锆基/四苯乙烯衍生物金属有机骨架荧光探针测定水中Cu^(2+)  

Detection of Cu^(2+)in water using zirconium-based/tetraphenylethylene derivative metal-organic frameworks as fluorescent probe

作　　者：赵东升 靳凤龙 高宇[1] 侯忠雨 周思冰 刘鑫瑶 尤坤雄 初红涛[1] 高立娣[1] 秦世丽 ZHAO Dongsheng;JIN Fenglong;GAO Yu;HOU Zhongyu;ZHOU Sibing;LIU Xinyao;YOU Kunxiong;CHU Hongtao;GAO Lidi;QIN Shili(College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161000,China;Qiqihar Inspection and Testing Center,Qiqihar Administration for Market Regulation,Qiqihar 161000,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161000 [2]齐齐哈尔市场监督管理局齐齐哈尔检验检测中心,齐齐哈尔161000

出　　处：《分析试验室》2024年第9期1316-1322,共7页Chinese Journal of Analysis Laboratory

基　　金：黑龙江省大学生创新创业训练计划(202110232093)项目资助。

摘　　要：采用溶剂热法,以ZrCl4为金属源、四[4-(4’-羧基苯基)苯基]乙烯(H4ETTC)为配体,制备了形貌规则、比表面积大、结晶度高、热稳定性和发光性能良好的荧光金属有机骨架材料(PCN-128),并将其应用于生活饮用水中Cu^(2+)的检测。结果表明,所制备材料对Cu^(2+)表现出较高的选择性和灵敏度,在0~50μmol/L浓度范围内,其荧光猝灭率随Cu^(2+)浓度的增加呈现良好的线性关系(R^(2)>0.99),检出限为0.85μmol/L。将其应用于实际水样检测,加标回收率大于95.6%,相对标准偏差小于7.1%。同时,PCN-128还表现出对Cu^(2+)优异的吸附性能,吸附量可达555 mg/g。该荧光探针对Cu^(2+)的特异性荧光响应和良好的吸附能力,使其在环境污染物监测、处理等方面具有广阔的应用前景。Fluorescent metal-organic frameworks(PCN-128)were prepared by the solvothermal method using ZrCl_4 and 4′,4″,4?,4′′′′-(ethene-1,1,2,2-tetrayl)tetrabiphenyl-4-carboxylic acid(H_(4)ETTC)as metal source and ligand,respectively,which had the advantages of regular morphology,large surface area,high crystallinity,good thermal stability,and luminescence property.Meanwhile,PCN-128 as a fluorescent probe for the detection of Cu^(2+)in water exhibited high sensitivity and selectivity.The fluorescence quenching efficiency of PCN-128 displayed a good linear relationship to Cu^(2+)concentration in a wide range of 0-50μmol/L and a detection limit of 0.85μmol/L.The fluorescent probe was applied for detecting Cu^(2+)in the real water samples with satisfying recoveries over 95.6%and a relative standard deviation less than 7.1%.Furthermore,PCN-128 also showed excellent adsorption property with adsorption amounts up to 555 mg/g.PCN-128 showed broad application prospects in the monitoring and treatment of environmental pollutants because of its specific fluorescence response and good adsorption capacity for Cu^(2+).

关 键 词：锆基金属有机骨架 荧光检测 Cu^(2+) 

分 类 号：O657.3[理学—分析化学]