Preparation method of ZIF-8-coated light-emitting polyacid composite material and application of ZIF-8-coated light-emitting polyacid composite material to detection of sulfur ions
A ZIF-8, 1. ZIF-8 technology, applied in luminescent materials, material analysis by optical means, analysis of materials, etc., can solve the problems of increasing the fluorescence stability of EuW10, low solubility, easy to be quenched solubility, etc. Achieve the effect of increasing fluorescence intensity and alkali resistance, improving solubility, and broadening applications
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[0035] The preparation of the EuW10@ZIF-8 fluorescent probe material induced by lithium salts was prepared as follows: first, 0.5950 g of Zn(NO 3 ) 2 4H 2 O was dissolved in a 20 mL beaker containing 13 mL of methanol to form solution A; secondly, weigh 60 mg of EuW 10 , put into a 20mL beaker containing 8mL of water, add 64 mg of lithium chloride, and continuously stir to dissolve it completely to form a clear solution B. Then weigh 0.6568g of 2-methylimidazole and dissolve it in a 50mL beaker containing 13 mL of methanol to form solution C, then slowly add solution B to solution C, ultrasonicate for 10min, and quickly add solution A after the solution is clear , sonicated for 15 min, transferred to a 50 mL reactor, and reacted at 50 °C for 6 h. Finally, the solution was centrifuged, washed with water and methanol three times, and then vacuum-dried at 80 °C overnight. The obtained white powder is the fluorescence-enhanced EuW doped with lithium salt 10 @ZIF-8 probe materi...
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