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Ferrotitanium oxide nano-tube array photoanode, preparation method and applications thereof

A technology of nanotube array and titanium-iron alloy, which is applied in the field of material chemistry, can solve the problems that the activity of composite photocatalysts cannot be effectively exerted and the high specific surface area is reduced, and achieve good application prospects

Inactive Publication Date: 2013-04-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, conventional stuffing doping reduces the TiO 2 The inherent high specific surface area of ​​nanotubes prevents the activity of composite photocatalysts from being effectively exerted

Method used

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  • Ferrotitanium oxide nano-tube array photoanode, preparation method and applications thereof
  • Ferrotitanium oxide nano-tube array photoanode, preparation method and applications thereof
  • Ferrotitanium oxide nano-tube array photoanode, preparation method and applications thereof

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Experimental program
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Effect test

Embodiment 1

[0027] (1) The preparation process and characterization of the titanium-iron alloy oxide nanotube array photoanode, the specific steps are as follows:

[0028]Mix Ti plate (purity 99.9%) and Fe particles (purity 99.99%) in a certain ratio, and under the protection of argon atmosphere, obtain titanium-iron alloy in a high-temperature argon arc melting furnace, and use a wire cutting machine to cut it into 15× The exact mass percentage of Fe in the alloy was determined to be 6% by inductively coupled plasma-atomic emission spectrometry (Optima 2100, Perkin-Elmer) for a sample with a size of 50×1 mm. After the titanium-iron alloy sheet is polished with 100# and 500# sandpaper in turn, it is polished into a mirror surface with metallographic sandpaper, and then ultrasonically cleaned in distilled water and acetone for 15 minutes. At room temperature, the pretreated titanium-iron alloy sheet is used as the anode, the platinum sheet electrode is used as the counter electrode, and th...

Embodiment 2

[0036] A preparation process of a titanium-iron alloy oxide nanotube array photoanode, the specific steps are as follows:

[0037] Mix Ti plate (purity 99.9%) and Fe particles (purity 99.99%) in a certain ratio, and under the protection of argon atmosphere, obtain titanium-iron alloy in a high-temperature argon arc melting furnace, and use a wire cutting machine to cut it into 15× The exact mass percentage of Fe in the alloy was determined to be 4% by inductively coupled plasma-atomic emission spectrometry (Optima2100, Perkin-Elmer) for a sample with a size of 50×1 mm. After polishing the titanium-iron alloy sheet with 100# and 500# sandpaper in turn, polish it into a mirror surface with metallographic sandpaper, and then ultrasonically clean it in distilled water and acetone for 10 minutes respectively. At room temperature, the pretreated titanium-iron alloy sheet is used as the anode, the platinum sheet electrode is used as the counter electrode, the electrode distance is 1c...

Embodiment 3

[0041] The preparation process of the titanium-iron alloy oxide nanotube array photoanode, the specific steps are as follows:

[0042] Mix Ti plate (purity 99.9%) and Fe particles (purity 99.99%) in a certain ratio, and under the protection of argon atmosphere, obtain titanium-iron alloy in a high-temperature argon arc melting furnace, and use a wire cutting machine to cut it into 15× The exact mass percentage of Fe in the alloy was determined to be 6% by inductively coupled plasma-atomic emission spectrometry (Optima 2100, Perkin-Elmer) for a sample with a size of 50×1 mm. After the titanium-iron alloy sheet was polished with 100# and 500# sandpaper in turn, it was polished into a mirror surface with metallographic sandpaper, and then ultrasonically cleaned in distilled water and acetone for 20 minutes each. At room temperature, the pretreated titanium-iron alloy sheet is used as the anode, the platinum sheet electrode is used as the counter electrode, the electrode distance ...

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Abstract

The present invention relates to a ferrotitanium oxide nano-tube array photoanode and a preparation method thereof, wherein the ferrotitanium oxide nano-tube array photoanode can be used for visible photoelectricity catalysis oxidation degradation of dye wastewater. According to the present invention, on a ferrotitanium substrate prepared thourgh a high temperature argon arc melting method, an electrochemical anode oxidation method is adopted to erectly grow a layer of a highly ordered binary oxide nano-tube array photoanode in an in situ manner; compared to the composite photoelectricity catalyst obtained through depositing a narrow band metal oxide in TiO2 nano-tubes in the traditional method, the ferrotitanium oxide nano-tube array photoanode of the present invention has a stable and ordered nano-tube structure and is doped with highly uniform Fe2O3 at a molecular level so as to provide a higher specific surface area, stronger photochemical stability and higher visible photoelectricity catalysis activity compared to the conventional TiO2 and Fe2O3 composite photoelectricity catalyst, and can be used in visible photoelectricity catalysis oxidation degradation of organic dye wastewater; and the electrode preparation process is simple, wherein visible light having the largest proportion in sunlight can be utilized, treatment cost on wastewater photoelectricity catalysis oxidation degradation is expected to be reduced, and wide research and application values are provided.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a highly efficient and stable visible photoelectric catalytic oxidation treatment of dye wastewater, a titanium-iron alloy oxide nanotube array photoanode product. Background technique [0002] Advanced oxidative degradation is one of the important ways to deal with environmental pollutants. As an advanced deep oxidation technology, photocatalytic oxidation has the advantages of strong oxidation ability, high controllability, mild reaction conditions, easy preparation of materials, and no direct secondary pollution. It provides a new way for the treatment of environmental pollution. It is a promising approach and has attracted widespread attention, and the direct and effective use of sunlight to photocatalytically oxidize and degrade environmental pollutants is undoubtedly the development trend in the field of environmental control in the future. The proportion of visible light...

Claims

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Application Information

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IPC IPC(8): C25D11/26C25B11/04C02F1/461C02F1/30C02F1/72
CPCY02W10/37
Inventor 赵国华李明芳田弘毅刘梅川
Owner TONGJI UNIV
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