A kind of ultraviolet-visible light absorber and application thereof
An absorber and visible light technology, applied in the field of ultraviolet light absorbing materials, to achieve the effect of small particle size, good thermal stability and high efficiency
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Embodiment 1
[0031] Example 1 An ultraviolet-visible light absorber is prepared by the following preparation method:
[0032] 1) The preparation concentration is 0.10 mol L -1 Lanthanum oxide solution and sulfuric acid solution with a mass concentration of 70%, add sulfuric acid solution dropwise to the lanthanum oxide solution, react at 40°C for 2 h to generate La 2 (SO 4 ) 3 ; Wherein, the volume ratio of the lanthanum oxide solution and the sulfuric acid solution is 2:3;
[0033] 2) The preparation concentration is 0.30 mol L -1 Tungstic acid solution, and add ammoniacal liquor to tungstic acid solution, reaction prepares ammonium tungstate; Wherein, the volume ratio of described tungstic acid solution and ammoniacal liquor is 1:3;
[0034] 3) To the La generated in step 1) 2 (SO 4 ) 3 Add the ammonium tungstate solution generated in step 2) dropwise into the solution until a white precipitate is formed, then add Ce(SO 4 ) 2 4H 2 The O solution continued to react for 30 min, a...
Embodiment 2
[0044] Example 2 An ultraviolet-visible light absorber is prepared by the following preparation method:
[0045] 1) The preparation concentration is 0.12 mol L -1 Lanthanum oxide solution and sulfuric acid solution with a mass concentration of 80%, add sulfuric acid solution dropwise to the lanthanum oxide solution, react at 50°C for 2.5h to generate La 2 (SO 4 ) 3 ; Wherein, the volume ratio of the lanthanum oxide solution and the sulfuric acid solution is 5:8;
[0046] 2) The preparation concentration is 0.40 mol L -1 Tungstic acid solution, and add ammoniacal liquor to tungstic acid solution, reaction prepares ammonium tungstate; Wherein, the volume ratio of described tungstic acid solution and ammoniacal liquor is 2:7;
[0047] 3) To the La generated in step 1) 2 (SO 4 ) 3 Add the ammonium tungstate solution generated in step 2) dropwise into the solution until a white precipitate is formed, then add Ce(SO 4 ) 2 4H 2 The O solution continued to react for 45 min, ...
Embodiment 3
[0052] Example 3 An ultraviolet-visible light absorber is prepared by the following preparation method:
[0053] 1) The preparation concentration is 0.15 mol L -1 Lanthanum oxide solution and sulfuric acid solution with a mass concentration of 85%, add sulfuric acid solution dropwise to the lanthanum oxide solution, react at 60°C for 3 h to generate La 2 (SO 4 ) 3 ; Wherein, the volume ratio of the lanthanum oxide solution and the sulfuric acid solution is 3:5;
[0054] 2) The preparation concentration is 0.50 mol L -1 Tungstic acid solution, and add ammoniacal liquor to tungstic acid solution, react and prepare ammonium tungstate; Wherein, the volume ratio of described tungstic acid solution and ammoniacal liquor is 1:4;
[0055] 3) To the La generated in step 1) 2 (SO 4 ) 3 Add the ammonium tungstate solution generated in step 2) dropwise into the solution until a white precipitate is formed, then add Ce(SO 4 ) 2 4H 2 The O solution continued to react for 60 min, a...
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