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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 photocatalyst, which solves the problem of existing TiO 2 Problems of high energy consumption and poor visible light catalytic effect in the preparation method of nanotube arrays

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

Experimental program
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Effect test

Embodiment 1

[0050] Example 1: Iron ion doped TiO 2 The preparation method of nanotube array photocatalyst comprises the following steps:

[0051] S1, TiO 2 Fabrication of nanotube arrays

[0052] Preparation of Amorphous TiO by Electrochemical Anodic Oxidation 2 Nanotube arrays, specifically as follows:

[0053] S11, the high-purity titanium sheet 22 with a purity of 99.99% treated by the chemical polishing solution is ultrasonically cleaned in acetone, absolute ethanol and deionized water for 15 minutes by an ultrasonic cleaning device, and dried for use;

[0054] S12, using 0.4wt% ammonium fluoride as a solute, and a mixture of glycerol and deionized water with a volume ratio of 98:2 as a solvent to prepare an organic fluorine-containing electrolyte;

[0055] S13, under the condition of 55V DC voltage, the titanium sheet 22 after cleaning and drying is used as the anode, the platinum electrode with the same area as the titanium sheet 22 is used as the cathode, and the organic fluori...

Embodiment 2

[0082] Example 2: Iron ion doping TiO 2 The difference between the preparation method of the nanotube array photocatalyst and Example 1 is that it comprises the following steps:

[0083] S1, TiO 2 Fabrication of nanotube arrays

[0084] Preparation of Amorphous TiO by Electrochemical Anodic Oxidation 2 Nanotube arrays, specifically as follows:

[0085] S11, the high-purity titanium sheet 22 with a purity of 99.7% treated by the chemical polishing solution is ultrasonically cleaned in acetone, absolute ethanol and deionized water for 5 minutes by an ultrasonic cleaning device, and dried for use;

[0086] S12, using 0.2wt% sodium fluoride as a solute, and a mixture of ethylene glycol and deionized water with a volume ratio of 98:2 as a solvent to prepare an organic fluorine-containing electrolyte;

[0087] S13. Under the condition of 50V DC voltage, the cleaned and dried titanium sheet 22 is used as the anode, the platinum electrode with the same area as the titanium sheet 2...

Embodiment 3

[0095] Example 3: Iron ion doped TiO 2 The difference between the preparation method of the nanotube array photocatalyst and Example 1 is that it comprises the following steps:

[0096] S1, TiO 2 Fabrication of nanotube arrays

[0097] Preparation of Amorphous TiO by Electrochemical Anodic Oxidation 2 Nanotube arrays, specifically as follows:

[0098] S11. The high-purity titanium sheet 22 with a purity of 99.999% treated by the chemical polishing solution is ultrasonically cleaned in acetone, absolute ethanol and deionized water for 25 minutes by an ultrasonic cleaning device, and dried for use;

[0099] S12, using 0.5wt% ammonium fluoride as a solute, and a mixture of glycerol and deionized water with a volume ratio of 98:2 as a solvent to prepare an organic fluorine-containing electrolyte;

[0100] S13. Under the condition of 60V DC voltage, the cleaned and dried titanium sheet 22 is used as the anode, the platinum electrode with the same area as the titanium sheet 22 i...

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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
CPCB01J23/745B01J21/063C02F1/30C02F2305/10C02F2101/30B01J35/39
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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