选择性定PtNP在基于共价三酸的框架上通过in situ衍生的桥接联体,以促进光催化进化
Ling-Ling Zheng1,2, Xiang Li2,3, Dengke Wang2
1Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education, School of Resources & Environment Nanchang University, Nanchang 330031, P. R. China. 1250804805@qq.com.
Nanoscale
|February 26, 2024
概括
研究人员开发了一种新的方法,将纳米颗粒在基于共价三的框架上,显著提高了生产效率和光催化中的稳定性.
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
- 纳米技术纳米技术
背景情况:
- 使用含 (Pt) 光催化剂进行高效和稳定的 (H2) 生产是一个重大挑战.
- 开发用于定Pt纳米粒子 (NP) 的新策略对于增强光催化活性至关重要.
研究的目的:
- 开发一种有效的策略,以有选择性和均地将超小的Pt NP在基于共价三酶的框架 (CTF) 光催化剂上.
- 为了提高Pt/CTF材料的光催化H2演化速率和稳定性.
主要方法:
- 在现场导出桥接配体以在CTF光催化剂上定PtNP (∼1.2nm).
- 合成Pt/AT-CTF-1的材料.
- 在可见光照射下测量光催化H2进化速率.
- 照片/化学表征,以研究 Pt NPs 和桥接联体之间的相互作用.
主要成果:
- Pt/AT-CTF-1光催化剂的H2演化率为562.9μmolg-1h-1,明显高于Pt/CTF-1.
- 在现场获得的桥接连体提供了强烈的相互作用,确保了Pt NP的显著稳定性.
- 观察到Pt NP的均固定和更好的电荷载体传输.
结论:
- 开发的策略成功地将超小的Pt NPs通过在位衍生桥接连体在CTF光催化剂上均.
- 桥接配体的协同效应增强了H2进化的稳定性和光催化性能.
- 这项工作为稳定纳米集群和改善光催化材料中的电子转移提供了新的方法.
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