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Updated: Sep 14, 2025

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在单原子合金催化剂中,半共价相互作用诱导的电子转移增强单原子氧生成,以有效地去除污染物

Yi Shen^1,2,3, Wanting Hua^1,2, Chao Zhu^1,2

¹Zhejiang Key Laboratory of Low-carbon Control Technology for Industrial Pollution, College of Environment, Zhejiang University of Technology, Hangzhou, 310032, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|July 21, 2025

概括

单原子合金催化剂有效地激活过氧硫酸盐 (PMS) 来产生单片氧 (O2) 用于控制水污染. 用铜添加剂的催化剂显示了最高的活动,为设计先进的催化剂提供了洞察力.

科学领域:

环境化学环境化学
催化剂是一种催化剂.
材料科学材料科学材料科学

背景情况:

氧硫酸盐 (PMS) 激活单片氧 (¹O₂) 生成是可持续水处理的关键.
单原子合金催化剂 (SAAC) 为催化应用提供了独特的特性.
单原子兴奋剂对SAACs PMS激活的影响在很大程度上仍未被探索.

研究的目的:

为了合成和表征SAACs (M-Co₃O₄/C) 与不同的金属剂 (M = Mn, Fe, Cu, Ni).
评估这些SAACs在PMS激活中对双A (BPA) 降解的催化性能.
阐明增强催化活性和单一氧气生成的潜在机制.

主要方法:

合成M-Co₃O₄/C催化剂通过在Co₃O₄/C支上金属原子的原子分散.
对PMS自我分解和BPA降解的催化活性测试.
实验和计算研究 (例如,DFT) 来分析电子结构和反应路径.

主要成果:

M-Co₃O₄/C催化剂在选择性O₂生成的PMS激活中表现出显著的活性.
Cu-Co₃O₄/C显示了最高的催化效率,速度常数是未使用的Co₃O₄/C的4.32倍.
金属-半共价合引发了电子转移,增强了PMS吸附,降低了反应障碍.

结论:

提供了对PMS激活机制的原子级洞察力.
该研究指导了先进的SAAC设计,以有效降解污染物.
SAAC 是一个有前途的战略,用于开发有效的水资源整治技术.

关键词:

新兴有机污染物新生有机污染物过氧单硫酸盐的激活方式半共价相互作用半共价相互作用一个单一的氧气.一个原子合金催化剂.

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