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High-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth, and preparation method thereof

A plant growth lamp, bismuth phosphate red technology, applied in the field of inorganic luminescent material preparation, can solve the problem that the luminous performance needs to be further improved, and achieve the effects of short preparation period, convenient operation and great application potential

Inactive Publication Date: 2017-11-28
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

However, to make it a luminescent material that can be applied in various fields, its luminescent performance still needs to be further improved.

Method used

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  • High-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth, and preparation method thereof
  • High-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth, and preparation method thereof
  • High-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth, and preparation method thereof

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Effect test

preparation example Construction

[0028] The invention provides a kind of high luminous efficiency BiPO for plant growth lamp 4 :Tb 3+ / Eu 3+ The preparation method of the red fluorescent powder can make the luminous efficiency of the plant lamp high, so as to meet the needs of plant growth, and specifically includes the following steps:

[0029] 1) Bi(NO 3 ) 3 ·5H 2 0, Tb(NO 3 ) 3 and Eu(NO 3 ) 3 Dissolve in 10ml of dilute nitric acid with a concentration of 0.15mol / L to 0.25mol / L and stir evenly to obtain solution A, in which Eu(NO 3 ) 3 What is added is Eu(NO 3 ) 3 solution. Will NH 4 h 2 PO 4 Dissolve in deionized water to obtain solution B with a concentration of 0.4 mol / L. According to (Bi 3+ +Tb 3+ +Eu 3+ ): PO 4 3- =1:1 molar ratio, solution B was added dropwise to solution A, and stirred evenly to obtain a reaction precursor solution. Tb 3+ accounted for (Bi 3+ +Tb 3+ +Eu 3+ ) with a mole percentage of 10%, Eu 3+ Bi 3+ +Tb 3+ +Eu 3+ 1 to 11% of the total moles.

[0030] ...

Embodiment 1

[0035] Step 1: 3.56mmol of Bi(NO 3 ) 3 ·5H 2 O and 0.4mmol of Tb(NO 3 ) 3 ·6H 2 O, 0.4ml concentration of 0.1mol / L Eu(NO 3 ) 3 The solution was dissolved in 10ml of dilute nitric acid with a concentration of 0.15mol / L, and stirred until uniform to obtain solution A. At this time, Eu 3+ Bi 3+ +Tb 3+ +Eu 3+ 1% of the total moles. 4mmol of NH 4 h 2 PO 4 Dissolve in 10ml deionized water and stir until uniform to obtain solution B with a concentration of 0.4mol / L. Add solution B to solution A dropwise to obtain a precursor solution, and stir for 30 minutes until uniform.

[0036] Step 2: Adjust the value of the precursor solution to 1 with ammonia water and dilute nitric acid.

[0037] Step 3: Transfer the precursor liquid to a polytetrafluoroethylene-lined reactor, the filling ratio of the hydrothermal reactor is 75%, and seal the hydrothermal reactor.

[0038] Step 4: Put the hydrothermal reaction kettle into an oven, raise the temperature from room temperature to 1...

Embodiment 2

[0041] Step 1: 3.48mmol of Bi(NO 3 ) 3 ·5H 2 O and 0.4mmol of Tb(NO 3 ) 3 ·6H 2 O, 1.2ml concentration of 0.1mol / L Eu(NO 3 ) 3 The solution was dissolved in 10ml of dilute nitric acid with a concentration of 0.15mol / L, and stirred until uniform to obtain solution A. At this time, Eu 3+ Bi 3+ +Tb 3+ +Eu 3+ 3% of the total moles. 4mmol of NH 4 h 2 PO 4 Dissolve in 10ml deionized water and stir until uniform to obtain solution B with a concentration of 0.4mol / L. Add solution B to solution A dropwise to obtain a precursor solution, and stir for 30 minutes until uniform.

[0042] Step 2: Use ammonia water and dilute nitric acid to adjust the value of the precursor solution to 1.5.

[0043] Step 3: Transfer the precursor liquid to a polytetrafluoroethylene-lined reactor, the filling ratio of the hydrothermal reactor is 75%, and seal the hydrothermal reactor.

[0044] Step 4: Put the hydrothermal reaction kettle into the oven, raise the temperature from room temperatu...

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Abstract

The invention relates to a high-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth, and a preparation method thereof. The preparation method comprises following steps: Bi(NO<3>)<3>.5H<2>O, Tb(NO<3>)<3>, and Eu(NO<3>)<3> are dissolved in an acid solution so as to obtain a solution A; a NH4H2PO4 solution is added into the solution A dropwise at a ratio of the molar total amount of Bi3+, Tb3+, and Eu3+ to the molar amount of PO<4><3><-> of 1:1, and uniform stirring is carried out so as to obtain a precursor solution; the pH value of the precursor solution is adjusted to 1 to 3; the precursor solution is subjected to hydro-thermal reaction so as to obtain a precipitate; the precipitate is collected, is washed, and is dried so as to obtain the high-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder used for plant growth. According to the preparation method, luminous effect is improved via adjusting the different concentrations of the rare earth ions; the high-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder is excellent in luminous effect; the luminous effect of the high-luminous-effect rare earth ion terbium europium double-doped bismuth phosphate red fluorescent powder is obviously higher than that of single-doped rare earth ions; and requirements of plant growth lamps can be satisfied.

Description

technical field [0001] The invention relates to the field of preparation of inorganic luminescent materials, in particular to a high-light-efficiency rare earth ion terbium-europium double-doped bismuth phosphate red fluorescent powder for plant growth lamps and a preparation method thereof. Background technique [0002] In recent years, people's requirements for lighting have been increasing day by day, and energy-saving lamp lighting products have received more and more attention from all walks of life. Among them, plant growth lamps can be used to improve the efficiency of plant photosynthesis and promote crop production, quality and income, and thus are welcomed by the majority of planting owners. In order to obtain high-efficiency plant growth lamps, rare earth luminescent materials are used in the design and manufacturing process to provide suitable light sources to meet the growth needs of different plants. [0003] Bismuth phosphate materials have structural variabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/74A01G7/04
CPCA01G7/04C09K11/7795Y02P60/14
Inventor 刘丁菡高方刘运马随艳赵敏竹左浩强李晋阳王凯
Owner SHAANXI UNIV OF SCI & TECH
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