Granular Ln-MOF@Activated Carbon Composite for Highly Selective and Sensitive Detection of Cr^(3+) Cations  

作　　者：LIU Yuebin YU Jingran ZHANG Zhiyu FENG Jinhua LIN Weihai XUE Ming 

机构地区：[1]School of Chemical Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,P.R.China

出　　处：《Chemical Research in Chinese Universities》2024年第6期1275-1281,共7页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22071076,22090061);the Project of the Department of Science and Technology of Guangdong Province,China(No.2021A1515010204).

摘　　要：Lanthanide metal-organic frameworks(MOFs)have received special attention due to their unusual coordination characteristics and exceptional luminescence properties,while their development has extremely limited by the cost effective and powder form.Herein,a gentle and facile strategy was developed to create a granular lanthanide MOFs@activated carbon(AC)composite.The obtained granular Tb-BTC@AC composite displays high fluorescent selectivity and sensitivity towards Cr^(3+) cations in water with quenching efficiency up to 90.12%,and shows great sensitivity in the range of 10^(-5)—10^(-4) mol/L with the Stern-Volmer constant of 2.224×10^(3) L/mol.Benefited by the high surface area,the abundant self-assembly space was provided for the self-assembling of the Lanthanide MOFs,which leads to promising Cr^(3+) cation-recognition ability with low MOF quantity.Also,the large size(with an average diameter of 2 mm);shaped form of this new composite material reduced the threshold of MOF application.

关 键 词：Metal-organic framework(MOF) LANTHANIDE Luminescence probe MOF-shaping 

分 类 号：O62[理学—有机化学]