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乙烯化物的快速降解由绿色生和添加的石墨烯

Qiong Ouyang¹, Dominique J Tobler¹, Jia Deng²

¹Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.

The Science of the total environment

|May 1, 2024

概括

化石墨烯催化绿色,通过解有效降解有毒地下水污染物乙烯化物 (VC). 这种碳增强铁 (II) 系统显示出对污染水源有效修复的希望.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
绿色化学绿色化学

背景情况:

乙烯 (CEs) 污染了地下水,造成了严重的环境和健康风险.
乙烯基化物 (VC) 是最有毒和反复的CE,主要通过解降解.
铁 (II) 材料具有降解脱的潜力,但它们与VC和碳催化剂的有效性需要进一步研究.

研究的目的:

为了研究N-化石墨烯 (NG) 在使用铁(II) 材料的VC的还原性脱中的催化作用.
阐明VC降解的机制,重点关注原子和特定反应场所的贡献.
评估绿色生 (GR) +NG系统在地下水中进行VC整治的性能.

主要方法:

使用一个分层的铁硫酸 (绿色生) 作为减少剂和N-化石墨烯 (NG) 作为催化剂.
进行了批量实验,以监测VC的减少,的形成,并确定活跃的催化站点.
采用循环电压测量和火实验来了解反应机制和的作用.

主要成果:

在336小时内使用5g Fe/L GR和5g/L NG (950°C热解) 将80μM VC完全降解为乙烯.
观测到的伪第一阶动力学速率常数为0.017h-1,表明有效的降解.
剂量实验证实NG是脱的活性阶段,NG促进的原子起着重要作用.

结论:

该GR + NG系统显示了高效率和有希望的潜力,用于修复VC污染的地下水.
该研究强调了NG在通过原子生成催化VC解中的关键作用.
这些发现为未来研究碳催化降解脱利用铁 (II) 降解剂的研究提供了机制参考.

关键词:

催化剂是一种催化剂.化乙烯的使用方法脱化过程中的脱.电子转移是电子的转移.的生产生产的生产.铁 (II) 氧化

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