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通过精确定制的Ag-Pt双原子协同作用扩大原子H*生产:在6PPD中发挥关键作用净化净化水的排毒

Yue Xie^1,2, Chao Zhang^1,2,3, Luming Wei^1,2

¹Guangdong Provincial Engineering Research Center of Intelligent Low-carbon Pollution Prevention and Digital Technology & Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou 510006, P. R. China.

Environmental science & technology

|March 2, 2026

概括

新的Ag-Pt双原子催化剂通过在可见光下产生原子H*来排毒6PPD,防止有毒6PPD-Q的形成并增强基激素的激活,以确保更安全的水生环境.

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:

1,3-二甲基 (N3-Dimethylbutyl) -N'--p-phenylenediamine (6PPD) 是一种与轮胎相关的化学物质,通过氧化形成有毒的6PPD- (6PPD-Q).
6PPD-Q对水生生态系统和潜在的人类健康构成重大风险.

研究的目的:

开发一种有效的6PPD排毒方法.
为了阐明催化剂驱动的6PPD降解的机制.
为了防止有毒副产品的形成,如6PPD-Q.

主要方法:

Ag-Pt双原子催化剂 (DAC) 的设计和合成.
利用可见光诱导的界面电荷转移进行增强的原子H*生成.
通过化和基激素激活来研究6PPD排毒的芬顿式过程.
中间识别和生态毒性评估.

主要成果:

Ag-Pt DAC有效地利用可见光产生原子H*通过从Ag到Pt的电子转移.
原子H*启动了一个类似芬顿的过程,选择性地产生基基 (•OH) 用于6PPD排毒.
该过程实现了环的直接化,终止了6PPD-Q的形成.
完全的6PPD解毒得到证实,没有6PPD-Q的积累,生态毒性减少.

结论:

在可见光下,Ag-Pt DAC提供了一种新的,无污染的6PPD排毒方法.
该研究提供了对DAC增强原子H*生成及其在先进氧化过程中的作用的机械洞察.
这种催化系统显示了减轻与6PPD污染相关的环境风险的潜力.

关键词:

6PPDD是什么意思这是一个类似芬顿的工艺.原子 H* 的原子 H* 的原子.双原子催化剂的使用方法光催化作用的光催化作用选择性的 •OH 生产

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