联吡啶类金属配位聚合物对水中亚甲基蓝的吸附效果分析
Analysis of the adsorption effect of pyridine based metal coordination polymers on methylene blue in water
朱莉娜 1王鑫 1沈广志 1由丽梅1
作者信息
摘要
联吡啶类金属有机框架(MOFs)由于其独特的化学结构和功能特性,在吸附领域表现出卓越性能.这些材料通过不同的有机配体和金属中心的组合,可以实现孔径和功能性的精确调控,特别适用于针对性污染物的选择性吸附.实验中发现,MOFs对亚甲基蓝染料具有高效的吸附能力,其比表面积可达4000平方米/克,最大吸附容量为500毫克/克.通过控制实验条件,如pH值和温度,可以进一步优化吸附性能.此外,离子强度和染料初始浓度也对吸附过程有显著影响,高离子强度可能通过电荷屏蔽或竞争机制干扰吸附过程.
Abstract
Bipyridine-based metal-organic frameworks(MOFs)exhibit exceptional performance in adsorption due to their unique chemical structures and functional characteristics.These materials allow precise control of pore size and functionality through various combinations of organic ligands and metal centers,making them particularly suitable for selective adsorption of target pollutants.Experiments have shown that MOFs possess highly efficient adsorption capabilities for methylene blue dye,achieving a surface area of up to 4000 square meters per gram and a maximum adsorption capacity of 500 milligrams per gram.The adsorption performance can be further optimized by controlling experimental conditions such as pH value and temperature.Additionally,ion strength and initial dye concentration significantly impact the adsorption process,where high ion strength may interfere with adsorption through charge shielding or competitive mechanisms.
关键词
联吡啶类MOFs/亚甲基蓝/比表面积/离子强度Key words
Bipyridine based MOFs/methylene blue/specific surface area/ion strength引用本文复制引用
基金项目
黑龙江省省属高等学校基本科研项目(2020-KYYWF-0808)
出版年
2024
NETL
NSTL
万方数据