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Sulfur doped titanate nanotube visible light catalyst material and its preparation method

A titanate and nanotube technology, applied in the fields of photocatalysts and material chemistry, can solve the problems that general products and methods do not have suitable structures and methods, and are inconvenient, and achieve improved visible light photocatalytic activity, simple process, and short cycle. Effect

Inactive Publication Date: 2012-10-17
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen that the above-mentioned existing sulfur-doped titanate nanotube visible light catalyst material and its preparation method obviously still have inconvenience and defects in terms of product structure, manufacturing method and use, and need to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve

Method used

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  • Sulfur doped titanate nanotube visible light catalyst material and its preparation method
  • Sulfur doped titanate nanotube visible light catalyst material and its preparation method
  • Sulfur doped titanate nanotube visible light catalyst material and its preparation method

Examples

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Embodiment 1

[0037] Example 1 Preparation and method of sulfur-doped titanate nanotube visible light catalyst

[0038] Weigh 4g titanium disulfide (TiS 2 ), dispersed in 100mL of sodium hydroxide (NaOH) solution with a concentration of 10mol / L, mixed thoroughly, then moved into a stainless steel reactor lined with polytetrafluoroethylene, and reacted hydrothermally at 150°C for 24h; the resulting precipitate was filtered and used Pickling with 1mol / L hydrochloric acid solution, then washing with water until neutral, drying at 100°C for 24 hours, and finally obtaining a light gray powder which is sulfur-doped titanate nanotubes.

Embodiment 2

[0039] Example 2 Preparation and method of sulfur-doped titanate nanotube visible light catalyst

[0040] Weigh 2.5g titanium disulfide (TiS 2 ), dispersed in 100mL of sodium hydroxide (NaOH) solution with a concentration of 10mol / L, mixed thoroughly, then moved into a stainless steel reactor lined with polytetrafluoroethylene, and reacted hydrothermally at 150°C for 24h; the resulting precipitate was filtered and used Pickling with 1mol / L hydrochloric acid solution, then washing with water until neutral, drying at 100°C for 24 hours, and finally obtaining a light gray powder which is sulfur-doped titanate nanotubes.

Embodiment 3

[0041] Example 3 Preparation and method of sulfur-doped titanate nanotube visible light catalyst

[0042] Weigh 0.5g titanium disulfide (TiS 2 ), dispersed in 100mL of sodium hydroxide (NaOH) solution with a concentration of 10mol / L, mixed thoroughly, then moved into a stainless steel reactor lined with polytetrafluoroethylene, and reacted hydrothermally at 150°C for 24h; the resulting precipitate was filtered and used Pickling with 1mol / L hydrochloric acid solution, then washing with water until neutral, drying at 100°C for 24 hours, and finally obtaining a light gray powder which is sulfur-doped titanate nanotubes.

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Abstract

The invention relates to a sulfur doped titanate nanotube visible light catalyst material and its preparation method, a molecular formula of the material is H2-xNaxTi4O9-ySy.H2O (0<=x<=2; 0.01<=y<=0.15). According to the preparation method, titanium disulfide and a sodium hydroxide aqueous solution are taken as raw materials, fully mixed and moved into a stainless steel reaction vessel with a teflon inner liner, a hydrothermal reaction is carried out for 10-48 hours at the temperature of 100-200 DEG C; the obtained sediment is filtered, pickled, then washed to neutrality, dried for 24-48 hours at the temperature of 50-100 DEG C to obtain the light gray powder which is sulfur doped titanate nanotube. The photocatalyst material enables wide absorption in a visible light zone, compared with the catalytic activity of undoped titanium dioxide nano-tube photocatalysts, in an extremely low sulfur doped range, the sulfur doped titanate nanotube photocatalyst presents superior visible light photocatalytic activity, and can be used in the fields of industrial waste water treatment, dye degradation and indoor harmful gas degradation and the like.

Description

technical field [0001] The invention relates to the technical field of photocatalyst and material chemistry, in particular to a sulfur-doped titanate nanotube visible light catalyst and a preparation method thereof. Background technique [0002] TiO 2 As an important semiconductor material, it has attracted much attention in the field of photocatalytic degradation and elimination of environmental pollutants due to its advantages of low cost, non-toxicity, anti-photocorrosion, high catalytic activity, strong oxidation ability, and good stability. However, due to its wide band gap energy (3.0-3.2eV), it can only show excellent photocatalytic activity under near-ultraviolet (380nm) excitation, and the solar energy utilization rate is low. In order to improve the TiO 2 The absorption efficiency of sunlight can be modified by doping. The study shows that the use of metal ion doping to modify TiO 2 The visible light photocatalytic activity of nano-TiO2 can be improved to a cer...

Claims

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Application Information

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IPC IPC(8): B01J27/04B82Y30/00B82Y40/00
Inventor 彭淑鸽吴峰敏王俊岭
Owner HENAN UNIV OF SCI & TECH
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