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Visible light photocatalyst loading titanium dioxide nanotube electrode as well as preparation method and application thereof

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

Active Publication Date: 2018-02-02
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TiO 2 Less efficient use of visible light, which accounts for most of the solar spectrum
In addition, TiO 2 Photogenerated charges and holes generated under light are easy to recombine inside the crystal, resulting in low quantum efficiency.
These two issues limit the TiO 2 application in practice

Method used

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  • Visible light photocatalyst loading titanium dioxide nanotube electrode as well as preparation method and application thereof
  • Visible light photocatalyst loading titanium dioxide nanotube electrode as well as preparation method and application thereof
  • Visible light photocatalyst loading titanium dioxide nanotube 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 silver phosphate and molybdenum disulfide co-supported titania nanotube electrode

[0025] (1) 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 deionized water were dissolved in 78ml ethylene glycol (NH 4 The concentration of F is 2.5g / L), obtains the electrolytic solution of anodic oxidation. 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 e...

Embodiment 2

[0028] Example 2 Preparation of titanium dioxide nanotube electrode supported by silver phosphate and molybdenum disulfide as a visible light catalyst

[0029] (1) Preparation of solution: 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 80ml of ethylene glycol to obtain an anodized electrolyte; 0.01g of ammonium tetrathiomolybdate and 0.02g of anhydrous sodium sulfate were dissolved in 40ml of deionized water, and nitrogen gas was continuously passed for 10 -20 minutes, get rid of dissolved oxygen to obtain electrodeposition electrolyte; take 0.02g of silver nitrate and dissolve it in 20ml deionized water to obtain silver nitrate solution, take 0.01g of sodium dihydrogen phosphate and dissolve it in 20ml of deionized water to obtain sodium dihydrogen phosphate solution.

[0030] (2) Preparation of titanium dioxide nanotube array electrodes: the titanium sheets were polishe...

Embodiment 3

[0033] Example 3 Preparation of visible light catalyst molybdenum disulfide supported titanium dioxide nanotube electrode

[0034] (1) Preparation of solution: take 10mlHF and 40mlHNO 3 Dissolve in 50ml deionized water to obtain a mixed acid solution; take 0.5g NH 4 F and 2ml of deionized water were dissolved in 80ml of ethylene glycol to obtain an anodized electrolyte; 0.02g of ammonium tetrathiomolybdate and 0.16g of anhydrous sodium sulfate were dissolved in 50ml of deionized water, and nitrogen gas was continuously passed for 10- For 20 minutes, remove dissolved oxygen to obtain an electrodeposition electrolyte; dissolve 0.2 g of silver nitrate in 20 ml of deionized water to obtain a silver nitrate solution, and dissolve 0.1 g of sodium dihydrogen phosphate in 20 ml of deionized water to obtain a solution of sodium dihydrogen phosphate .

[0035] (2) Preparation of titanium dioxide nanotube array electrodes: the titanium sheets were polished to smooth with sandpaper of d...

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Abstract

The invention discloses a visible light photocatalyst silver phosphate and molybdenum disulfide joint loading titanium dioxide nanotube electrode as well as a preparation method and application thereof. The visible light photocatalyst silver phosphate and molybdenum disulfide joint loading titanium dioxide nanotube electrode prepared by the invention has obvious visible light absorption performance and simultaneously has an obvious light current response. The visible light photocatalyst silver phosphate and molybdenum disulfide joint loading titanium dioxide nanotube electrode prepared by thepreparation method disclosed by the invention is capable of degrading waste water containing antibiotics and shows good visible light photoelectrocatalysis activity. The visible light photocatalyst silver phosphate and molybdenum disulfide joint loading titanium dioxide nanotube electrode has the beneficial effects of simple technology, high degradation efficiency for waste water containing antibiotics in a visible light range, high practical value and good application prospect and can be used for large-scale industrial production, and the catalyst can be easily recovered.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis in environmental governance, and relates to a visible light photocatalyst loaded titanium dioxide nanotube electrode and its preparation method and application, in particular to a visible light photocatalyst silver phosphate and molybdenum disulfide jointly loaded titanium dioxide nanotube electrode And its preparation method and application. Background technique [0002] Antibiotics are among the largest and most widely used drugs in the world. In my country, about 210,000 tons of antibiotics are widely used in livestock and poultry breeding and medical industries every year. However, most antibiotic drugs cannot be completely metabolized in human and animal bodies, and are excreted in the form of prototype and active metabolites through feces. Long-term exposure to antibiotics in the water environment will cause aquatic organisms to exhibit chronic poisoning effects; polluted drinking w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J37/34B01J37/02C02F1/30C02F101/30
CPCC02F1/30B01J27/19B01J37/0242B01J37/348C02F2305/10C02F2101/30B01J35/23B01J35/39
Inventor 滕伟王有梅唐玉斌
Owner JIANGSU UNIV OF SCI & TECH
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