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Authors = Jiaolai Jiang

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10 pages, 3004 KiB  
Article
Highly Sensitive Adsorption and Detection of Iodide in Aqueous Solution by a Post-Synthesized Zirconium-Organic Framework
by Jun Zhang, Shanli Yang, Lang Shao, Yiming Ren, Jiaolai Jiang, Huaisheng Wang, Hao Tang, Hui Deng and Tifeng Xia
Molecules 2022, 27(23), 8547; https://doi.org/10.3390/molecules27238547 - 4 Dec 2022
Cited by 10 | Viewed by 4775
Abstract
Effective methods of detection and removal of iodide ions (I) from radioactive wastewater are urgently needed and developing them remains a great challenge. In this work, an Ag+ decorated stable nano-MOF UiO-66-(COOH)2 was developed for the I to [...] Read more.
Effective methods of detection and removal of iodide ions (I) from radioactive wastewater are urgently needed and developing them remains a great challenge. In this work, an Ag+ decorated stable nano-MOF UiO-66-(COOH)2 was developed for the I to simultaneously capture and sense in aqueous solution. Due to the uncoordinated carboxylate groups on the UiO-66-(COOH)2 framework, Ag+ was successfully incorporated into the MOF and enhanced the intrinsic fluorescence of MOF. After adding iodide ions, Ag+ would be produced, following the formation of AgI. As a result, Ag+@UiO-66-(COOH)2 can be utilized for the removal of I in aqueous solution, even in the presence of other common ionic ions (NO2, NO3, F, SO42−). The removal capacity as high as 235.5 mg/g was calculated by Langmuir model; moreover, the fluorescence of Ag+@UiO-66-(COOH)2 gradually decreases with the deposition of AgI, which can be quantitatively depicted by a linear equation. The limit of detection toward I is calculated to be 0.58 ppm. Full article
(This article belongs to the Special Issue Multifunctional Metal-Organic Framework Materials)
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