有效的光催化生产通过单原子Pt定气结合有机框架
Shilong Zhong1, Haixian Shi2, Chengwei Xiao3
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Laboratory of Chemistry and Chemical Engineering Jieyang Center, Jieyang 515200, China.
Journal of colloid and interface science
|October 23, 2024
概括
我们开发了高度稳定的单原子催化剂 (SACs),使用以基为基础的与结合的有机框架 (PFC-1),以实现高效的光催化进化. PFC-1@Pt催化剂表现出极好的性能和耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 纳米技术纳米技术
背景情况:
- 在有机多孔框架上的单原子催化剂 (SAC) 为高效的进化提供了潜力.
- 在制造具有精确定金属原子的稳定SAC方面存在挑战.
研究的目的:
- 开发一种系统的方法来制造稳定和活跃的单原子催化剂,使用结有机框架 (HOF).
- 为了研究单个原子的表现,定在基于pyrene的HOFs上,用于光催化进化.
主要方法:
- 合成基于的HOFs (PFC-1) 使用通过自组装的1,3,6,8-tetra (p-甲基酸) 联体.
- 制造的SAC (PFC-1@Pt) 通过沉积 (Pt) 在PFC-1上使用液相光还原.
- 描述了 PFC-1 上单个 Pt 原子的结构和结合.
主要成果:
- 已确认单原子 Pt 通过 PtC 和 PtO 协调键在 PFC-1 内定.
- 证明Pt单个原子作为有效的电子捕获和分离中心,抑制重组.
- 通过PFC-1@Pt.实现了2202.5μmol g-1h-1的高进化率.
- 展示了出色的光催化稳定性,维持了40多小时的活动.
结论:
- 开发了一种基于HOFs的高效和稳定的单原子催化剂 (PFC-1@Pt).
- 单个Pt原子通过改善电荷分离,显著增强光催化进化.
- 这项工作扩大了HOF在先进光催化剂中的应用.
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