Preparation method of polypyrrole/metal-modified Sn3O4 nano composite photocatalytic material

A photocatalytic material and metal modification technology, applied in the field of preparation of nanocomposite photocatalytic materials, can solve the problems of obvious hard agglomeration effect of samples, easy falling off of supported metals, complicated preparation process, etc., and achieve excellent photocatalytic performance and particle size distribution. Narrow, low preparation temperature effect

Inactive Publication Date: 2019-01-01
PINGDINGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 polypyrrole/metal-modified Sn3O4 nano composite photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) get 1mmol analytically pure stannous octoate (C 16 h 30 o 4 Sn) and 0.6mmol of acetic acid (CH 3 COOH), fully dissolved in 2mL of absolute ethanol, and then sequentially added 4mmol of sodium sorbate, 0.5mmol of phytic acid and 10mL of deionized water, the whole process was in an ice-salt bath of sodium chloride and crushed ice at -20°C Continue to use constant temperature magnetic stirring to obtain solution A evenly;

[0031] 2) get 0.05mmol analytically pure chloroplatinic acid (H 2 PtCl 6 ), 1mmol of silver nitrate (AgNO 3 ), 10mmol of copper nitrate (Cu(NO 3 ) 2 ) and 0.1 mmol of acetic acid (CH 3 COOH) was fully dissolved in 7mL of deionized water, and the whole process was continuously stirred with constant temperature magnetic force in an ice-salt bath of sodium chloride and crushed ice at -20°C to obtain solution B;

[0032] 3) Add solution B dropwise to solution A at a rate of 30 drops / minute, and continuously use constant temperature magnetic stir...

Embodiment 2

[0037] 1) get 1mmol analytically pure stannous octoate (C 16 h 30 o 4 Sn) and 2 mmol of acetic acid (CH 3 COOH), fully dissolved in 11mL of absolute ethanol, then sequentially added 10mmol of sodium sorbate, 3mmol of phytic acid and 15mL of deionized water, the whole process was in an ice salt bath of sodium chloride and crushed ice at -10°C Continuously use constant temperature magnetic stirring to obtain solution A evenly;

[0038] 2) Take 0.5mmol of chloroauric acid (HAuCl 4 ), 1mmol of silver nitrate (AgNO 3 ), 5mmol of copper nitrate (Cu(NO 3 ) 2 ) and 3mmol of acetic acid (CH 3 COOH) was fully dissolved in 10mL of deionized water, and the whole process was continuously stirred with constant temperature magnetic force in an ice-salt bath of sodium chloride and crushed ice at -10°C to obtain solution B;

[0039] 3) Add solution B dropwise to solution A at a rate of 40 drops / min, and continuously use constant temperature magnetic stirring in the ice-salt bath of sod...

Embodiment 3

[0045] 1) get 1mmol analytically pure stannous octoate (C 16 h 30 o 4 Sn) and 4.7mmol of acetic acid (CH 3 COOH), fully dissolved in 17mL of absolute ethanol, then sequentially added 18mmol of sodium sorbate, 6mmol of phytic acid and 26mL of deionized water, the whole process was continued in an ice-salt bath of sodium chloride and crushed ice at 0°C Use constant temperature magnetic stirring to obtain solution A evenly;

[0046] 2) Take 1mmol of chloroauric acid (HAuCl 4 ), 3mmol of silver nitrate (AgNO 3 ) and 6mmol of acetic acid (CH 3 COOH) was fully dissolved in 15mL of deionized water, and the whole process was continuously stirred with constant temperature magnetic force in an ice-salt bath of sodium chloride and crushed ice at 0°C to obtain solution B;

[0047] 3) Add solution B dropwise to solution A at a rate of 60 drops / minute, and continuously use constant temperature magnetic stirring in the ice-salt bath of sodium chloride and crushed ice at 0°C to obtain m...

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Abstract

The invention discloses a preparation method of a polypyrrole/metal-modified Sn3O4 nano composite photocatalytic material. The nano composite material is a composite photocatalyst material obtained byloading and dispersing metal-modified Sn3O4 semiconductor heterojunction on polypyrrole in a chemical bond complexing form; and the metal-modified Sn3O4 is obtained by separately loading metal nano particles of a single-component metal or multi-component alloy of Pt, Au, Ag, Cu and the like having a plasma resonant effect onto Sn3O4. The photo-induced electron-hole separation rate in the photocatalytic reaction can be sufficiently improved by utilizing the visible light photocatalytic oxidation and reduction characteristics of Sn3O4, the plasma resonant effect of metal nano particles, photo conduction and conductivity of polypyrrole as well as the chemical bond heterojunction structure among different components, so that the performance for degrading pollutants in a photocatalytic oxidation and reduction manner and generating hydrogen by photocatalytic and decomposition of water can be improved. The easy-to-mold characteristic of polypyrrole can effectively avoid the recycling difficulty of the powder material.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite photocatalytic material, in particular to a polypyrrole / metal modified Sn 3 o 4 Preparation method of nanocomposite photocatalytic material. Background technique [0002] The development of photocatalytic materials is of great significance for solving the problems of organic pollution and energy shortage. In the field of photocatalysis, metal-supported semiconductor photocatalytic materials have been widely studied due to their high catalytic activity and strong catalyst stability. However, the separation rate of photogenerated carriers in metal-supported semiconductor photocatalytic materials is still not high enough. [0003] Tin oxide is an important n-type wide-bandgap semiconductor, which has excellent photoelectric properties, gas-sensing properties, chemical stability and environmental friendliness, so it is widely used in drug delivery, energy storage, magnetic storage media ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J35/02B01D53/86B01D53/72
CPCB01J31/28B01D53/8668B01D2257/70B01D2259/802B01J35/004B01J35/023
Inventor 杨柳青曹可生白青程国斌侯延民李青彬
Owner PINGDINGSHAN UNIVERSITY
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