Copper-based metal–organic framework nanoparticles for sensitive fluorescence detection of ferric ions
| Autor: | Changjun Hou, Mei Yang, Fanglin Ming, Jingzhou Hou, Caihong Shen, Jun Zhou, Suyi Zhang, Danqun Huo |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Aqueous solution Materials science General Chemical Engineering 010401 analytical chemistry General Engineering Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Copper Fluorescence 0104 chemical sciences Analytical Chemistry chemistry X-ray photoelectron spectroscopy medicine Ferric 0210 nano-technology Luminescence Inductively coupled plasma mass spectrometry medicine.drug |
| Zdroj: | Analytical Methods. 11:4382-4389 |
| ISSN: | 1759-9679 1759-9660 |
| DOI: | 10.1039/c9ay01093a |
| Popis: | A luminescent amino-functionalized metal–organic framework (Cu–MOFs) was synthesized from 2-aminoterephthalic acid and Cu(II) ions by a solvothermal method. Cu–MOFs displayed blue fluorescence with a peak at 430 nm under 330 nm excitation. Its structure was characterized by FTIR, TEM, XRD, and XPS. The fluorescence of the Cu–MOFs was quenched by Fe3+ in aqueous solutions. The limit of detection was 0.5 μM, and the linear working range extended from 2 μM to 35 μM. Additionally, a good logarithmic relationship between relative fluorescence intensity (F/F0) and Fe3+ concentrations ranging from 2 to 180 μM was obtained with a detection limit of 1.56 μM (R2 = 0.9975). No clear interference was observed when challenged with a wide variety of cations and anions. The recoveries from spiked real water samples were in the range of 91.7–107.7%, and the detection results were consistent with inductively coupled plasma mass spectrometry (ICP-MS) results. Therefore, the fluorescent sensor has great potential in environmental monitoring. |
| Databáze: | OpenAIRE |
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