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A kind of preparation method of sulfur indium zinc/barium titanate composite photocatalyst

A technology of indium-zinc sulfide and composite light, which is applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. Recombination probability, low cost, and the effect of extending the photoresponse range

Active Publication Date: 2022-03-15
NANTONG VOCATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there is no report on the synthesis of sulfur indium zinc / barium titanate composite photocatalyst by hydrothermal method

Method used

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  • A kind of preparation method of sulfur indium zinc/barium titanate composite photocatalyst
  • A kind of preparation method of sulfur indium zinc/barium titanate composite photocatalyst
  • A kind of preparation method of sulfur indium zinc/barium titanate composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 2mmol of zinc acetate dihydrate, 4mmol of indium nitrate hydrate, and 16mmol of thioacetamide in a 100mL beaker, add 50mL of absolute ethanol, stir to dissolve, add 0.1g of cetyltrimethylammonium bromide, and continue to sonicate After stirring to form a transparent solution, transfer it to a 100mL polytetrafluoroethylene-lined hydrothermal kettle, add absolute ethanol to 80% of the total capacity, and after hydrothermal reaction at 180°C for 24 hours, the obtained solid is centrifuged, washed with water and alcohol 3 times each, after vacuum drying at 60°C for 24 hours to obtain sulfur indium zinc;

[0030] Weigh 2mL of tetra-n-butyl titanate and dissolve it in 15mL of absolute ethanol, add ammonia solution (V / V% is 50%) drop by drop until the hydrolysis is complete; add 2.78g of barium hydroxide and 50mL of water, and bathe in 90℃ water for 2h Until the barium hydroxide is completely dissolved; continue to add 0.2 g of the above-mentioned sulfur indium zinc, the...

Embodiment 2

[0039] Weigh 2mmol of zinc nitrate hydrate, 4mmol of indium trichloride hydrate and 12mmol of sodium sulfide in a 100mL beaker, add 50mL of absolute ethanol, stir to dissolve, add 0.1g of cetyltrimethylammonium bromide, continue to sonicate, After stirring to form a transparent solution, transfer it to a 100mL polytetrafluoroethylene-lined hydrothermal kettle, add absolute ethanol to 80% of the total capacity, and after hydrothermal reaction at 150°C for 16 hours, the obtained solid is centrifuged, washed with water and alcohol. 3 times, after vacuum drying at 60°C for 24 hours, sulfur indium zinc was obtained;

[0040] Weigh 2mL of tetraisopropyl titanate and dissolve it in 15mL of absolute ethanol, add ammonia solution (V / V% is 50%) drop by drop until the hydrolysis is complete; add 2.78g of barium hydroxide and 50mL of water, and bathe in water at 90°C for 1h Until the barium hydroxide is completely dissolved; continue to add 0.2 g of the above-mentioned sulfur indium zinc,...

Embodiment 3

[0044] Weigh 2mmol of zinc chloride, 4mmol of indium sulfate and 14mmol of thiourea into a 100mL beaker, add 50mL of absolute ethanol, stir to dissolve, add 0.1g of cetyltrimethylammonium bromide, continue ultrasonication and stirring to form a transparent solution Then transfer to a 100mL polytetrafluoroethylene-lined hydrothermal kettle, add absolute ethanol to 80% of the total capacity, and after hydrothermal reaction at 200°C for 8 hours, the obtained solid is centrifuged, washed with water and alcohol for 3 times, 60 After vacuum drying at ℃ for 24 hours, sulfur indium zinc was obtained;

[0045] Weigh 2mL of tetra-n-butyl titanate and dissolve it in 15mL of absolute ethanol, add ammonia solution (V / V% is 50%) drop by drop until the hydrolysis is complete; add 2.78g of barium hydroxide and 50mL of water, and bathe in 90℃ water for 2h Until the barium hydroxide is completely dissolved; continue to add 0.3 g of the above-mentioned sulfur indium zinc, then transfer to a poly...

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Abstract

The invention discloses a preparation method of sulfur indium zinc / barium titanate composite photocatalyst, comprising the following steps: dissolving zinc source, indium source and sulfur source in a solvent in a certain proportion, adding a certain amount of hexadecyltri Methyl ammonium bromide, ultrasonically disperse to form a solution, transfer it to a hydrothermal kettle, and undergo a hydrothermal reaction at 150-200°C to obtain sulfur indium zinc; weigh a certain amount of titanium source and dissolve it in absolute ethanol, and add ammonia drop by drop Aqueous solution until the hydrolysis is complete; add a certain amount of barium hydroxide and sulfur indium zinc, and transfer it to a hydrothermal kettle after a 90°C water bath, and a light yellow solid will be obtained after a hydrothermal reaction at 180‑200°C; after centrifugation, pickling, and water washing, vacuum drying Obtain sulfur indium zinc / barium titanate composite photocatalyst. The method can prepare sulfur indium zinc / barium titanate composite photocatalyst, expand the photoresponse range of barium titanate, improve the light absorption ability, improve the carrier separation ability, reduce the recombination probability of holes-photogenerated electrons, and maximize the photocatalytic activity of the photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of photocatalytic materials, and in particular relates to a preparation method of sulfur indium zinc / barium titanate composite photocatalyst. Background technique [0002] As a ferroelectric compound material, barium titanate has high dielectric constant and low dielectric loss, and is one of the most widely used electronic ceramic raw materials at home and abroad, known as "the pillar of the electronic ceramic industry". Barium titanate has both dielectric, piezoelectric and ferroelectric properties. There is a spontaneous dipole field inside the material, which can effectively separate photogenerated electrons and holes. It is also an important photocatalyst, especially the tetragonal ferroelectric single crystal The carrier lifetime of barium titanate is as long as 0.12s, and it has been successfully applied in the fields of photocatalytic degradation of organic pollutants and photo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J35/00B01J37/10
CPCB01J37/10B01J27/04B01J35/39
Inventor 周杰朱蓓蓓吴斌姜敏黄徽丁邦琴陆小东周道
Owner NANTONG VOCATIONAL COLLEGE
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