对氧化晶体结构和光催化活性胺兴奋剂的影响
Dina A Tolan1,2, Ayman K El-Sawaf1,2, Islam G Alhindawy3
1Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia.
RSC advances
|August 25, 2023
概括
石兴奋剂显著提高了二氧化 (TiO2) 的光催化效率,用于甲基色降解. 双化TiO2实现了98.21%的降解,性能优于纯TiO2.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 提高二氧化 (TiO2) 的光催化效率对于环境修复至关重要.
- 用金属或非金属合TiO2是提高其性能的一个关键策略.
- 了解比斯 (Bi) 等特定辅助剂的影响,对于开发先进的光催化剂至关重要.
研究的目的:
- 通过一阶段的热水法,合成和鉴定胺合的TiO2 (Bi2O3@TiO2).
- 为了评估Bi2O3@TiO2在可见光下降解甲基色 (MO) 的光催化活性.
- 为了研究Bi doping对TiO2.2的结构,光学和表面特性的影响.
主要方法:
- 通过一阶段的热水法合成双化TiO2.
- 使用X射线衍射 (XRD),FTIR,XPS,FESEM和UV视光谱学进行表征.
- 使用甲基色作为模型污染物的光催化降解实验.
主要成果:
- 双化TiO2保留了解剖酶阶段,增加了特定表面积.
- XPS证实了Ti4+和Ti3+状态的存在,表明成功的Bi-doping.
- 对于MO,Bi2O3@TiO2的光催化降解效率为98.21%,明显高于纯TiO2 (42%).
- 生物兴奋剂改变了TiO2的带隙,增强了可见光吸收和光催化活性.
结论:
- 石兴奋剂是一种有效的策略,可以增强TiO2.2的光催化性能.
- 在可见光下,Bi2O3@TiO2在降解甲基色方面表现出卓越的效率.
- 增强的活性归因于表面积的增加和可见光吸收的改善,这是由于中间能量水平的形成造成的.
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