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纳利迪克酸和Fe (II) /Cu (II) 在Goethite和Akaganéite表面的共同吸收

Wei Cheng¹, Jiabin Li¹, Jie Sun¹

¹College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, P. R. China.

Environmental science & technology

|October 5, 2023

概括

铁 (II) 通过形成三元复合物,增强了纳利迪克酸 (一种类抗生素) 在石上的吸附. 这种相互作用对于理解有机污染物在氧-无氧边界的命运至关重要.

科学领域:

环境化学环境化学
地质化学地质化学
表面科学是一门学科.

背景情况:

水性Fe (II) 和固体Fe (III) 氧 () 氧化物之间的相互作用显著影响有机污染物的环境命运.
了解这些相互作用对于预测污染物行为至关重要,特别是在氧-无氧边界.

研究的目的:

为了研究纳利迪克斯酸 (NA) 的吸附,一个氧化还原无活性的昆龙抗生素,在合成戈希特 (α-FeOOH) 和阿卡甘伊特 (β-FeOOH) 上.
阐明水性Fe (II) 和其他 (Cu (II)) 在这些铁氧 (hydr) 氧化物表面上修改NA吸附中的作用.

主要方法:

批量吸附实验. 批量吸附实验.
减弱的总反射率 - 里叶变换红外光谱学 (ATR-FTIR).
表面复杂化建模 (SCM) 和粉末X射线衍射 (PXRD).

主要成果:

Fe (II) 增强了GOETHITE上的NA吸附,这归因于三元复合体的形成,在低负载时没有立即的电子转移.
较高的Fe (II) 负载诱导了戈西特重结晶为磁铁,影响了NA结合.
(II) 也增强了GOETHITE上的NA吸附,但水性复合和沉限制了它对AKAGANEITE的影响.

结论:

三元表面复合物的形成是控制有机污染物在铁氧氧化物上吸附的关键机制.
铁 (Fe) 和其它离子可以通过表面复杂化和矿物转化显著改变污染物的命运.
这些发现对有机污染物的环境行为有直接影响,特别是在具有波动的氧化还原条件的环境中.

关键词:

(II) 的意思是铁 (II) 是一个铁 (Fe) 氧 (Ox) 氧化 (Fe) 氧化 (Fe) 氧化建模建模是什么意思奇诺类抗生素奇诺类抗生素

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