Visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode as well as preparation method and application thereof

A technology of titanium dioxide and molybdenum disulfide, which is applied in the field of photocatalysis, can solve the problems of low utilization rate of visible light, low quantum efficiency and limitation, and achieve the effects of obvious visible light absorption performance, simple preparation process and easy recovery.

Active Publication Date: 2017-01-11
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the solar spectrum, the main energy is concentrated in the 460nm-600nm wavelength range, so the proportion of ultraviolet light is less than 5%, so TiO 2 Less efficient use of visible light, which accounts for most of th

Method used

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  • Visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode as well as preparation method and application thereof
  • Visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode as well as preparation method and application thereof
  • Visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Preparation of visible light catalyst molybdenum disulfide supported titanium dioxide nanotube electrode

[0025] Take 5ml HF and 20ml HNO 3 Dissolve in 25ml deionized water to obtain a mixed acid solution. The titanium sheets were polished to smooth with sandpaper of different meshes, the electrode sheets were etched in a mixed acid solution, and then ultrasonically cleaned by ethanol and deionized water respectively. Take 0.2g NH 4 F and 1.6ml of deionized water were dissolved in 78ml of ethylene glycol to obtain an anodized electrolyte. The titanium sheet is used as the working electrode, and the platinum sheet electrode is used as the counter electrode, respectively connected to the positive and negative poles of the DC power supply, and slowly pressurized to 60V. After anodic oxidation reaction at room temperature for 30 minutes, the titanium sheet is taken out, and the cleaned electrode is placed in the Naturally air-dried in the air, and calcined the...

Embodiment 2

[0027] Example 2 Preparation of visible light catalyst molybdenum disulfide supported titanium dioxide nanotube electrode

[0028] 1) Solution configuration: take 1mlHF and 4mlHNO 3 Dissolve in 5ml deionized water to obtain a mixed acid solution; take 0.1gNH 4 F and 0.5ml of deionized water were dissolved in 70ml of ethylene glycol to obtain an anodic oxidation electrolyte; 0.01g of ammonium tetrathiomolybdate and 0.05g of anhydrous sodium sulfate were dissolved in 40ml of deionized water, and nitrogen gas was continued for 10 -20 minutes, get rid of dissolved oxygen, and obtain electrodeposited electrolyte;

[0029] 2) Preparation of titania nanotube array electrodes: the titanium sheets were polished to smooth with sandpaper of different meshes, the polished titanium sheets were etched in a mixed acid solution, and then ultrasonically cleaned by ethanol and deionized water respectively, and then In the anodized electrolyte, the ultrasonically cleaned titanium sheet is used...

Embodiment 3

[0031] Example 3 Preparation of visible light catalyst molybdenum disulfide supported titanium dioxide nanotube electrode

[0032] 1) Solution configuration: take 10mlHF and 40mlHNO 3 Dissolve in 50ml deionized water to obtain a mixed acid solution; take 0.5gNH 4 F and 2ml of deionized water were dissolved in 90ml of ethylene glycol to obtain an anodized electrolyte; 0.013g of ammonium tetrathiomolybdate and 0.071g of anhydrous sodium sulfate were dissolved in 50ml of deionized water, and nitrogen gas was continuously passed for 10- 20 minutes, get rid of dissolved oxygen, obtain electrodeposition electrolyte;

[0033] 2) Preparation of titania nanotube array electrodes: the titanium sheets were polished to smooth with sandpaper of different meshes, the polished titanium sheets were etched in a mixed acid solution, and then ultrasonically cleaned by ethanol and deionized water respectively, and then In the anodized electrolyte, the ultrasonically cleaned titanium sheet is used...

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Abstract

The invention discloses a visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode as well as a preparation method and application thereof. The visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode prepared in the invention has obvious visible light absorbability, and has an obvious photocurrent response at the same time. The visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode prepared by the method disclosed by the invention shows very good visible light photoelectrocatalysis activity when used for degrading organic dye wastewater. The visible light catalyst molybdenum disulfide loaded titanium dioxide nano-tube electrode disclosed by the invention has the beneficial effects that the process is simple, the catalyst is easy to reclaim, and the electrode can be applied to large-scale industrial production, has a relatively high efficiency of degrading the organic dye wastewater in a visible light range, and has a very high practical value and application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis in environmental treatment, and relates to a preparation method and application of a photocatalyst, in particular to a visible light photocatalyst molybdenum disulfide-loaded titanium dioxide nanotube electrode, a preparation method and application thereof. Background technique [0002] In the 21st century, global environmental pollution and energy crisis have become two major real problems that human beings must face. As a green chemical technology, photocatalysis has become a research hotspot for the removal of refractory persistent organic pollutants in the environment by this method. TiO 2 As the most representative and most promising typical photocatalyst, especially TiO with a one-dimensional ordered structure 2 Nanotube arrays have attracted widespread attention because of their unique ordered array structure, high specific surface area, and better charge transport performance. Ho...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/461B01J27/051C02F101/30
Inventor 滕伟王有梅唐玉斌
Owner JIANGSU UNIV OF SCI & TECH
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