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Preparation method of Ru-Pd bimetal-supported TiO2 nanotube photocatalyst and application thereof

A titanium dioxide and photocatalyst technology, applied in the field of environmental pollution control, can solve the problem that photoelectric catalytic properties are not better applied, and achieve the effects of improving quantum efficiency, expanding application fields, and large specific surface area

Inactive Publication Date: 2012-09-12
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the photocatalytic properties of ruthenium-palladium / titanium dioxide nanocomposite photocatalysts have not been better applied

Method used

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  • Preparation method of Ru-Pd bimetal-supported TiO2 nanotube photocatalyst and application thereof
  • Preparation method of Ru-Pd bimetal-supported TiO2 nanotube photocatalyst and application thereof
  • Preparation method of Ru-Pd bimetal-supported TiO2 nanotube photocatalyst and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029]A commercially pure titanium sheet with a thickness of about 0.1 mm and a purity of 99.6% was cut into several titanium sheets with a size of 20 mm×40 mm. Grind successively with 240#, 600#, 800#, 1000#, 1500# emery paper until the surface is clean and smooth, then immerse in HF:HNO 3 :H 2 Etched in a mixed solution of O=1:4:5 for 30 seconds, and then placed in an ultrasonic vibration pool and ultrasonically cleaned with ethanol solution and deionized water for 15 minutes respectively. The treated titanium sheets were air-dried naturally for later use. Connect the titanium sheet and the platinum sheet to the positive and negative stages of the DC regulated power supply respectively. The electrolytic solution is 0.2wt% hydrofluoric acid solution, and a 20V DC voltage is applied for 30 minutes of electrolysis. The entire experiment was carried out under constant stirring and the temperature was maintained at 20 °C. During the anodizing process, the surface color of the...

Embodiment 2

[0031] According to the preparation method of the present invention in Example 1, only the electrolytic solution is replaced with hydrofluoric acid with a concentration of 0.05 wt%, to obtain a ruthenium-palladium / titanium dioxide nanocomposite photocatalyst.

Embodiment 3

[0033] According to the preparation method of the present invention in Example 1, only the electrolytic solution was replaced with hydrofluoric acid with a concentration of 1.0 wt%, to obtain a ruthenium-palladium / titanium dioxide nanocomposite photocatalyst.

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Abstract

The invention discloses a preparation method of a Ru-Pd / TiO2 nanotube complex photocatalyst and the application thereof, and belongs to the technical field of environment pollution control. When the photocatalyst is prepared, an electrochemical oxidation reaction is performed under the action of hydrofluoric acid with the concentration of 0.2wt percent so as to prepare a TiO2 nanotube electrode firstly, the pipe diameter of a nanotube is about 100 nm, and the thickness of a pipe wall is about 20 nm. Then an impregnating electrodeposition method is adopted to prepare the Ru-Pd / TiO2 nano complex photocatalyst. The method for preparing the complex photocatalyst has the advantages of simple synthesis, stable property, synthesis process belonging to the green chemistry and the like. The composition of Ru and Pd improves the separating efficiency of photoinduced electrons-hole pairs of the TiO2 nanotube electrode, further improves the photocatalytic reduction degradation efficiency of organic pollutants, and has very high utility value and a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a preparation method of a photocatalytic reduction dechlorination catalyst, in particular to a preparation method and application of a ruthenium-palladium / titanium dioxide nanocomposite photocatalyst. Background technique [0002] With the development of global social economy, pentachlorophenol (PCP) is widely used in wood preservatives, rust inhibitors, herbicides, fungicides and paper industry. As a representative of typical persistent organic pollutants (POPs), due to its long-term persistence, bioaccumulation, semi-volatility and high toxicity in the environment, it has "three effects" (carcinogenic, teratogenic, mutagenic) or endocrine disrupting properties, thus attracting widespread public attention and becoming a research hotspot in the field of environmental science in international institutions and developed countries. Due to its stable chemical p...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J37/34B01D53/86B01D53/70C02F1/30C02F1/70C02F101/34C02F101/36
CPCY02C20/30
Inventor 李新勇谭敬
Owner DALIAN UNIV OF TECH
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