油漆污泥衍生活性炭封装与纳米颗粒用于非激进激活过氧化硫酸盐
Chaofa Chen1, Juan Wang2, Zhixing Wang1
1College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China.
Journal of colloid and interface science
|December 16, 2023
概括
回收的油漆污泥活性炭与纳米颗粒有效降解四环素化物使用过氧硫酸盐. 这种可持续的催化剂为环境修复提供了高效率和稳定性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 工业固体废物管理对于环境可持续性至关重要.
- 油漆污泥是重要的工业废物流,需要有效的回收方法.
- 从废物中提取的活性炭 (AC) 可以作为可持续的催化剂支持.
研究的目的:
- 用于制造 (Co) 纳米颗粒,封装在油漆污泥衍生的活性碳 (AC) 中.
- 调查Co-AC在降解四环素化物 (TCH) 中对过氧硫酸盐 (PMS) 激活的催化性能.
- 阐明降解机制并评估Co-AC/PMS系统的长期稳定性.
主要方法:
- 合成纳米颗粒封装在来自油漆污泥的AC中.
- 在导电性,磁性和杂质 (TiAlSiO x) 方面对Co-AC的表征.
- 使用Co-AC/PMS进行TCH的降解实验,包括动力学研究和机制研究 (in situ Raman,FTIR,电化学,EPR).
主要成果:
- 与纯AC相比,Co-AC对TCH降解表现出增强的PMS激活,与纯AC相比.
- 使用Co-AC/PMS系统,TCH去除率在5分钟内达到97%,在15分钟内达到99%.
- 表面结合的PMS (PMS*) 和单氧 (1O2) 被确定为主导反应物种,促进有效的污染物氧化.
结论:
- 协同AC作为一个多功能催化剂,利用协同活性位点进行PMS吸附和TiAlSiO x杂质产生氧气空位.
- 同AC/PMS系统在环境修复方面表现出高效率,稳定性和成本效益.
- 这项研究为工业废物回收提供了一种有价值的方法,并开发了对污染物降解的废物衍生催化剂的见解.
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