聚烯微塑料的不同衰老路径:电离辐射诱导含有氧的功能群控制污染物吸附
Chen Lei1, Mao Chengkai1, Wang Jun1
1School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China.
Journal of hazardous materials
|October 12, 2025
概括
马射线辐射有效老化聚烯微塑料,导致大量的质量损失. 这种先进的氧化方法揭示了明显的衰老机制,并增强了微塑料的吸附特性.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 传统的微塑料处理方法不足以了解老化过程.
- 阐明微塑料老化机制对于环境修复至关重要.
研究的目的:
- 调查辐射技术对聚烯微塑料快速和完全老化的有效性.
- 了解氧化能力对微塑料老化机制和功能组转换的影响.
主要方法:
- 利用玛射线和电子束辐射来诱导聚烯微塑料的氧化.
- 在不同辐射条件下分析了功能组的变化和质量损失.
- 确定了碳基团作为衰老和吸附的关键地点.
主要成果:
- 马射线辐射在聚烯微塑料中实现了70.58%的质量损失,表明了强大的降解.
- 观察到不同的衰老路径,受辐射系统氧化能力的影响.
- 马射线优先产生碳基,增强衰老和吸附.
结论:
- 辐射技术为快速的微塑料老化和降解提供了一种有效的方法.
- 衰老过程与含氧功能组的形成和转变密切相关.
- 了解这些机制为管理微塑料污染和吸附提供了基础.
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