Highly Sensitive Adsorption and Detection of Iodide in Aqueous Solution by a Post-Synthesized Zirconium-Organic Framework
Open Access
- 4 December 2022
- Vol. 27 (23), 8547
- https://doi.org/10.3390/molecules27238547
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 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.Funding Information
- National Natural Science Foundation of China (52102190)
This publication has 50 references indexed in Scilit:
- Iodine Isotopes in Precipitation: Temporal Responses to 129I Emissions from the Fukushima Nuclear AccidentEnvironmental Science & Technology, 2013
- Activity concentrations of environmental samples collected in Fukushima Prefecture immediately after the Fukushima nuclear accidentScientific Reports, 2013
- Behavior of medically-derived 131I in the tidal Potomac RiverScience of The Total Environment, 2013
- A Selective Iodide Ion Sensor Electrode Based on Functionalized ZnO NanotubesSensors, 2013
- Medically-derived 131I in municipal sewage effluentWater Research, 2012
- Au25(SG)18 as a fluorescent iodide sensorNanoscale, 2012
- Targeting of tumor radioiodine therapy by expression of the sodium iodide symporter under control of the survivin promoterCancer Gene Therapy, 2010
- A zirconium methacrylate oxocluster as precursor for the low-temperature synthesis of porous zirconium(iv) dicarboxylatesChemical Communications, 2009
- Iodide‐Selective Electrodes Based on Bis[N(2‐methyl‐phenyl) 4‐Nitro‐thiobenzamidato]mercury(II) and Bis[N‐phenyl 3,5‐Dinitro‐thiobenzamidato]mercury(II) CarriersElectroanalysis, 2005
- Chemiluminescence determination of iodide and/or iodine using a luminol–hexadecyltrimethylammonium chloride reversed micelle system following on-line oxidation and extractionThe Analyst, 2000