Abstract Stable Ti3+-doped TiO2 photocatalytic membrane (PM) was fabricated though a green and facile combination of hydrothermal reaction and low-temperature vacuum-activation. Structural characterizations have confirmed that rose petal-like anatase/rutile nano-branches were uniformly anchored on TiO2 nanofibrous trunk. A unique internal structure has been proved that Ti3+ sites and oxygen vacancies located in the hollow mesopores existed in the bulk of nano-branches. This PM exhibited highly enhanced vis-responsive photoactivity towards tetracycline mineralization, and anti-fouling ability. The improved performance was mainly contributed by the high concentration stable Ti3+ centers, providing the PM with more active species and long-term lifespan. Due to the unique branched structure, this dense interweaved PM was also capable of efficient emulsion separation. It is believed that the multi-functional PM reveals a promising direction toward organic and oil-containing wastewater treatment.

中文翻译：

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构建稳定的 Ti3+-TiO2 光催化膜以增强光活性和乳液分离

摘要 通过绿色、简便的水热反应和低温真空活化相结合，制备了稳定的 Ti3+掺杂的 TiO2 光催化膜（PM）。结构表征证实，玫瑰花瓣状锐钛矿/金红石纳米分支均匀地固定在 TiO2 纳米纤维主干上。一种独特的内部结构已被证明，位于中空介孔中的Ti3+位点和氧空位存在于大部分纳米分支中。该 PM 对四环素矿化表现出高度增强的可见光响应光活性和抗污染能力。性能的提高主要归功于高浓度稳定的 Ti3+ 中心，为 PM 提供了更多的活性物质和更长的寿命。由于独特的分支结构，这种密集交织的 PM 还能够有效地分离乳液。相信多功能PM揭示了有机和含油废水处理的有希望的方向。