当前位置: X-MOL 学术New J. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Two isostructural Ln3+-based heterometallic MOFs for the detection of nitro-aromatics and Cr2O72−
New Journal of Chemistry ( IF 3.3 ) Pub Date : 2020-07-03 , DOI: 10.1039/d0nj02869j
Yuxiao Zhang 1, 2, 3, 4, 5 , Yiting Ying 1, 2, 3, 4, 5 , Meng Feng 1, 2, 3, 4, 5 , Liang Wu 1, 2, 3, 4, 5 , Dongmei Wang 1, 2, 3, 4, 5 , Chunxia Li 1, 2, 3, 4, 5
Affiliation  

Luminescent MOFs (LMOFs) are increasingly regarded as potential chemical sensors with the advantages of high sensitivity and selectivity for detecting various analytes. Here, two isostructural Ln3+-based heterometallic MOFs (In/Eu-CBDA and In/Tb-CBDA) based on the tetracarboxylic acid ligand [CBDA = 5,5′-(carbonylbis(azanediyl))-diisophthalic acid] have been successfully synthesized. According to the hard and soft acid–base (HSAB) theory, the compounds exhibit excellent stability, which is conducive to the application of practical properties. Therefore, In/Eu-CBDA and In/Tb-CBDA were used in the detection of nitro-aromatics and anions. The results showed that they have the ability to detect 1,4-dinitrobenzene and Cr2O72− with high selectivity and sensitivity. In particular, Cr2O72− on In/Tb-CBDA is detected with a quenching constant of 1.72 × 104 M−1 and a detection limit of 8.72 × 10−6 M−1 in the water environment, which shows that it can be used as a promising candidate luminescent sensor for application in the detection of Cr2O72− in wastewater.

中文翻译:

两个基于Ln3 +的同构异金属MOF,用于检测硝基芳烃和Cr2O72-

发光MOF(LMOF)日益被视为潜在的化学传感器,具有检测各种分析物的高灵敏度和选择性的优点。在此,基于四羧酸配体[CBDA = 5,5'-(羰基双(氮杂二基))-二间苯二甲酸]的两个同构的基于Ln 3+的杂金属MOF(In / Eu-CBDAIn / Tb-CBDA)成功合成。根据硬酸和软酸碱(HSAB)理论,这些化合物显示出优异的稳定性,这有利于实际性能的应用。因此,In / Eu-CBDAIn / Tb-CBDA用于检测硝基芳香族化合物和阴离子。结果表明,它们具有高选择性和高灵敏度检测1,4-二硝基苯和Cr 2 O 7 2-的能力。尤其是,在水环境中,In / Tb-CBDA上的Cr 2 O 7 2-的猝灭常数为1.72×10 4 M -1,检出限为8.72×10 -6 M -1。它可以用作有希望的候选发光传感器,用于检测废水中的Cr 2 O 7 2-
更新日期:2020-07-27
down
wechat
bug