有效的甲二烯降解由煤基基催化材料用于过氧硫酸盐激活
Chunquan Li1, Shuaijun Yin1, Yutong Yan1
1School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China.
Journal of environmental management
|December 4, 2023
概括
来自煤炭的新型催化剂在水和土壤中有效降解甲 (Bap). 这种绿色催化剂,CG-Ca-N,显示出出色的可重复使用性,并为环境修复提供了希望.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
背景情况:
- 像甲 (Bap) 这样的有机污染物对环境构成重大风险.
- 对于受污染的水和土壤,有效和可持续的整治策略至关重要.
研究的目的:
- 开发一种低成本的绿色催化剂,用于过氧硫酸盐 (PMS) 激活.
- 为了评估催化剂在从水和土壤矩阵中去除甲 (Bap) 的效率.
主要方法:
- 使用煤炭,化和胺合成CG-Ca-N催化剂.
- 在水溶液和土壤泥中测试Bap去除效率.
- 在不同的pH值下和在常见离子的存在下研究催化剂性能.
- 利用电子磁共振 (EPR) 和激素清除来识别活跃物种.
主要成果:
- 在20分钟内,CG-Ca-N在水溶液中实现了100%的Bap去除,在60分钟内在土壤泥中达到72.06%.
- 催化剂在三个循环中显示出出色的可重复使用性.
- 巴普的去除依赖于pH值 (pH值在9以上受到抑制),对二碳酸盐和硫酸盐离子敏感.
- 单点氧 (1O2) 被确定为负责Bap降解的主要反应性氧物种.
结论:
- 开发的CG-Ca-N催化剂为PMS激活提供了具有成本效益和环保的方法.
- 这种催化剂显示出在地下水和土壤中有机污染物的修复方面具有重大潜力.
- 这些发现为设计用于环境应用的绿色催化剂提供了新的视角.
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