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1,2,4-三二二烯的增强降解由Pd载荷生物炭支持的nZVI:通过还原-氧化合过程

Wenxuan Luo¹, Chenghua Xu², Chao Wang³

¹Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China.

Journal of environmental management

|September 13, 2025

概括

这项研究引入了一种新的Pd载生物炭支持的纳米零价值铁 (Pd-nZVI/BC) 材料,用于在水中降解1,2,4-TCB. 结合的还原氧化过程有效地矿化污染物,减少与传统的先进氧化过程相比有毒的副产品.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

使用过氧化 (H2O2) 的高级氧化工艺 (AOP) 是地下水污染物降解的常见方法.
传统的AOP和脱方法可以产生有害的副产品.
1,2,4-三乙 (1,2,4-TCB) 是一种持久性有机污染物,需要有效的去除策略.

研究的目的:

为了合成和评估一种新的pd载荷生物炭支持的纳米零价值铁 (pd-nZVI/BC) 材料.
通过结合的还原氧化过程,研究1,2,4-TCB的降解和矿化.
将效率和副产品形成与传统的AOPs进行比较.

主要方法:

合成Pd-nZVI/BC纳米复合材料的材料.
在1,2,4-TCB降解过程中采用合的还原-氧化过程.
在机械学研究中利用了激素扫除,循环电量测量 (CV),电子自旋共振 (ESR),密度函数理论 (DFT) 和气色谱-质谱 (GC-MS).

主要成果:

该Pd-nZVI/BC材料有效降解1,2,4-TCB通过减少在12小时内,随后氧化在3.5小时内.
结合过程实现了比AOPs高1.51倍的脱效率,大大减少了化副产品.
原子 (H*) 和基 (·OH) 分别被确定为减少和氧化阶段的关键反应物种.

结论:

新型Pd-nZVI/BC材料和相应的还原氧化工艺为完全去除和矿化1,2,4-TCB提供了一种高度有效的方法.
与传统的AOP相比,这种方法可以显著减少有毒副产品的产生.
该研究提供了对1,2,4-TCB的降解途径的机械洞察,包括脱,环开放和矿化.

关键词:

双金属催化剂是一种催化剂.含的碳化合物含的碳化合物脱化过程中的脱.降解机制的降解机制地下水的整治,就是地下水的整治.

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