Preparation method of iron ion doped TiO2 nanotube array photocatalyst

A nanotube array, photocatalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, catalyst carriers, etc., can solve the problems of poor visible light catalysis effect and high energy consumption, and achieve improved The effect of photocatalytic reaction activity, low energy consumption, and enhanced electronic conductivity

Pending Publication Date: 2021-04-09
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an iron ion doped TiO 2 Preparation method of nanotube array photoca

Method used

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  • Preparation method of iron ion doped TiO2 nanotube array photocatalyst
  • Preparation method of iron ion doped TiO2 nanotube array photocatalyst
  • Preparation method of iron ion doped TiO2 nanotube array photocatalyst

Examples

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Example Embodiment

[0050]Example 1: Iron ion doped TiO2Preparation of nanotube array photocatalysts, including the following steps:

[0051]S1, TIO2Preparation of nanotube arrays

[0052]Using electrochemical anode oxidation method to prepare an amorphous TiO2The nanotube array is as follows:

[0053]S11, the purity of the chemically polished liquid is 99.99% of the high purity titanium sheet 22, sequentially washed in acetone, anhydrous ethanol and deionized water by ultrasonic cleaning means for 15 min, drying for use;

[0054]S12, with 0.4% by weight of ammonium fluoride as a solute, a mixture of glycerol and deionized water of 98: 2 as a solvent, formulated organic fluorine electrolyte;

[0055]S13, under the condition of 55V DC voltage, the titanium sheet 22 after cleaning and dried, the same area of ​​the titanium sheet is the cathode as the titanium sheet 22, and the organic fluorine-containing electrolyte which is placed in step S12 is a reaction liquid, reaction The temperature is controlled at 25 ° C, the ...

Example Embodiment

[0082]Example 2: Iron ion doped TiO2The method of preparation of nanotube array photocatalysts, and the difference from Embodiment 1, including the following steps:

[0083]S1, TIO2Preparation of nanotube arrays

[0084]Using electrochemical anode oxidation method to prepare an amorphous TiO2The nanotube array is as follows:

[0085]S11, the purity of the chemically polished liquid is 99.7% of the high purity titanium sheet 22, and is sequentially washed in acetone, anhydrous ethanol, and deionized water by ultrasonic cleaning means for 5 min.

[0086]S12, with 0.2% by weight of sodium fluoride as a solute, a mixture of ethylene glycol and deionized water of 98: 2 as a solvent, formulated a fluorine-containing electrolyte;

[0087]S13, under the conditions of 50V DC voltage, the titanium sheet 22 after cleaning and dried, the same area of ​​the titanium film is the cathode as the titanium sheet 22, and the organic fluorine-containing electrolyte which is placed in step S12 is a reaction liquid, re...

Example Embodiment

[0095]Example 3: Iron ion doping TiO2The method of preparation of nanotube array photocatalysts, and the difference from Embodiment 1, including the following steps:

[0096]S1, TIO2Preparation of nanotube arrays

[0097]Using electrochemical anode oxidation method to prepare an amorphous TiO2The nanotube array is as follows:

[0098]S11, the purity of the chemically polished liquid is 99.999% high purity titanium sheet 22, and the ultrasonic cleaning device is sequentially washed in acetone, anhydrous ethanol and deionized water, and drying for use;

[0099]S12, with 0.5% by weight of ammonium fluoride as a solute, a volume ratio of 98: 2, a propylene glycol, and a mixture of deionized water as a solvent, formulated organic fluorine electrolyte;

[0100]S13, under the conditions of 60V DC voltage, the titanium sheet 22 after cleaning and dried, the same area of ​​the platinum electrodes as the titanium sheet 22 is the cathode, and the organic fluorine-containing electrolyte which is placed in ste...

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Abstract

The invention discloses a preparation method of an iron ion doped TiO2 nanotube array photocatalyst, and belongs to the technical field of photocatalysts.The preparation method comprises the following steps: S1, preparing a TiO2 nanotube array; s2, preparing an iron salt precursor solution: preparing iron salt percursor solution by taking inorganic iron salt as a solute and deionized water as a solvent; s3, pretreatment of the TiO2 nanotube array: soaking the amorphous TiO2 nanotube array in absolute ethyl alcohol, and drying the amorphous TiO2 nanotube array; and S4, preparation of the iron ion doped TiO2 nanotube array: soaking the TiO2 nanotube array in an iron salt precursor solution to dissolve and crystallize the TiO2 nanotube array, taking out the TiO2 nanotube array, cleaning the TiO2 nanotube array, and naturally drying the TiO2 nanotube array to obtain the iron ion doped TiO2 nanotube array visible light photocatalyst. According to the method, crystallization of the TiO2 nanotube array and doping modification of iron metal ions are completed in an aqueous solution at normal pressure and the temperature lower than 100 DEG C, and the electron conduction capacity of the TiO2 nanotube array is enhanced.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, more specifically, it relates to an iron ion doped TiO 2 Preparation method of nanotube array photocatalyst. Background technique [0002] TiO 2 It can directly use solar energy to oxidize and remove pollutants, and the cost is low. It is considered to be one of the most potential semiconductor photocatalysts. TiO 2 Nanotube arrays (TNTs) have a top-down three-dimensional hollow structure and are highly ordered, compared with other TiO 2 Nanomaterials have larger specific surface area and stronger adsorption capacity, which can provide more active sites for reactions. [0003] TiO prepared by anodic oxidation 2 The nanotube array is firmly combined with the titanium substrate, which avoids the problem of separation and recovery of powder materials, and is a method with great large-scale application prospects. However, TiO 2 The nanotube array also has inherent defects, its forbidden ...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J21/06B01J32/00C02F1/30C02F101/30
CPCB01J23/745B01J21/063B01J35/004C02F1/30C02F2305/10C02F2101/30
Inventor 欧安琪罗洁吴智君吴志平刘慎刘佳伟刘玉琪
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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