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用素修饰的金属有机框架作为有效的吸附剂,用于去除甲基色

Chao Wang¹, Chen Xing², Xuezhen Feng¹

¹Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab. for Biomass Chemical Utilization, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Key Lab. of Biomass Energy and Material, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, Jiangsu Province, China.

International journal of biological macromolecules

|August 4, 2023

概括

用素修饰的金属有机框架 (NH2-UIO@L) 有效地从水中去除有机染料. 这种新型吸附剂显示出高容量,出色的可重复使用性,以及对废水处理的潜力.

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:

有机染料带来了严重的环境污染挑战.
从废水中有效地去除这些染料对于环境保护至关重要.
金属有机框架 (MOF) 作为吸附剂具有前景,但修改可以提高其性能.

研究的目的:

为了合成和表征有机染料去除的素改性金属有机框架 (NH2-UIO@L).
研究NH2-UIO@L对MO和MB等染料的吸附能力,效率和机制.
评估NH2-UIO@L在废水处理中的可重复使用性和潜在应用.

主要方法:

用素修饰的金属有机框架的一步合成 (NH2-UIO@L).
使用单一和混合溶液中的MO和MB染料进行吸附实验.
吸附动力学分析,等热体 (朗穆尔,杜比宁-拉杜什基维奇,特姆金) 和相互作用机制 (键,π-π相互作用,静电相互作用).
在多个吸附-脱附周期中评估吸附剂的可重复使用性.

主要成果:

NH2-UIO@L2对MO (214.13毫克·L-1) 和MB (243.31毫克·L-1在混合溶液中) 具有高吸附能力,效率高达99.28%.
吸附机制涉及键,π-π相互作用,静电相互作用和孔隙填充.
吸附剂显示出出色的可重复使用性,在六个周期后保持高吸附效率.
吸附动力学遵循伪二阶模型,表明化学吸附.

结论:

素修饰增强了有机染料中NH2-UIO@L的吸附性质.
NH2-UIO@L表现出卓越的性能和可重复使用性,使其成为实际废水处理的有希望的候选人.
简单的合成和有效的染料去除能力凸显了NH2-UIO@L在环境修复中的潜力.

关键词:

吸附方式吸附方式吸附方式吸附机制是一种吸附机制.用素修饰的金属有机框架.可重复使用性可重复使用性

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