使用GO/Cr-MOF从水溶液中去除莫西弗洛克萨
Fuhua Wei1, Xiang Yu1, Qinhui Ren1
1College of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou 561000, China.
The journal of physical chemistry. A
|September 4, 2024
概括
一种新的石墨烯氧化物 (GO) 和金属有机框架 (Cr-MOF) 复合物有效地去除莫西,达到90.4%的去除率. 这种吸附剂由于其化学吸收机制,具有很高的药物去除应用潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 开发有效的吸附剂来去除制药污染物对于环境保护至关重要.
- 石墨烯氧化物 (GO) 和金属有机框架 (MOF) 是吸附应用的有希望的材料.
- 基于的MOF (Cr-MOF) 为污染物相互作用提供独特的结构性质.
研究的目的:
- 合成和描述一种由石墨烯氧化物和金属有机框架 (GO/Cr-MOFs) 的新型复合材料.
- 为了评估GO/Cr-MOFs复合物的吸附能力,以从水溶液中去除莫西弗洛素.
- 调查吸附动力学,热力学和异热模型,这些模型控制着莫西素吸附过程.
主要方法:
- 使用溶热合成方法制造GO/Cr-MOFs复合物,使用2,5-二基甲酸和酸.
- 材料的表征是使用富里埃变换红外光谱 (FTIR),扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 进行的.
- 进行了吸附实验,以确定莫西弗洛克萨辛的去除效率,容量和温度的影响,随后进行了动力和同温建模 (PSO, Freundlich).
主要成果:
- 该GO/Cr-MOFs复合物已成功合成和表征.
- 该复合物在平衡状态下达到最大的 90.4% 的莫西弗洛克萨辛去除率.
- 在特定条件下,最佳吸附能力为222.25 mg/g (30 mg吸附剂,40 ppm莫西素). 吸附度随着温度的增加而降低.
- 伪二阶动力学和弗洛伊德利希异热模型最好地描述了吸附过程,表明化学吸附.
- 热力学分析显示出一种外热和自发吸附过程.
结论:
- 合成的GO/Cr-MOFs复合物在去除莫西素方面表现出色.
- 化学吸收,由伪二次动力学和弗洛伊德利希等热量控制,是主要的机制.
- 这种材料具有很高的潜力,可用于切除毒品和环境修复的实际应用.
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