Abstract Aurivillius-type Bi4.15Nd0.85Ti3FeO15 photocatalysts were synthesized by sol–gel process and employed for the degradation of Rhodamine B (RhB). The Bi4.15Nd0.85Ti3FeO15 exhibited bandgap of 2.13 eV with high photocatalytic activity. About 99% and 86% of RhB were photodegraded within 30 min under simulated sunlight and homemade LED lamp irradiation at the optimized pH = 2.2 of reaction solution. No negligible decline of degradation efficiency was observed after five cycling uses. Scavenger trapping experiments demonstrated that both the O2− and h+ radicals were mainly responsible for the RhB degradation. This work provides an efficient and stable Aurivillius-type photocatalysts for RhB degradation in wastewater.

中文翻译：

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高光催化活性Bi4.15Nd0.85Ti3FeO15光催化剂的简便合成

摘要 采用溶胶-凝胶法合成了Aurivilius型Bi4.15Nd0.85Ti3FeO15光催化剂，用于降解罗丹明B（RhB）。Bi4.15Nd0.85Ti3FeO15 的带隙为 2.13 eV，具有高光催化活性。在优化的反应溶液 pH = 2.2 下，在模拟阳光和自制 LED 灯照射下，约 99% 和 86% 的 RhB 在 30 分钟内被光降解。在五次循环使用后，没有观察到降解效率的下降可以忽略不计。清除剂捕获实验表明 O2- 和 h+ 自由基是 RhB 降解的主要原因。这项工作为废水中的 RhB 降解提供了一种高效且稳定的 Aurivilius 型光催化剂。