Preparation method of Au/Cu co-modified Sn3O4 nano composite photocatalytic material

A photocatalytic material and nanocomposite technology, which is applied in the field of preparation of nanocomposite photocatalysts, can solve the problems of obvious hard agglomeration effect of samples, easy falling off of supported metals, complicated preparation process, etc., and achieve controllable shape and size, shape Controllable and low preparation temperature

Inactive Publication Date: 2018-12-28
PINGDINGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above preparation methods have their unique advantages, but most of the disadvantages lie in the complex preparation process, the need for multi-step reactions, the obvious hard agglomeration effect of the sample, and the easy fall-off of the loaded metal, etc.

Method used

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  • Preparation method of Au/Cu co-modified Sn3O4 nano composite photocatalytic material

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Effect test

Embodiment 1

[0026] 1) get 1mmol analytically pure stannous tartrate (C 4 h 4 o 6 Sn) and 0.2mmol of tartaric acid (C 4 h 6 o 6 ), fully dissolved in 5mL of dehydrated ethanol, followed by adding 2mmol of dodecyl ethoxy sulfobetaine and 10mL of deionized water to completely dissolve to obtain solution A;

[0027] 2) Take 1mmol analytically pure auric acid chloride (HAuCl 4 ), 1mmol of copper nitrate (Cu(NO 3 ) 2 ) and 0.03mmol of tartaric acid (C 4 h 6 o 6 ) was fully dissolved in 5mL of deionized water, and mixed uniformly to obtain solution B;

[0028] The steps 1 and 2) in the ice-salt bath composed of NaCl and crushed ice use a constant temperature magnetic stirring device to carry out continuous magnetic stirring at a temperature of -5°C;

[0029] 3) Add solution B dropwise to solution A at a rate of 30 drops / min, and then use 3mol / L NaOH solution to adjust its pH to 4. The whole process uses a constant temperature magnetic force in an ice-salt bath composed of NaCl and cru...

Embodiment 2

[0033] 1) get 1mmol analytically pure stannous tartrate (C 4 h 4 o 6 Sn) and 1.6mmol of tartaric acid (C 4 h 6 o 6 ), fully dissolved in 11mL of absolute ethanol, followed by adding 7mmol of dodecyl ethoxy sulfobetaine and 15mL of deionized water to completely dissolve to obtain solution A;

[0034] 2) Take 1mmol analytically pure auric acid chloride (HAuCl 4 ), 5mmol of copper nitrate (Cu(NO 3 ) 2 ) and 3mmol of tartaric acid (C 4 h 6 o 6 ) was fully dissolved in 7mL of deionized water, and mixed uniformly to obtain solution B;

[0035] The steps 1 and 2) use a constant temperature magnetic stirring device to carry out continuous magnetic stirring at a temperature of 10° C. in an ice-salt bath composed of NaCl and crushed ice;

[0036] 3) Add solution B dropwise to solution A at a rate of 50 drops / min, and then adjust its pH value to 6.5 with 6mol / L NaOH solution. The whole process uses a constant temperature magnetic force in an ice-salt bath composed of NaCl and ...

Embodiment 3

[0041] 1) get 1mmol analytically pure stannous tartrate (C 4 h 4 o 6 Sn) and 3mmol of tartaric acid (C 4 h 6 o 6 ), fully dissolved in 15mL of absolute ethanol, followed by adding 12mmol of dodecyl ethoxy sulfobetaine and 20mL of deionized water to completely dissolve to obtain solution A;

[0042] 2) Take 1mmol analytically pure auric acid chloride (HAuCl 4 ), 10mmol of copper nitrate (Cu(NO 3 ) 2 ) and 5mmol of tartaric acid (C 4 h 6 o 6 ) was fully dissolved in 18mL of deionized water, and mixed uniformly to obtain solution B;

[0043] The steps 1 and 2) in the whole process, use a constant temperature magnetic stirring device to carry out continuous magnetic stirring at a temperature of 30 ° C in an ice-salt bath composed of NaCl and crushed ice;

[0044] 3) Add solution B dropwise to solution A at a rate of 60 drops / min, and then adjust its pH value to 9 with 10mol / L NaOH solution. The whole process uses constant temperature magnetic force in an ice-salt bath c...

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Abstract

The invention discloses a preparation method of a shape-controlled binary metal loaded Au / Cu co-modified Sn3O4 nano composite photocatalytic material. The nano composite material is the Au / Cu co-modified Sn3O4 nano composite material obtained by placing chloroauric acid, cupric nitrate and a tin source material into a solvent, a surfactant and a reducing agent and forming chemical bond complexingamong composite ingredients of the materials by an ice salt bath and solvent combined hot wet chemical in-situ synthesis method. The composite material prepared by the invention utilizes a plasma resonance effect of Au / Cu binary metal nanoparticles, an oxygen vacancy effect of an Sn3O4 material and excellent electron conduction of Au / Cu metal nanoparticles, and implements rapid electron-hole separation in the process of cooperating photocatalytic oxidation and reduction degradation of pollutants with photocatalytic water splitting hydrogen production, thereby improving efficiency of photocatalytic water splitting and photocatalytic rhodamine B degradation of the Au / Cu co-modified Sn3O4 nano composite photocatalytic material.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite photocatalyst, in particular to an Au / Cu co-modified Sn 3 o 4 Preparation method of nanocomposite photocatalytic material. Background technique [0002] Environmental pollution and energy shortage have become urgent problems on the road to sustainable development, and it is imperative to degrade pollutants and develop clean energy. The development of solar photocatalysis technology is of great significance to alleviate the problems of air pollution and energy shortage in our country, as well as to accelerate the realization of green development goals and further enhance the international competitiveness in the field of clean energy preparation technology. [0003] In literature reports, non-stoichiometric tin oxide Sn 3 o 4 It exhibits a small band gap and excellent visible light photocatalytic performance. Layered Sn prepared by hydrothermal method 3 o 4 The nanosheets have a visi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J35/02C01B3/04
CPCB01J23/8966B01J35/004B01J35/023C01B3/042C01B2203/1076C01B2203/1088Y02E60/36
Inventor 杨柳青马威高航田正山罗晓强
Owner PINGDINGSHAN UNIVERSITY
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