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Tin bisulfide single-crystal nanosheets selectively absorbing organic dyes, and preparation method thereof

A technology of tin disulfide and organic dyes, which is applied in the fields of nanotechnology, chemical instruments and methods, and inorganic chemistry for materials and surface science. Effect

Inactive Publication Date: 2012-07-04
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses hydrothermally controlled temperatures during heating processes to control various factors such as particle sizes, pores structures, etc., which affect how well it absorbs certain chemical compounds like dyestuffs or photosensitizers (photochromic). These materials are useful in water purification systems that use these nanoparticles to remove harmful substances from contaminated waters through photooxidative reactions between oxygen atoms on the particles' surfaces and organics present thereunder.

Problems solved by technology

This patented technical problem addressed in the patents relates to finding ways to use cheaper materials like copper sulfite instead of expensive ones while maintaining their brightness over time without losing effectiveness due to environmental factors such as light exposures and moisture damage caused by rainwater during outdoor activities. Additionally, studying how these new materials behave with different substrate surfaces may help identify specific chemical groups within them which could have useful uses in various industries including building design, photovoltaics, sensors, displays, and biological studies.

Method used

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  • Tin bisulfide single-crystal nanosheets selectively absorbing organic dyes, and preparation method thereof
  • Tin bisulfide single-crystal nanosheets selectively absorbing organic dyes, and preparation method thereof
  • Tin bisulfide single-crystal nanosheets selectively absorbing organic dyes, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] At room temperature, add 0.87g (2.5mmol) tin tetrachloride pentahydrate and 0.76g (10mmol) thioacetamide into 40mL deionized water, stir until the solution is colorless and clear, then transfer the solution to a 50mL hydrothermal kettle, Seal, place in an oven at a constant temperature of 110°C for 24 hours, cool naturally to room temperature, centrifuge, filter to obtain a brown powder, wash the obtained powder with deionized water and absolute ethanol three times, and dry at 80°C to obtain tin disulfide Sample (SA-110). Its X-ray powder diffraction pattern is as figure 1 As shown, the results show that the sample of Example 1 belongs to the hexagonal phase tin disulfide; its field emission scanning electron microscope picture is as figure 2 As shown, it is shown that it is a nanoparticle of fine size, the size is less than 30nm.

Embodiment 2

[0028] At room temperature, add 0.87g (2.5mmol) tin tetrachloride pentahydrate and 0.76g (10mmol) thioacetamide into 40mL deionized water, stir until the solution is colorless and clear, then transfer the solution to a 50mL hydrothermal kettle, Seal it, place it in an oven at a constant temperature of 160°C for 24 hours, cool naturally to room temperature, centrifuge, filter to obtain a brown powder, wash the obtained powder with deionized water and absolute ethanol three times, and dry at 80°C to obtain tin disulfide Sample (SA-160). Its X-ray powder diffraction spectrum is as figure 1 As shown, the result shows that the sample of embodiment 2 belongs to the hexagonal phase tin disulfide; its field emission scanning electron microscope figure is as image 3 As shown, the particles have formed a hexagonal shape with a size of about 30 nm.

Embodiment 3

[0030] At room temperature, add 0.87g (2.5mmol) tin tetrachloride pentahydrate and 0.76g (10mmol) thioacetamide into 40mL deionized water, stir until the solution is colorless and clear, then transfer the solution to a 50mL hydrothermal kettle, Seal, place in an oven at a constant temperature of 180°C for 24 hours, cool naturally to room temperature, centrifuge, filter to obtain a brown powder, wash the obtained powder with deionized water and absolute ethanol three times, and dry at 80°C to obtain tin disulfide Sample (SA-180). Its X-ray powder diffraction spectrum is as figure 1 As shown, the result shows that the sample of embodiment 3 belongs to hexagonal tin disulfide; its field emission scanning electron microscope picture is as Figure 4 As shown, the particles are hexagonal and about 40 nm in size.

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Abstract

The invention discloses tin bisulfide single-crystal nanosheets selectively absorbing organic dyes, and a preparation method thereof. The hydrothermal temperature and the sulfur source are controlled to modulate the size dimension, specific area and other parameters of the tin bisulfide single-crystal nanosheets. The tin bisulfide single-crystal nanosheets prepared by the invention have selectivity on absorption of different types of organic dyes, can be used for absorbing dye molecules and reducing the concentration of dye wastewater, and can be used as an auxiliary for a photocatalyst to cooperate with the photocatalyst to treat high-concentration dye wastewater.

Description

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Claims

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Application Information

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Owner SHANGHAI NORMAL UNIVERSITY
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