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Indium tin oxide compound and its preparation method and photocatalytic application

A technology of indium tin oxide and compounds, which is applied in the fields of indium tin oxide compounds and its preparation and photocatalysis application, and can solve the problems of pressing the door, harsh preparation and process conditions, etc.

Active Publication Date: 2017-10-03
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the mixed crystal form of the P25 titanium dioxide catalyst, the preparation and process conditions are harsh, and its catalytic ability under ultraviolet light conditions still cannot meet the growing practical needs of people. The development of new photocatalytic materials is still urgent

Method used

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  • Indium tin oxide compound and its preparation method and photocatalytic application
  • Indium tin oxide compound and its preparation method and photocatalytic application
  • Indium tin oxide compound and its preparation method and photocatalytic application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: 0.90SnO 2 :0.10In compound

[0034] Taking stannous chloride, indium chloride and potassium hydroxide as starting materials, weigh 4.50 mmol of stannous chloride and 0.5 mmol of indium chloride, dissolve them in 70 mL of deionized water, and stir for 10 minutes to make It mixes evenly; Add 10 mmol potassium hydroxide to the above-mentioned mixed solution, continue stirring for 30 minutes to obtain a clear solution; Put the clear solution into a hydrothermal reaction kettle for heat treatment, control the temperature at 160 o C, continuous reaction for 12 hours, and then the reacted solution was separated to obtain a precipitate; the obtained precipitate was washed 10 times with deionization, and dried at 60°C for 4 hours to obtain the final product.

[0035] The plasma emission spectrum of the synthesized product shows the actual composition and theoretical composition of indium tin oxide material 0.90SnO 2 :0.10In close. figure 1 The 0.90SnO prepared for ...

Embodiment 2

[0037] Example 2: 0.80SnO 2 :0.20In compound

[0038]Taking stannous chloride, indium chloride, and potassium hydroxide as starting materials, weigh 8 mmol of stannous chloride and 2 mmol of indium chloride, dissolve them in 70 mL of deionized water, and stir for 10 minutes to make It mixes evenly; Add 10mmol ammoniacal liquor to above-mentioned mixed solution, continue stirring for 30 minutes to obtain clear solution; Clear solution is put into hydrothermal reaction kettle and carry out heat treatment, control temperature 180 o C, continuous reaction for 24 hours, and then the reacted solution was separated to obtain a precipitate; the obtained precipitate was washed 10 times with deionization, and dried at 60°C for 4 hours to obtain the final product.

[0039] The plasma emission spectrum of the synthesized product shows the actual composition and theoretical composition of indium tin oxide material 0.80SnO 2 :0.20In close. Figure 5 0.80SnO prepared for this example 2 :...

Embodiment 3

[0041] Example 3: 0.70SnO 2 :0.30In compound

[0042] Using stannous nitrate, indium nitrate, and urea as starting materials, weigh 2.8 mmol of stannous nitrate and 1.2 mmol of indium nitrate, dissolve the two in 70 mL of deionized water, and stir for 10 minutes to mix them evenly; Add 15mmol urea to the mixed solution, and continue to stir for 30 minutes to obtain a clear solution; the clear solution is put into a hydrothermal reactor for heat treatment, and the temperature is controlled at 100 o C, continuous reaction for 48 hours, and then the reacted solution was separated to obtain a precipitate; the obtained precipitate was washed 10 times with deionization, and dried at 60°C for 4 hours to obtain the final product.

[0043] The plasma emission spectrum of the synthesized product shows the actual composition and theoretical composition of indium tin oxide material 0.70SnO 2 :0.30In close. Figure 9 0.70SnO prepared for this example 2 : The X-ray diffraction pattern o...

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Abstract

The invention relates to an indium tin oxide compound, a preparation method thereof and photocatalytic application in the field of catalysis. The chemical composition of the indium tin oxide compound provided by the present invention is (1-x)SnO2:xIn, x=0.005-0.5, and the particle size distribution is 10-1000 nm. The application of the indium tin oxide compound as an ultraviolet photocatalytic material is suitable for degrading organic dyes or carbon, nitrogen, and sulfur oxides.

Description

technical field [0001] The invention relates to an indium tin oxide compound in the field of catalysis and its preparation method and photocatalytic application Background technique [0002] In 1972, Fujishima and Honda reported for the first time that water could be decomposed on titanium dioxide electrodes to produce hydrogen and oxygen under ultraviolet light irradiation, which opened the prelude to the application research of photocatalysis. Since then, people have started including TiO 2 A lot of research work has been done on the photocatalytic material system, including exploring the photocatalytic mechanism, improving photocatalytic efficiency, and expanding its application fields. In 1976, Carey et al. found that under ultraviolet light, TiO 2 It can dechlorinate the refractory organic compound polychlorinated biphenyls, which opens a new chapter in the application of semiconductor photocatalysis in environmental pollution control, making environmental photocataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02C01G15/00B01J23/14
Inventor 李广社赵明磊李莉萍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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