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一种新的多层多孔Fe,Cu双载生物炭异质催化剂,用于引导非自由基通路的过氧硫酸盐激活

Weidong Shang¹, Lei Wang¹, Zhijie Chen²

¹Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, College of Safety and Environment Engineering, Shandong University of Science and Technology, Qingdao 266590, China.

Journal of colloid and interface science

|March 12, 2025

概括

这项研究开发了一种用于高级氧化过程 (AOPs) 的新型铜铁生物炭催化剂. 工程催化剂通过单片氧有效地去除四环素 (TC),为净化水提供了有前途的解决方案.

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:

增强催化剂活性位点对于高级氧化过程 (AOP) 中的污染物去除至关重要.
来自猪的生物炭为催化剂开发提供了一个可持续的平台.
高效地激活过氧硫酸盐 (PMS) 是产生可用于污染物降解的活性物种的关键.

研究的目的:

开发一种新的双金属载荷生物炭催化剂,以有效地去除AOP中的污染物.
研究催化剂结构和成分在激活PMS和产生活性物种中的作用.
阐明降解机制,特别是非激素途径的贡献.

主要方法:

使用 cetyltrimethylammonium bromide (CTAB) 和 SiO2 模板进行了猪生物炭的修改.
铜和铁离子被加载到生物炭中,以创建一个分层的多孔催化剂 (CFBC-0.5/1).
进行了催化剂表征,四环素 (TC) 降解实验,火研究,EPR和电化学试验.

主要成果:

准备好的CFBC-0.5/1催化剂表现出一个分层的多孔结构,具有增强的缺陷程度和碳酸含量.
催化剂在各种条件下实现了90%以上的四环素 (TC) 清除.
单一氧气 (1O2) 被确定为主要活性物种,表明非激进降解途径.
催化剂和PMS之间的增强电子转移显著促进了PMS激活.

结论:

设计的双金属加载生物炭催化剂在AOP中表现出高效的TC去除效率.
层层的多孔结构和Cu-Fe活性位点通过单片氧生成有效地激活PMS.
这项研究强调了基于生物炭的催化剂在环境修复中有针对性的激活非激进途径的潜力.

关键词:

生物炭是一种生物炭.电子转移是指电子的转移.有层层的多孔性过氧单硫酸盐的使用污染物的降解降解污染物.单一氧气的氧气是单一的

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