Abstract A series of anatase TiO2@MIL-101(Cr) was synthesized using the solvothermal method for photocatalytic degradation of bisphenol A (BPA). The characterization of the composites showed that they had an octahedral shape that was similar to that of MIL-101(Cr), but the particle size was reduced to about 300–500 nm. The amount and surface area of the TiO2 in the composites jointly influenced the photocatalytic degradation; in optimal conditions, 59 % TiO2@MIL-101(Cr) could achieve 99.4 % BPA degradation in 240 min under UV irradiation. This superior photocatalytic performance was the result of the effective separation of electron-hole pairs and a narrow band gap. Moreover, the optimal composite exhibited excellent stability, indicating its suitability for reuse. Reasonable pathways of BPA degradation were proposed based on the detected intermediates during the degradation, where the oxidative radical O2− played a dominant role.

中文翻译：

---

锐钛型TiO2@MIL-101(Cr)纳米复合材料用于光催化降解双酚A

摘要 采用溶剂热法合成了一系列锐钛矿型TiO2@MIL-101(Cr)光催化降解双酚A(BPA)。复合材料的表征表明它们具有类似于 MIL-101(Cr) 的八面体形状，但粒径减小到约 300-500 nm。复合材料中TiO2的量和表面积共同影响光催化降解；在最佳条件下，59 % TiO2@MIL-101(Cr) 在紫外线照射下可在 240 分钟内实现 99.4 % 的 BPA 降解。这种优异的光催化性能是电子-空穴对的有效分离和窄带隙的结果。此外，最佳复合材料表现出优异的稳定性，表明其适合重复使用。