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Method for preparing Sm(OH)3/AgPO4 nanocomposite by virtue of in-situ deposition method

A nano-composite and in-situ deposition technology, applied in the field of nano-semiconductor composite materials, can solve the problems of low visible light response and solar energy utilization rate of only 1%, and achieve strong visible light response, stable visible light response, and good dispersion.

Active Publication Date: 2016-06-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as a wide bandgap semiconductor, Sm(OH) 3 The response to visible light is low, and only the light below the spectrum of 390nm can be used, and the utilization rate of solar energy is only 1%.

Method used

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  • Method for preparing Sm(OH)3/AgPO4 nanocomposite by virtue of in-situ deposition method
  • Method for preparing Sm(OH)3/AgPO4 nanocomposite by virtue of in-situ deposition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation of Sm(OH) by in-situ deposition method 3 / AgPO 4 A method for a nanocomposite comprising the steps of:

[0029] 1) A certain amount of analytically pure Sm(NO) 3 ·6H 2 O was dissolved in appropriate amount of distilled water to prepare 60mLSm 3+ Solution A with a concentration of 1mol / L; add 0.2mL of analytically pure diethylenetriamine dropwise to solution A, and continue stirring for 0.5h to form a reaction precursor;

[0030] 2) Pour the reaction precursor solution into the microwave hydrothermal reaction kettle, seal the kettle and put it into the microwave hydrothermal reaction instrument (MDS-10 type), react at 200°C for 0.5h, and naturally cool to room temperature after the reaction; the product Sequentially wash with distilled water and absolute ethanol for 4 to 6 times, collect the product and dry it in vacuum at 80°C for 2 hours to obtain Sm(OH) 3 product.

[0031] 3) Add 0.2g of Sm(OH) 3 Place in 60mL of distilled water and perform ultras...

Embodiment 2

[0034] 1) A certain amount of analytically pure Sm(NO) 3 ·6H 2 O was dissolved in appropriate amount of distilled water to prepare 60mLSm 3+ Solution A with a concentration of 0.8mol / L; add 0.28mL of analytically pure diethylenetriamine dropwise to solution A, and continue stirring for 1h to form a reaction precursor;

[0035]2) Pour the reaction precursor liquid into the microwave hydrothermal reaction kettle, seal the kettle and put it into the microwave hydrothermal reaction instrument (MDS-10 type), react at 80°C for 0.5h, and naturally cool to room temperature after the reaction; the product Sequentially wash with distilled water and absolute ethanol for 4 to 6 times, collect the product and dry it in vacuum at 60°C for 2 hours to obtain Sm(OH) 3 product.

[0036] 3) Add 0.2g of Sm(OH) 3 Put it into 50mL of distilled water and carry out ultrasonic dispersion for 30min, prepare 50mL of silver nitrate solution with a concentration of 0.04mol / L and add Sm(OH) dropwise 3...

Embodiment 3

[0039] 1) A certain amount of analytically pure Sm(NO) 3 ·6H 2 O was dissolved in appropriate amount of distilled water to prepare 40mLSm 3+ Solution A with a concentration of 0.5mol / L; add 0.2mL of analytically pure diethylenetriamine dropwise to solution A, and continue stirring for 1 hour to form a reaction precursor;

[0040] 2) Pour the reaction precursor solution into the microwave hydrothermal reaction kettle, seal the kettle and put it into the microwave hydrothermal reaction apparatus (MDS-10 type), react at 100°C for 2 hours, and cool to room temperature naturally after the reaction; the products are sequentially Centrifuge and wash with distilled water and absolute ethanol for 4 to 6 times, collect the product and dry it in vacuum at 80°C for 0.5h to obtain Sm(OH) 3 product.

[0041] 3) Add 0.2g of Sm(OH) 3 Place in 40mL of distilled water and perform ultrasonic dispersion for 10min, prepare 50mL of silver nitrate solution with a concentration of 0.01mol / L and a...

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Abstract

The invention discloses a method for preparing an Sm(OH)3 / AgPO4 nanocomposite by virtue of an in-situ deposition method. The method comprises the following steps: dissolving Sm(NO)3.6H2O into a proper amount of distilled water so as to obtain a solution A; dropwise adding diethylenetriamine into the solution A, and further stirring to form a reaction precursor solution; pouring the reaction precursor solution into a microwave hydrothermal reaction kettle, sealing the microwave hydrothermal reaction kettle, placing the microwave hydrothermal reaction kettle into a microwave hydrothermal instrument to react, and naturally cooling to the room temperature after the reaction; washing products, and carrying out vacuum drying on the products, so as to obtain a Sm(OH)3 product; adding Sm(OH)3 into distilled water, carrying out ultrasonic dispersion, preparing a silver nitrate solution, dropwise adding the silver nitrate solution into an Sm(OH)3 dispersion solution, and stirring in a dark environment, so as to obtain a mixed solution; preparing a sodium dihydrogen phosphate solution, dropwise adding the sodium dihydrogen phosphate solution into the mixed solution in the dark environment, further stirring until the reaction is finished, and sequentially carrying out washing and vacuum drying, so as to obtain the Sm(OH)3 / AgPO4 nanocomposite. According to the method, distilled water is utilized as a reaction medium, the reaction raw materials are easily available, and the safety is high; the obtained product is high in purity, uniform in size and particle size, good in dispersity and excellent in photocatalytic performance.

Description

technical field [0001] The invention relates to the field of nano-semiconductor composite materials, in particular to a Sm(OH) 3 / AgPO 4 Methods for the preparation of nanocomposites. Background technique [0002] Sm(OH) 3 It is a white powder, insoluble in water, soluble in inorganic acid. As a typical rare earth metal hydroxide material, Sm(OH) 3 With the unique structural properties of lanthanides, nanoscale Sm(OH) 3 It also has the characteristics of rare earth and nanomaterials, and has remarkable electrical, optical, magnetic and photocatalytic properties, so it is used in many fields and has broad prospects in the field of photocatalytic degradation of pollutants. [0003] However, as a wide bandgap semiconductor, Sm(OH) 3 The response to visible light is low, only the light below 390nm can be used, and the utilization rate of solar energy is only 1%. Contents of the invention [0004] The object of the present invention is to provide a kind of adopting in-si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18
CPCB01J27/1817B01J35/39
Inventor 殷立雄张东东柴思敏黄剑锋孔新刚张浩刘长青梁忠吴雅博
Owner SHAANXI UNIV OF SCI & TECH
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