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酸/UiO-66-NH₂ 纳米复合物用于酸盐去除

Xiaohang Lin¹, Yuzhu Xiong¹, Fuping Dong¹

¹Department of Polymer Materials and Engineering, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China.

Nanomaterials (Basel, Switzerland)

|July 26, 2024

概括

一种新的复合水凝,酸盐/用聚乙烯胺 (UiO-66-NH2/SA@PEI) 修改的UiO-66-NH2),有效地从水中去除酸盐. 这种材料在环境应用中表现出高吸附能力和稳定性.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

污染是一个越来越严重的环境问题,推动了从水中有效去除酸盐的必要性,以对抗肥胖化.
改性金属有机框架 (MOF) 材料,特别是UIO-66-NH2,由于其结构性质,显示出作为吸附剂的潜力.
基于酸盐的复合材料为开发先进的吸附材料提供了一个有希望的矩阵.

研究的目的:

用聚乙烯胺 (UiO-66-NH2/SA@PEI) 修改的一种新型酸盐/UiO-66-NH2复合水凝的合成和特征.
在各种条件下评估UiO-66-NH2/SA@PEI复合物的酸盐吸附性能.
评估开发的用于废水处理的吸附材料的可重复使用性和稳定性.

主要方法:

用聚乙烯胺 (UiO-66-NH2/SA@PEI) 修改的毫米尺寸的酸盐/UiO-66-NH2复合水凝的制备.
使用SEM,FTIR,XRD和BET技术对复合材料进行表征.
进行静态,动态和循环吸附实验,以确定最佳的吸附条件 (pH,温度,剂量,度) 并评估性能.

主要成果:

UiO-66-NH2/SA@PEI复合物表现出极好的酸盐吸附能力,在最佳条件下 (65°C,pH=2) 达到68.75 mg/g.
吸附剂表现出高效率,即使经过五个吸附-脱附周期,也保持了99%的吸附率.
鉴定证实了UiO-66-NH2在酸盐基质中成功集成,并通过PEI进行修饰,增强分离和吸附特性.

结论:

UiO-66-NH2/SA@PEI复合水凝是一种高效和稳定的吸附剂,用于从水环境中去除酸盐.
该材料的设计使其易于分离,并表现出强大的性能,使其适合于实际的废水处理应用.
这项研究强调了改性MOF基复合水凝在解决环境污染方面的潜力.

关键词:

在UiO-66-NH2中.酸盐的去除酸盐的去除有孔的纳米复合材料.甲基酸盐的使用方法

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