Academy of Art & Design, Nanchang Institute of Technology, Nanchang 330044, China.
College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China.
Molecules. 2023 Jan 16;28(2):882. doi: 10.3390/molecules28020882.
Photocatalysis is a hopeful technology to solve various environmental problems, but it is still a technical task to produce large-scale photocatalysts in a simple and sustainable way. Here, nano-flower β-BiO/TiO composites were prepared via a facile solvothermal method, and the photocatalytic performances of β-BiO/TiO composites with different Bi/Ti molar ratios were studied. The nano-flower BiO/TiO composites were studied by SEM, XRD, XPS, BET, and PL. The PL result proved that the construction of staggered heterojunction enhanced the separation efficiency of carriers. The degradation RhB was applied to study the photocatalytic performances of prepared materials. The results showed that the degradation efficiency of RhB increased from 61.2% to 99.6% when the molar ratio of Bi/Ti was 2.1%. It is a mesoporous approach to enhance photocatalytic properties by forming heterojunction in BiO/TiO composites, which increases the separation efficiency of the generated carriers and improves photocatalytic properties. The photoactivity of the BiO/TiO has no evident changes after the fifth recovery, indicating that the BiO/TiO composite has distinguished stability.
光催化是解决各种环境问题的一种有前途的技术，但以简单可持续的方式大规模生产光催化剂仍然是一项技术任务。在这里，通过简便的溶剂热法制备了纳米花β-BiO/TiO 复合材料，并研究了不同 Bi/Ti 摩尔比的β-BiO/TiO 复合材料的光催化性能。通过 SEM、XRD、XPS、BET 和 PL 对纳米花 BiO/TiO 复合材料进行了研究。PL 结果证明了构建交错异质结提高了载流子的分离效率。降解 RhB 被应用于研究制备材料的光催化性能。结果表明，当 Bi/Ti 摩尔比为 2.1 时，RhB 的降解效率从 61.2%提高到 99.6%。通过在 BiO/TiO 复合材料中形成异质结来提高光催化性能是一种介孔方法，这增加了生成载体的分离效率并改善了光催化性能。BiO/TiO 的光活性在第五次回收后没有明显变化，表明 BiO/TiO 复合材料具有出色的稳定性。
