Method for preparing AgO/Sm(OH)3/ZnO nanometer complex by using two-step method

A nanocomposite, step-by-step technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of only 1% solar energy utilization rate and low visible light. , to achieve the effects of controllable morphology, low reaction cost and good industrialization prospects

Active Publication Date: 2015-11-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a wide bandgap semiconductor, Sm(OH) 3 The response to visible light is low, and only 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 AgO/Sm(OH)3/ZnO nanometer complex by using two-step method
  • Method for preparing AgO/Sm(OH)3/ZnO nanometer complex by using two-step method
  • Method for preparing AgO/Sm(OH)3/ZnO nanometer complex by using two-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) The analytically pure Sm(NO 3 ) 3 ·6H 2 O was dissolved in an appropriate amount of deionized water to prepare Sm 3+ Concentration is solution A of 2mol / L; Analytical pure Zn(NO 3 ) 2 ·3H 2 O was dissolved in an appropriate amount of deionized water to prepare Zn 2+ Solution B with a concentration of 0.5mol / L;

[0029] 2) Mix solutions A and B at a volume ratio of 10:1 and adjust the pH to 9 with ammonia solution, and continue stirring to form a reaction precursor evenly;

[0030] 3) Pour the reaction precursor solution into a homogeneous hydrothermal reactor with a filling ratio of 40%; after sealing the reactor, react in a homogeneous reactor at 200°C for 12 hours, and cool to room temperature naturally after the reaction;

[0031] 4) Wash the product by centrifugation for 4 to 6 times with deionized water and absolute ethanol in sequence, collect the product and dry it in vacuum at 70°C for 1 hour to obtain Sm(OH) 3 / ZnO precursor;

[0032] 5) The analyti...

Embodiment 2

[0034] 1) The analytically pure Sm(NO 3 ) 3 ·6H 2 O was dissolved in an appropriate amount of deionized water to prepare Sm 3+ Concentration is the solution A of 0.5mol / L; Analytical pure Zn(NO 3 ) 2 ·3H 2 O was dissolved in an appropriate amount of deionized water to prepare Zn 2+ Solution B with a concentration of 1mol / L;

[0035] 2) Mix solutions A and B at a volume ratio of 12:1 and adjust the pH to 10 with ammonia solution, and continue stirring to form a reaction precursor;

[0036] 3) Pour the reaction precursor solution into a homogeneous hydrothermal reaction kettle, seal the kettle and put it in a homogeneous reactor, react at 180°C for 48 hours, and cool it down to room temperature naturally after the reaction;

[0037] 4) Wash the product by centrifugation with deionized water and absolute ethanol for 4 to 6 times in sequence, collect the product and dry it in vacuum at 80°C for 0.5h to obtain Sm(OH) 3 / ZnO precursor;

[0038] 5) The analytically pure Sm(O...

Embodiment 3

[0040] 1) The analytically pure Sm(NO 3 ) 3 ·6H 2 O was dissolved in an appropriate amount of deionized water to prepare Sm 3+Concentration is solution A of 2mol / L; Analytical pure Zn(NO 3 ) 2 ·3H 2 O was dissolved in an appropriate amount of deionized water to prepare Zn 2+ Solution B with a concentration of 0.5mol / L;

[0041] 2) Mix solutions A and B at a volume ratio of 20:1 and adjust the pH to 12 with ammonia solution, and continue stirring to form a reaction precursor;

[0042] 3) Pour the reaction precursor solution into a homogeneous hydrothermal reactor with a filling ratio of 50%; after sealing the reactor, react in a homogeneous reactor at 150°C for 20 hours, and cool to room temperature naturally after the reaction;

[0043] 4) Wash the product by centrifugation for 4 to 6 times with deionized water and absolute ethanol in sequence, collect the product and dry it in vacuum at 80°C for 2 hours to obtain Sm(OH) 3 / ZnO precursor;

[0044] 5) The analytically ...

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Abstract

The present invention discloses a method for preparing a AgO / Sm(OH)3 / ZnO nanometer complex by using a two-step method. The method comprises: preparing a solution A with a Sm<3+> concentration of 0.5-2 mol / L; preparing a solution B with a Zn<2+> concentration of 0.5-2mol / L; mixing the solution A and the solution B, and adjusting the pH value to 9-12 with an ammonia water solution to form a reaction precursor solution; carrying out a homogeneous reaction on the precursor solution, and naturally cooling to a room temperature after completing the reaction; washing, collecting the product, and carrying out vacuum drying for 0.5-2 h at a temperature of 60-80 DEG C so as to obtain a Sm(OH)3 / ZnO precursor; and dispersing the precursor in an ethanol solution of silver nitrate, placing into a water bath kettle, heating for 1-3 h at a temperature of 60-80 DEG C, cooling to a room temperature, and carrying out centrifugation washing drying on the production area so as to obtain the AgO / Sm(OH)3 / ZnO nanometer complex. According to the present invention, the reaction medium is the aqueous solution, the safety is high, the feasibility is strong, the process equipment requirements are low, and the operation is simple.

Description

【Technical field】 [0001] The invention relates to the field of preparation of nano-semiconductor composite materials, in particular to a two-step method for preparing AgO / Sm(OH) 3 / ZnO nanocomposite approach. 【Background technique】 [0002] Sm(OH) 3 It is a white powder, insoluble in water, soluble in inorganic acid. Sm(OH) 3 As a typical rare earth metal hydroxide material, nanoscale Sm(OH) 3 It has the characteristics of both rare earth and nanometer materials, and has potential application value in many fields of functional materials such as high-efficiency light-emitting devices, magnetic materials, and catalytic materials. As a wide bandgap semiconductor, Sm(OH) 3 The response to visible light is relatively low, and only light below the spectrum of 390nm can be used, and the utilization rate of solar energy is only 1%. 【Content of invention】 [0003] The object of the present invention is to provide a kind of adopting two-step method to prepare AgO / Sm(OH) 3 / Zn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66
Inventor 殷立雄张东东黄剑锋孔新刚王菲菲柴思敏张浩
Owner SHAANXI UNIV OF SCI & TECH
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