi ₂ O ₃ -Bi ₂ O _{3 - x ）光催化材料。}镧、铈和铒离子成功掺杂到Bi ₂ O ₃ -Bi ₂ O _{3 - x}中，平均含量分别为10.77 wt%、7.62 wt%和8.14 wt%。_{结果表明，Bi 2} O ₃ -Bi ₂ O _{3 - x}中存在大量氧空位。La ³⁺ , Ce ³⁺Er ³⁺作为电子受体暂时捕获光生电子。XPS光谱显示Bi 2 O 3 -Bi 2 O 3 - x中的Bi-O谱带_{和Ce/Bi 2 O 3} -Bi _{2 O 3 -} x_的O _1s峰_向低结合能方向移动。这些现象充分证明光生电子-空穴对的分离会更有效，从而降低电荷载流子复合的可能性。自由基清除实验和电子自旋共振检测证实了原始Bi ₂ O的导带₃很容易接受光生电子，而修饰后的Bi ₂ O ₃ -Bi ₂ O _{3 - x}的价带倾向于接受光生空穴，进而形成循环系统。因此，Ce/Bi ₂ O ₃ -Bi ₂ O _{3 - x}可降解盐酸四环素达90.15%。这项研究为开发用于修复抗生素污染的绿色和可回收光催化剂提供了一些新的见解。