一种铜配合物的制备及其对甲基橙的高效吸附  

Preparation of a Copper Coordination Polymer and Its Efficient Adsorption of Methyl Orange

作　　者：吴秋艳[1] 汪鹏飞[1,2] WU Qiuyan;WANG Pengfei(Key Laboratory of Micro-Nano Powder and Advanced Energy Materials of Anhui Higher Education Institutes,Chizhou University,Chizhou 247000,China;State Key Laboratory of Coordination Chemistry,Nanjing University,Nanjing 210023,China)

机构地区：[1]池州学院微纳粉体与先进能源材料安徽省普通高校重点实验室,安徽池州247000 [2]南京大学配位化学国家重点实验室,江苏南京210023

出　　处：《安庆师范大学学报（自然科学版）》2023年第2期1-9,共9页Journal of Anqing Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(21802010);安徽省教育厅重点项目(KJ2020A0763);安徽省教育厅重大项目(2022AH040253);南京大学配位化学国家重点实验室开放基金项目(SKLCC1805)。

摘　　要：为了有效去除废水中的染料,本文采用简单的直接沉淀法制备了一种铜配合物(Cu-CP),该方法无需任何模板剂和表面活性剂参与。采用元素分析仪、红外光谱仪、扫描电镜、X-射线光电子能谱仪、X-射线粉末衍射仪、热重以及氮气吸附-脱附等手段表征了该铜配合物。将该铜配合物作为吸附剂用于去除水溶液中的甲基橙染料,结果显示其对该染料具有优异的去除能力,同时吸附动力学结果显示其吸附特征符合准二级动力学模型,且吸附热力学结果表明该吸附过程是自发进行的放热过程。对吸附机理分析表明,其去除甲基橙的优异性能主要归因于该配合物的硫酸根离子与甲基橙的磺酸根离子间发生的离子交换作用。To effectively eliminate dyes from the wastewater,a Cu(Ⅱ)-based coordination polymer(Cu-CP)was pre-pared via a simple direct precipitation method without any template or surfactant.The Cu-CP was characterized through vari-ous methods including EA,FT-IR,SEM,XPS,XRD,TG and N2 adsorption-desorption analysis.As an adsorbent,the Cu-CP was employed for the removal of methyl orange(MO)from aqueous solutions,demonstrating its excellent capability in MO re-moval.The adsorption equilibrium data agreed well with the pseudo-second-order.The study of adsorption thermodynamics shows that the adsorption process is spontaneous and exothermic.The adsorption mechanism can be attributed to the high ad-sorption capability resulting from the ionic exchange type of the Cu-CP adsorbent.

关 键 词：甲基橙 弱配位键 吸附 离子交换 水纯化 

分 类 号：TQ132.4[化学工程—无机化工]