双重稀土原子站点具有结合电子结构,用于高效的光催化水分裂
Yanfei Fan1, Ying Liang1, Kang Chen1
1College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China. cuiguanwei@sdnu.edu.cn.
Chemical communications (Cambridge, England)
|November 4, 2025
概括
这项研究在二氧化 (B-TiO2) 上引入了新的稀土双原子位点 (Eu和Ce),用于增强光催化. 这种新材料显著提高了淡水和海水中的气生产.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 表面化学 表面化学
背景情况:
- 表面活性点对于半导体光催化性能至关重要.
- 开发高效的光催化剂对于可持续的能源解决方案至关重要.
研究的目的:
- 在B-doped TiO2.2上构建双重稀土金属原子活性站点 (Eu和Ce).
- 为了研究进化的新材料的光催化性能.
主要方法:
- 原子封闭策略是在B-doped TiO2.2上创建 Eu 和 Ce 双重稀土原子活动场所.
- 实验性表征和密度函数理论 (DFT) 计算.
- 在淡水和海水中测量进化速率和明显量子产量 (AQY).
主要成果:
- CeEu-BTO光催化剂实现了高演化率:558.6 μmol g−1 h−1 (淡水) 和232.7 μmol g−1 h−1 (海水).
- AQY达到了22.17% (淡水) 和5.07% (海水).
- 桥 Ce 和 Eu 原子活性位点 (Ce-B-Eu) 被确定为增强活性的关键,改善光吸收,载体分离和 H+ 减少.
结论:
- CeEu-BTO材料显示出对进化的卓越光催化活性.
- 桥 Ce-Eu 原子活性站点在提高性能方面发挥着至关重要的作用.
- 这项工作提出了设计高效的稀土金属合半导体光催化剂的新策略.
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