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使用有效的磁性碳基纳米复合材料从水性介质中去除有毒的Cr(VI)

Ferda Civan Çavuşoğlu¹, Gülsüm Özçelik¹, Şahika Sena Bayazit²

¹Department of Chemical Engineering, Faculty of Engineering and Architecture, İstanbul Beykent University, İstanbul, Turkiye.

Turkish journal of chemistry

|March 28, 2024

概括

基于磁修改石墨烯纳米板块 (GNP) 的纳米复合材料有效地从水中去除有毒六价 (Cr(VI)). 吸附能力随着更高的GNP含量而增加,显示出对环境修复的希望.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

六价 (Cr(VI)) 是一种有毒的重金属污染物,需要从水环境中去除.
基于Fe3O4的纳米复合材料提供了重金属修复的潜力.
石墨烯纳米板块 (GNP) 可以增强吸附性质.

研究的目的:

研究使用磁修改Fe3O4基石墨烯纳米板块 (GNP) 纳米复合材料从水溶液中去除Cr(VI).
描述合成的纳米复合材料,并评估各种参数对Cr(VI) 吸附的影响.
为了确定吸附机制和最大吸附能力.

主要方法:

使用了批量吸附技术.
基于GNP的磁修改纳米复合材料进行了合成和表征 (FTIR,XRD,SEM,BET,TGA).
吸附实验进行了不同的吸附剂剂量,接触时间,初始Cr (VI) 度,pH和共存的离子.

主要成果:

吸附过程遵循伪二阶动力学和弗洛伊德利希等温模型.
在pH值约为5.0时,获得了最佳的Cr (VI) 去除.
最大吸附能力为12.71 mg/g (Fe3O4),27.03 mg/g (Fe:GNP 2:1) 和62.27 mg/g (Fe:GNP 1:1) 在298 K,这表明具有更高GNP含量的能力增加.

结论:

磁修改的GNP基吸附剂对Cr (VI) 去除是有效的.
通过增加复合物中GNP的比例来提高吸附剂的性能.
这些纳米复合材料显示出从受污染的水源中得到的Cr (VI) 的修复具有重大潜力.

关键词:

吸附方式吸附方式吸附方式碳纳米复合材料碳纳米复合材料石墨烯纳米板小小的六价的六价是一种磁吸附剂是一种磁吸附剂.

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