Method for obtaining acid-resistant and alkali-resistant blue fluorescent powder by coating 5-sulfosalicylic acid with barium sulfate

Abstract

The invention relates to a method for obtaining acid-resistant and alkali-resistant blue luminescent fluorescent powder by coating 5-sulfosalicylic acid with barium sulfate, which comprises the following steps of: 1, respectively weighing 5-sulfosalicylic acid, sodium hydroxide, sodium sulfate and barium chloride as raw materials according to a determined coating ratio; 2, respectively placing the raw materials in beakers, and adding deionized water to fully dissolve the raw materials; 3, adding the sodium hydroxide solution into the 5-sulfosalicylic acid solution, then adding the sodium sulfate solution, fully mixing the solutions, and slowly dropwise adding the barium chloride solution to obtain a white precipitate; 4, centrifugally washing the white precipitate with deionized water by using a high-speed centrifuge; and 5, drying the white precipitate, and sieving to obtain the barium sulfate coated 5-sulfosalicylic acid acid-resistant and alkali-resistant blue fluorescent powder. The method is simple, low in cost and harmless to the environment, and is expected to be applied to agricultural production, ultraviolet rays in sunlight are converted into blue light, and the photosynthesis efficiency of crops is further improved.

Description

technical field

[0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a method for obtaining acid-resistant and alkali-resistant blue fluorescent powder by coating 5-sulfosalicylic acid with barium sulfate. Background technique

[0002] Photosynthesis refers to the process in which producers in nature, such as plants, use light energy to convert carbon dioxide, water or hydrogen sulfide into carbohydrates. It is the fundamental chemical reaction that maintains the earth's ecosystem. Studying and improving the efficiency of photosynthesis can further enhance the utilization of solar energy by humans, which is of great significance for promoting agricultural production. Chloroplast is the main organelle for photosynthesis in plants, and its absorption of light energy mainly depends on chlorophyll in its body. In plants, chlorophyll mainly absorbs blue-violet light with a wavelength of around 450 nm and reflects green light ...

Examples

Embodiment 1

Step 1: According to H 3 SSA and BaSO 4 The coating is in a molar ratio of 1:3, using an analytical balance to weigh a predetermined amount (eg 0.254g, (0.001 mol)) of H 3 SSA, predetermined amount (0.24 g, (0.006 mol)) NaOH, predetermined amount (0.426 g, (0.003 mol)) Na 2 SO 4 , a predetermined amount (eg 0.625 g, (0.003 mol)) BaCl 2 as a raw material.

[0018] Step 2: Put H 3 Put SSA in a beaker, measure 20 mL of deionized water, add it to the beaker, and use magnetic stirring to completely dissolve the drug to obtain a clear and transparent solution; mix NaOH, Na 2 SO 4 , BaCl 2 They were placed in beakers, respectively, and 20 mL of a predetermined amount of deionized water were added to dissolve the drug completely using the same method, and then prepared into a predetermined amount (20 mL, 0.3 mol / L) of NaOH solution, and a predetermined amount (20 mL, 0.15 mol) of NaOH solution. / L)Na 2 SO 4 solution and a predetermined amount (20 mL, 0.15 mol / L) of BaCl 2 so...

Embodiment 2

Step 1: According to H 3 SSA and BaSO 4 The coating is in a molar ratio of 1:4, and a predetermined amount (such as 0.254g, (0.001 mol)) of H is weighed using an analytical balance. 3 SSA, predetermined amount (0.24g, (0.006 mol)) NaOH, predetermined amount (0.568g, (0.004 mol)) Na 2 SO 4 , a predetermined amount (eg 0.833 g, (0.004 mol)) BaCl 2 as a raw material.

[0023] Step 2: Put H 3 Put SSA in a beaker, measure 20 mL of deionized water, add it to the beaker, and use magnetic stirring to completely dissolve the drug to obtain a clear and transparent solution; mix NaOH, Na 2 SO 4 , BaCl 2 They were placed in beakers, respectively, and 20 mL of a predetermined amount of deionized water were added to dissolve the drug completely using the same method, and then prepared into a predetermined amount (20 mL, 0.30 mol / L) of NaOH solution, a predetermined amount (20 mL, 0.20 mol / L) of NaOH solution. / L)Na 2 SO 4 solution and a predetermined amount of (20 mL, 0.20 mol / L) B...

technical field

[0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a method for obtaining acid-resistant and alkali-resistant blue fluorescent powder by coating 5-sulfosalicylic acid with barium sulfate. Background technique

[0002] Photosynthesis refers to the process in which producers in nature, such as plants, use light energy to convert carbon dioxide, water or hydrogen sulfide into carbohydrates. It is the fundamental chemical reaction that maintains the earth's ecosystem. Studying and improving the efficiency of photosynthesis can further enhance the utilization of solar energy by humans, which is of great significance for promoting agricultural production. Chloroplast is the main organelle for photosynthesis in plants, and its absorption of light energy mainly depends on chlorophyll in its body. In plants, chlorophyll mainly absorbs blue-violet light with a wavelength of around 450 nm and reflects green light ...

Examples

Embodiment 1

Step 1: According to H 3 SSA and BaSO 4 The coating is in a molar ratio of 1:3, using an analytical balance to weigh a predetermined amount (eg 0.254g, (0.001 mol)) of H 3 SSA, predetermined amount (0.24 g, (0.006 mol)) NaOH, predetermined amount (0.426 g, (0.003 mol)) Na 2 SO 4 , a predetermined amount (eg 0.625 g, (0.003 mol)) BaCl 2 as a raw material.

[0018] Step 2: Put H 3 Put SSA in a beaker, measure 20 mL of deionized water, add it to the beaker, and use magnetic stirring to completely dissolve the drug to obtain a clear and transparent solution; mix NaOH, Na 2 SO 4 , BaCl 2 They were placed in beakers, respectively, and 20 mL of a predetermined amount of deionized water were added to dissolve the drug completely using the same method, and then prepared into a predetermined amount (20 mL, 0.3 mol / L) of NaOH solution, and a predetermined amount (20 mL, 0.15 mol) of NaOH solution. / L)Na 2 SO 4 solution and a predetermined amount (20 mL, 0.15 mol / L) of BaCl 2 so...

Embodiment 2

Step 1: According to H 3 SSA and BaSO 4 The coating is in a molar ratio of 1:4, and a predetermined amount (such as 0.254g, (0.001 mol)) of H is weighed using an analytical balance. 3 SSA, predetermined amount (0.24g, (0.006 mol)) NaOH, predetermined amount (0.568g, (0.004 mol)) Na 2 SO 4 , a predetermined amount (eg 0.833 g, (0.004 mol)) BaCl 2 as a raw material.

[0023] Step 2: Put H 3 Put SSA in a beaker, measure 20 mL of deionized water, add it to the beaker, and use magnetic stirring to completely dissolve the drug to obtain a clear and transparent solution; mix NaOH, Na 2 SO 4 , BaCl 2 They were placed in beakers, respectively, and 20 mL of a predetermined amount of deionized water were added to dissolve the drug completely using the same method, and then prepared into a predetermined amount (20 mL, 0.30 mol / L) of NaOH solution, a predetermined amount (20 mL, 0.20 mol / L) of NaOH solution. / L)Na 2 SO 4 solution and a predetermined amount of (20 mL, 0.20 mol / L) B...

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