一种基于Co的酸的素碳催化剂,具有高稳定性和广泛的操作窗口,用于快速降解抗生素
Zhicheng Luo1, Weidong Wu1, Bowen Liu1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, PR China.
International journal of biological macromolecules
|August 31, 2023
概括
这项研究引入了一种新型的基于Co的催化剂,该催化剂来自修改后的木质素,有效地防止纳米粒子聚合和金属出. 催化剂使用氧硫酸盐有效降解四环环素,显示出增强的稳定性和环境应用潜力.
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:
- 基于的催化剂对于激活多氧硫酸盐 (PMS) 来降解污染物至关重要.
- 挑战包括纳米粒子聚合和浸出,限制实际使用.
研究的目的:
- 为了有效降解污染物,从修饰的木质素中合成一种稳定且高度活性的基于Co的催化剂 (Co-N/C@CL).
- 为解决纳米粒子聚合和泄漏在基于Co的PMS激活系统中的问题.
主要方法:
- 在性木质素上植入碳素甲基组,以产生碳素甲基化木质素 (CL).
- 合成 Co-N/C@CL 催化剂使用 CL 进行稳定的 Co2+ 复合.
- 通过PMS激活评估四环素 (TC) 降解的催化剂性能.
- 使用DFT计算来阐明降解机制.
主要成果:
- Co-N/C@CL表现出高表面积 (521.8 m2·g-1) 和均的Co纳米粒子分布.
- 该Co-N/C@CL/PMS系统在2分钟内完成了20ppmTC的完全去除,速度很高 (2.404分钟-1).
- 协同效应促进了1O2,OH和SO4的形成,其中1O2占主导地位;观察到出色的稳定性和较低的CO2+泄漏.
结论:
- 开发的Co-N/C@CL催化剂为基于PMS的污染物降解提供了稳定有效的解决方案.
- 这项工作提出了一个可行的策略,用于创建先进的基于Co的碳材料,用于环境修复.
- 催化剂显示出有效去除四环素和其他有机污染物的巨大潜力.
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