Upconversion fluorescent nanomaterial with catalytic ability, and preparation method and application thereof
A technology of fluorescent nanomaterials and catalytic capabilities, applied in luminescent materials, chemical instruments and methods, wave energy or particle radiation treatment materials, etc., can solve problems such as difficult photodynamic therapy
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[0025] The present invention also provides a preparation method for the up-conversion fluorescent nanomaterial described in the above technical solution, comprising the following steps:
[0026] (1) The chemical composition in the up-conversion fluorescent nanomaterial corresponding to the above-mentioned technical scheme will include Gd(NO 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 Mix the mixed liquid with soluble manganese salt and urea for hydrothermal reaction to obtain the precursor of fluorescent material;
[0027] (2) Calcining the precursor obtained in the step (1) to obtain an up-conversion fluorescent nanomaterial with catalytic ability.
[0028] The present invention will include Gd(NO 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 The mixed liquid with soluble manganese salt is mixed with urea to carry out hydrothermal reaction to obtain the precursor of fluorescent material. In the present invention, Gd(NO 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 and the consumption of solu...
Embodiment 1
[0036] (1) Add 37.5535g deionized water into a 50mL beaker, and add 1.4115mL1mol L in turn during stirring -1 Gd(NO 3 ) 3 , 0.585mL 0.1mol L -1 Yb(NO 3 ) 3 , 0.3mL0.05mol L -1 Er(NO 3 ) 3 and 0.15mL 0.1mol L -1 Mn(CH 3 COO) 2 solution, mix well and stir for 5min to obtain 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 and a mixture of soluble manganese salts;
[0037] (2) Add 3 g of urea to the mixed solution in step (1), and continue to stir for 2 h at room temperature, then transfer to a 50 mL reaction kettle, and perform a hydrothermal reaction at a constant temperature of 85° C. for 3 h;
[0038] (3) After the reaction is completed and the solution is cooled, transfer the sample to a centrifuge tube, -1 The precipitate obtained by centrifuging at a high speed for 5 minutes is the precursor product, which is washed three times with deionized water and ethanol solution respectively, and finally the product is dried in an oven at 60°C for 12 hours; then the nanomaterials ...
Embodiment 2
[0042] Prepare up-conversion fluorescent nanomaterial Gd according to the preparation method of Example 1 2 o 3 :Yb 3+ ,Er 3+ ,Mn 2+ , the difference is that the hydrothermal reaction temperature is 80°C, the sintering temperature is 800°C, the raw material Gd(NO 3 ) 3 , Yb(NO 3 ) 3 , Er(NO 3 ) 3 and Mn(CH 3 COO) 2 The dosage ratio is 0.946:0.039:0.01:0.005 (molar ratio), the Gd obtained in this way 2 o 3 :Yb 3+ ,Er 3+ ,Mn 2+ The molar ratio of Gd, Yb, Er and Mn in the fluorescent nanomaterial is 0.946:0.039:0.01:0.005.
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