在过沸点环境下,通过并行反应途径通过双原子Ir-N4/Pt-N4催化剂在酸氧化中的突破
Cunpeng Duan1, Jiahui Xiao1, Anuj Kumar2
1State Key Laboratory of Chemical Resources Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, China.
Angewandte Chemie (International ed. in English)
|February 12, 2026
概括
一种具有Ir-N4/Pt-N4位点的新型双原子催化剂通过启用并行反应路径和在高温下削弱键来促进酸氧化. 这一策略显著增强了催化活性和电荷转移,以实现高效的小分子降解.
科学领域:
- 不同质的催化剂.
- 材料科学是一种材料科学.
- 电化学 电化学 电化学
背景情况:
- 单原子催化剂 (SAC) 由于简单的活性位点和缓慢的反应路径,在多原子分子氧化方面面临挑战.
- 现有的催化剂表现出缓慢的溶解电荷转移,限制了复杂氧化反应的效率.
研究的目的:
- 开发一种高效的双原子催化剂 (Ir1-Pt1 NC),具有Ir-N4/Pt-N4活性位点,用于增强酸氧化 (FAOR).
- 调查双通道机制和过沸点环境对催化性能的影响.
主要方法:
- 合成原子分散的Ir-N4 / Pt-N4双隔离的协调结构.
- 在过沸点条件下进行电催化试验.
- 分子动力学 (MD) 模拟来分析结和分子扩散.
主要成果:
- Ir1-Pt1 NC催化剂的质量活性为125.9A mg-1,显著超过了最先进的SAC和商业的Ir/C.
- 建立了一个并行的双通路机制,其中Pt激活H吸附和Ir结合碳基.
- 过沸点的操作有效地削弱了酸溶液中的键,增强了分子扩散和催化动力学.
结论:
- "过沸点脱离键的双原子催化剂"战略为催化剂设计和环境监管提供了一个新的范式.
- 这种方法为FAOR实现了前所未有的催化性能,并有望降解其他小型有机分子.
- 该研究强调了高级催化剂的普遍"结构+环境"双重监管策略.
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