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光诱导的贵金属纳米颗粒的激素介导原子分散

Xiang Chen¹, Qingfei Zhao¹, Jingyuan Zhang¹

¹MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, China.

Nature communications

|March 15, 2026

概括

一种新的光诱导方法在环境条件下将贵金属纳米粒子分散成单个原子. 这种方法增强了催化活性,并为催化剂再生和利用提供了可持续的解决方案.

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:

实现原子分散催化剂对于最大限度地利用金属和振兴老化的催化剂至关重要.
传统的纳米粒子分散方法往往涉及恶劣的条件,如高温或复杂的化学处理.

研究的目的:

开发一种新的,温和的战略,用于贵金属纳米颗粒的原子分散.
研究光诱导原子分散的机制及其对各种贵金属和支物的适用性.

主要方法:

在环境条件下利用光诱导的原子分散策略.
采用实验技术和密度函数理论 (DFT) 计算来阐明反应机制.
研究了基 (•Cl) 和超氧化基 (•O2-) 在促进金属-金属键裂变中的作用.

主要成果:

在TiO2支上成功实现了 (Pd) 纳米颗粒的原子分散到单原子Pd1-N2O1结构.
证明了该方法在不同贵金属 (Pd,Pt,Rh) 和氧化物支物 (TiO2,WO3) 中的多功能性.
观察到显著的催化活性增强,商业和废弃Pd/C催化剂在 styrene化中增加了17.8倍和26倍.

结论:

光诱导策略为生产单原子催化剂提供了一个高效,绿色和可持续的途径.
这种方法有效地再生和提高新鲜和废弃的贵金属催化剂的性能.
这些发现为先进的催化技术铺平了道路,改善了金属利用和环境效益.

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