不同的金属合的NiO纳米颗粒用于通过阳光介导的低密度聚乙烯微塑料薄膜的降解
Jameel Mohammed Musthafa1, Badal Kumar Mandal2
1Trace Elements Speciation Research Laboratory, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
概括
氧化物纳米颗粒在阳光下有效降解低密度聚乙烯微塑料. 用铁添加氧化物显示显著降解,为塑料废物污染提供了一个有希望的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术纳米技术
背景情况:
- 塑料废物,特别是低密度聚乙烯 (LDPE) 微塑料 (MP),由于广泛使用和不当处置,造成了严重的环境威胁.
- 迫切需要有效和实用的方法来消除环境中的塑料废物.
研究的目的:
- 使用sol-gel技术合成金属氧化物 (DMD-NiO) 纳米粒子 (NP).
- 用这些合成的NP在阳光下研究LDPEMP膜的光催化降解.
- 评估不同的DMD-NiONP在降解LDPE薄膜中的效率.
主要方法:
- 对于DMD-NiONP的Sol-gel合成.
- 使用FT-IR,UV-vis DRS,XRD,XPS,HR-TEM,SEM-EDX和TGA进行合成材料的表征.
- 在DMD-NiO NPs的存在下暴露在阳光下的LDPE MP薄膜的光催化降解实验.
主要成果:
- 与纯LDPE和未使用的NiO相比,DMD-NiONP对LDPE降解表现出增强的光催化活性.
- 在可见光下30天内,铁添加氧化物 (Fe-NiO) NP显示出显著的LDPE降解 (38.16%).
- FT-IR分析证实了碳基的形成,并且在Fe-NiO-LDPE纳米复合材料中观察到晶度和碳基指数的下降.
结论:
- 由于光学吸收增加和抑制的电荷载体重组,DMD-NiO NPs是LDPE MP降解的有效光催化剂.
- sol-gel技术为开发环保光催化剂提供了可行的途径,以打击MP污染.
- Fe-NiO NPs对LDPE微塑料的高效太阳能驱动降解特别有希望.
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