无形工程驱动d-轨道高旋转配置几乎100%O2介导的芬顿式反应
Juanjuan Qi1, Qian Bai1, Xiuhui Bai2
1MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|April 26, 2025
概括
无形碳化物支持单个原子,通过过氧硫酸盐激活增强了pazufloxacin的去除. 这种工程催化剂通过优化电子结构以选择性单片氧生成来实现高效率.
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.
- 环境化学环境化学
背景情况:
- 无形材料具有原子失调,创造了不和的位置,非常适合单原子催化剂定.
- 单原子催化剂 (SAC) 在化学反应中提供高效率和选择性.
研究的目的:
- 在无形碳化物 (Co-ACN) 上通过基板无形化设计孤立的原子的电子结构.
- 通过过氧硫酸盐 (PMS) 激活来研究Co-ACN对巴祖素 (PZF) 降解的催化性能.
- 阐明增强的催化活性和选择性背后的机制.
主要方法:
- 基板无形化工程来创建Co-ACN.
- 对Co-ACN电子结构和协调环境的实验性描述.
- 对PZF降解和理论计算 (DFT) 的动态研究,以了解电子过渡和反应机制.
主要成果:
- 与晶体Co-CCN (Co-N2) 相比,Co-ACN具有更高的协调环境 (Co-N3).
- 形态化工程诱导了从低旋转到高旋转状态的过渡,优化了d带中心.
- 在1分钟内,Co-ACN实现了近100%的选择性单点氧 (1O2) 生产,以快速去除PZF (k1 = 3.504 min-1),与Co-CCN产生混合反应性氧物种 (ROS) 不同.
结论:
- 基质无形化是一种有效的策略,用于调整单原子催化剂的电子结构.
- 在无形碳化物上Co原子的高旋转状态增强了PZF降解的催化活性和选择性.
- 这项工作提出了通过控制原子级电子性质来设计先进的单原子催化剂的新方法.
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