石油化工高等学校学报2026，Vol.39Issue(3)：39-47,9.DOI:10.12422/j.issn.1006-396X.2026.03.005
共价有机骨架材料COF-TpPa-1对水中染料的吸附研究
Adsorption Properties of Dyes from Aqueous Solutions by Covalent Organic Frameworks COF-TpPa-1
摘要
Abstract
Covalent organic frameworks(COFs)are a class of crystalline porous polymers formed by linking several light elements through covalent bonds.They feature large specific surface area,excellent chemical stability,and precisely tunable pore architecture,rendering them highly promising for adsorption applications.In this work,COF-TpPa-1 demonstrated effective performance as an adsorbent for the removal of two representative organic dyes(methyl green and congo red)from aqueous solutions.Comprehensive investigations were performed to analyze the effects of various factors while examining adsorption isotherms,kinetics,and thermodynamics.The results demonstrated that the adsorption of both methyl green and congo red onto COF-TpPa-1 followed the Langmuir isothermal adsorption model,indicating a predominant monolayer adsorption mechanism.Kinetic studies showed excellent accordance with the pseudo-second-order model,indicating chemisorption as the primary adsorption mechanism.The adsorption processes of COF-TpPa-1 for both dyes were endothermic and thermodynamically spontaneous.Remarkable maximum adsorption capacities of 253.17 mg/g for methyl green and 166.39 mg/g for congo red were achieved at 313 K.Furthermore,ethanol treatment enabled efficient dye desorption and adsorbent regeneration.关键词
共价有机骨架材料/刚果红/甲基绿/吸附动力学/吸附热力学Key words
Covalent organic frameworks/Congo red/Methyl green/Kinetics/Thermodynamics分类
化学化工引用本文复制引用
夏阳,刘宁宁..共价有机骨架材料COF-TpPa-1对水中染料的吸附研究[J].石油化工高等学校学报,2026,39(3):39-47,9.基金项目
辽宁省教育厅项目(L2020012). （L2020012）
