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Polyacrylic Acid-Ca(Eu) Nanoclusters as a Luminescence Sensor of Phosphate Ion
| Content Provider | MDPI |
|---|---|
| Author | Song, Chunhui Song, Qifa Ding, Ziyou Han, Yingchao |
| Copyright Year | 2022 |
| Description | In this study, we synthesized polyacrylic acid (PAA)-Ca (Eu) nanoclusters as a luminescence sensor of phosphate ion by a complex method, and we aimed to achieve the quantitative detection of PO_{4}$^{3−}$ based on the sensitivity of the charge transfer band of $Eu^{3+}$ to anionic ligand. The resulting PAA-Ca(Eu) nanoclusters showed a well-dispersed and a dot-like morphology, with an ultra-small diameter (the average size of 2.17 nm) under high resolution transmission electron microscopy(HRTEM) observation. A dynamic light scattering particle size analyzer (DLS) showed a hydrodynamic size of 2.39 nm. The (PAA)-Ca (Eu) nanoclusters as a luminescence sensor showed a significantly higher sensitivity for PO_{4}$^{3−}$ than other anions (CO_{3}$^{2−}$, SiO_{3}$^{2−}$, SO_{4}$^{2−}$, SO_{3}$^{2−}$, $Br^{−}$, $Cl^{−}$, $F^{−}$). The luminescence intensity displayed a linear increase (y = 19.32x + 74.75, $R^{2}$ > 0.999) in a PO_{4}$^{3}$ concentration range (0–10 mM) with the concentration of PO_{4}$^{3−}$ increase, and the limit of detection was 0.023 mM. The results showed good recovery rates and low relative standard deviations. These (PAA)-Ca (Eu) nanoclusters are hopeful to become a luminescence sensor for quantitatively detecting PO_{4}$^{3−}$. |
| Starting Page | 2398 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12142398 |
| Journal | Nanomaterials |
| Issue Number | 14 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-07-14 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Nuclear Energy and Engineering Nanoclusters Eu3+ Luminescence Sensor Po43− Detection Charge Transfer Band |
| Content Type | Text |
| Resource Type | Article |
