Nanoparticles for sensing phosphate, method for manufacturing the same, and membrane for sensing phosphate including the same
Provided are nanoparticles for sensing phosphate, a method for manufacturing the same, and a membrane for sensing phosphate including the same. The nanoparticles for sensing phosphate include a coordination polymer in which lanthanide metal ions and ligands are coordinated, and a polymer.
1. A method for sensing phosphate, the method comprising: reacting nanoparticles with phosphate; and measuring a decrease in luminescence intensity of the nanoparticles, wherein the nanoparticles comprises: a coordination polymer in which lanthanide metal ions and ligands are coordinated, wherein the ligands comprise 2,2′-(5-carboxy-1,3-phenylene)bis(1,3-dioxoisoindoline-5-carboxylic acid); and a polymer.
2. The method of claim 1 , wherein the lanthanide metal ions comprise europium (Eu 3+ ).
3. The method of claim 1 , wherein the ligands comprise tripod ligands.
4. The method of claim 1 , wherein the polymer comprises polyvinylpyrrolidone (PVP).
5. The method of claim 1 , wherein the nanoparticles for sensing phosphate have a diameter of about 50 nm to about 150 nm.
6. A method for manufacturing nanoparticles for sensing phosphate comprising: adding lanthanide metal ions, ligands, and polymers into an organic solvent to form a mixed solution; heating and pressurizing the mixed solution; and performing centrifugation on the mixed solution to obtain nanoparticles for sensing phosphate, wherein the nanoparticles for sensing phosphate comprise: a coordination polymer in which the lanthanide metal ions and the ligands are coordinated, wherein the ligands comprise 2,2′-(5-carboxy-1,3-phenylene)bis(1,3-dioxoisoindoline-5-carboxylic acid groups); and a polymer.
7. The method of claim 6 , wherein the organic solvent comprises dimethylformaldehyde and ethanol.
8. The method of claim 7 , wherein the organic solvent further comprises sulfuric acid.
9. The method of claim 6 , wherein the heating is performed at about 100° C. to about 200° C.
10. The method of claim 6 , wherein the performing of the centrifugation on the mixed solution comprises:
adding dimethylformaldehyde (DMF) into the mixed solution,
applying ultrasonic waves to the mixed solution to be dispersed; and
removing impurities through the centrifugation.
11. The method of claim 6 , wherein the nanoparticles for sensing phosphate have a diameter of about 50 nm to about 150 nm.
12. The method of claim 2 , wherein the lanthanide metal ions comprise europium (Eu 3+ ).
13. The method of claim 6 , wherein the polymer comprises polyvinylpyrrolidone (PVP).
14. A membrane for sensing phosphate comprising: a porous membrane; and nanoparticles for sensing phosphate which are fixed on the porous membrane, wherein the nanoparticles for sensing phosphate comprises: a coordination polymer in which lanthanide metal ions and ligands are coordinated, wherein the lanthanide metal ions comprise europium (Eu 3+ ), and the ligands comprise 2,2′-(5-carboxy-1,3-phenylene) bi s (1,3-dioxoisoindoline-5-carboxylic acid); and a polymer, wherein the polymer comprises polyvinylpyrrolidone (PVP).
15. The membrane of claim 14 , wherein the porous membrane comprises at least one of PVC, glass microfiber, or nylon.
16. The membrane of claim 14 , wherein the nanoparticles for sensing phosphate have a diameter of about 50 nm to about 150 nm.