摘要
金属-有机框架(MOFs)因其高比表面积和高孔隙率的特殊结构,在染料吸附领域展现出显著优势。采用双咪唑四羧酸有机配体与氯化铟,通过溶剂热法合成了一种新型In-MOF,并考察了其对典型阳离子染料亚甲基蓝(MB)、结晶紫(CV)和阴离子染料甲基橙(MO)的吸附行为。结果表明,In-MOF对MB和CV的最大吸附容量分别达309.6 mg/g和101.9 mg/g。吸附动力学分析表明:吸附过程符合准一级动力学模型;吸附等温线数据与Langmuir模型高度吻合,表明In-MOF表面存在均一的单层吸附位点。此外,In-MOF在混合染料体系(MB/MO、CV/MO)中表现出优异的选择性吸附能力,可高效分离MB和CV,而对MO几乎不吸附,表明其在染料污染物的吸附与分离领域有着潜在的应用前景。
Metal-organic frameworks(MOFs)have demonstrated remarkable advantages in the field of dye ad-sorption due to their special structure of high specific surface area and high porosity.In this study,a novel In-MOF is synthesized by solvothermal method using bis-imidazole tetracarboxylic acid ligand and indium chlo-ride,and its adsorption performances on typical cationic dyes Methylene Blue(MB),Crystal Violet(CV),and an-ionic dye Methyl Orange(MO)are investigated.The results show that the maximum adsorption capacities of In-MOF for MB and CV are 309.6 mg/g and 101.9 mg/g,respectively.The adsorption kinetics shows that the process conforms to a quasi-first-order kinetic model.The adsorption isotherm is highly consistent with the Langmuir model,indicating the presence of uniform single-layer adsorption sites on the surface of In-MOF.In-MOF exhibits excellent selective adsorption ability in mixed dye systems(MB/MO,CV/MO),which can effi-ciently separate MB and CV,while almost not adsorb MO,indicating its potential application prospects in the adsorption and separation of dye pollutants.
作者
陆国海
童科淇
孔繁花
王晓宁
LU Guohai;TONG Keqi;KONG Fanbua;WANG Xiaoning(School of Chemistry and Chemical Engineering,Wuhan Textile University,Wuhan,Hubei 430200,China)
出处
《印染》
北大核心
2025年第5期17-20,25,共5页
China Dyeing and Finishing
基金
国家自然科学基金(22101218)。
