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聚乙烯微塑料的间接日光氧化降解由生物废物改性TiO2基材料₂

Paola Amato¹, Marzia Fantauzzi², Filomena Sannino³

¹Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, I-80125 Naples, Italy.

Journal of hazardous materials

|November 8, 2023

概括

这项研究引入了一种新的化学方法,用于使用混合氧化和树脂材料降解微塑料. 这种可持续的方法在没有外部能量的情况下产生反应性氧物种,有效地分解聚乙烯微塑料.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
聚合物化学聚合物化学

背景情况:

微塑料由于其持久性而构成重大环境威胁.
线性低密度聚乙烯 (LLDPE) 是一种常见的,难以回收的塑料.
目前的微塑料整治方法通常需要大量的能量投入.

研究的目的:

为微塑料降解开发一种创新,节能的化学处理方法.
研究一种用于产生反应性氧物种的新型混合材料.
使用这种可持续的方法来评估LLDPE的退化.

主要方法:

通过sol-gel方法使用氧化和合金合成了一种混合材料.
在合金和Ti4+之间使用了联体到金属的电荷转移复合体.
通过使用气体染色学-质谱学和表面分析分析副产品来评估降解.

主要成果:

混合材料在环境条件下产生超氧化基离子.
在间接日光下,在一个月内观察到LLDPE的显著降解.
聚合物表面的化学和结构修改证实了降解.

结论:

提出的方法为微塑料的氧化降解提供了一种可持续且具有成本效益的策略.
这种方法有效降解LLDPE,而不会产生有毒的副产品.
在混合材料中利用生物废物 () 与废物利用原则保持一致.

关键词:

通过先进的氧化过程.在LLDPE中使用LLDPE.聚合物的降解降解.红粉是什么意思红粉是什么意思二氧化二氧化是什么?二氧化是什么?

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