制备离子液体改性石墨烯复合物及其在水溶液中的 (V) 吸附机制

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Yingli Li^1,2, Keyi Xiang^1,2, Guangfei Qu^3,4

¹Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, No. 727, Jingming South Road, Chenggong District, Kunming, 650500, Yunnan, China.

Environmental science and pollution research international

|February 4, 2024

概括

离子液体改性石墨烯 (H/GR) 有效地从水中去除99.4%的. 这种先进的吸附剂显示出高容量,使其成为对污染的有希望的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学化学化学

背景情况:

石墨烯 (GR) 具有出色的性能,但其应用范围需要扩大.
对石墨烯的修改对于提高其在环境修复中的性能至关重要.
水溶液中的污染对环境和健康构成重大风险.

研究的目的:

制备离子液体改性石墨烯复合材料 (H/GR) 用于去除.
研究吸附机制并优化从水溶液中去除的条件.
评估新型H/GR吸附剂的吸附能力和性能.

主要方法:

使用离子液体进行石墨烯修饰[Hmim]SbF6.6.
吸附参数的优化:温度,时间,pH值,吸附剂剂量和湿酸度.
使用SEM,EDS,BET,FT-IR和XPS进行H/GR的表征.
使用兰慕尔,弗罗恩德利希和金模型进行吸附异热模型建模.

主要成果:

在优化条件下,最大去除率为99.4%.
兰穆尔模型最好地描述了吸附,最大容量为137.95mg·g-1,超过了现有的吸附剂.
鉴定证实了成功的离子液体固定,透度增加和离子的化学结合.

结论:

离子液体改性石墨烯 (H/GR) 是一种高效的吸附剂,用于从水中去除.
主要的去除机制包括静电吸附,离子交换和复杂化.
提高H/GR的多孔性和表面化学作用,有助于其优越的吸附性能.

关键词:

吸附方式吸附方式吸附方式作为 (((V) 的石墨烯是一种石墨烯.离子液体是一种离子液体.纳米复合材料的使用方法

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