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Method for preparing titanate, anatase TiO2 and AgCl/Ag/TiO2 composite material

A composite material and titanate technology, applied in chemical instruments and methods, titanates, titanium compounds, etc., can solve the problems of complex preparation process, low product yield, and high cost, and achieve simple operation process, high yield, and stability. good effect

Inactive Publication Date: 2015-05-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, the synthesis of anatase TiO 2 and AgCl / Ag / TiO 2 Composite materials all require a high-temperature calcination process, which consumes a lot of energy, and the output of the product is low, the preparation process is complicated, and the cost is high

Method used

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  • Method for preparing titanate, anatase TiO2 and AgCl/Ag/TiO2 composite material
  • Method for preparing titanate, anatase TiO2 and AgCl/Ag/TiO2 composite material
  • Method for preparing titanate, anatase TiO2 and AgCl/Ag/TiO2 composite material

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Experimental program
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Effect test

Embodiment 1

[0045] 1. According to the ratio of 50% Al by atomic percentage, and the rest is Ti, put the prepared aluminum and titanium metal blocks into the smelting furnace and heat them to a molten state. After sufficient stirring to alloy them, use argon to melt them The liquid is blown out quickly under the pressure of 0.1MPa, and solidifies quickly on the high-speed rotating copper roller, and the cooling rate is 10 4 K / s, obtain a continuous alloy thin strip with a thickness of 20-40 microns, a width of 2-5 mm, and a length of 50-20 cm.

[0046] 2. Measure 50ml, 10mol / L NaOH solution, then place 0.5g of the obtained Al—Ti alloy strip in NaOH solution for dealloying treatment, control the reaction temperature at 50°C, and alloy the strip after 4 hours of reaction From black to white, dealloying is completed. The product is collected, washed repeatedly with distilled water until neutral, and stored in a vacuum container, which is titanate.

[0047] 3. Take 0.2 g of the collected ti...

Embodiment 2

[0050] 1. Weigh pure aluminum and pure titanium metal blocks (purity ≥ 99.5wt%) according to the atomic percentage of 90% aluminum and 10% titanium, heat to a molten state, and alloy them after sufficient stirring, and use argon to melt the molten The liquid is blown out rapidly under the pressure of 0.1MPa, and solidifies rapidly on the high-speed rotating copper roller, and the cooling rate is 10 4 K / s to obtain a continuous Al—Ti alloy strip with a thickness of 20-40 microns, a width of 2-5 mm, and a length of 50-20 cm.

[0051] 2. Measure 50ml of 4mol / L NaOH solution, then place 0.5g of the obtained Al—Ti alloy thin strip in NaOH solution for dealloying treatment, control the reaction temperature at 50°C, and complete dealloying after 5 hours of reaction , collect the product after the reaction, wash it repeatedly with distilled water until neutral, and store it in a vacuum container, which is titanate. The SEM picture of the obtained product is as follows figure 1 As sh...

Embodiment 3

[0053] 1. Weigh pure aluminum and pure titanium metal blocks (purity ≥ 99.5wt%) according to the atomic percentage of 90% aluminum and 10% titanium, heat to a molten state, and alloy them after sufficient stirring, and use argon to melt the molten The liquid is blown out rapidly under the pressure of 0.1MPa, and solidifies rapidly on the high-speed rotating copper roller, and the cooling rate is 10 3 K / s to obtain a continuous Al—Ti alloy strip with a thickness of 20-40 microns, a width of 2-5 mm, and a length of 50-20 cm.

[0054] 2. Measure 50ml of 2mol / L NaOH solution, then place 0.5g of the obtained Al—Ti alloy thin strip in NaOH solution for dealloying treatment, control the reaction temperature at 50°C, and complete dealloying after 24 hours of reaction , collect the product after the reaction, wash it repeatedly with distilled water until neutral, and store it in a vacuum container, which is titanate.

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Abstract

The invention discloses a method for preparing a titanate, anatase TiO2 and AgCl / Ag / TiO2 composite material. The method comprises the following steps: melting pure aluminum and copper by heating to obtain molten Al-Ti alloy and preparing an alloy strip from the molten Al-Ti alloy by virtue of a single-roller melt-spinning method; dealloying the alloy strip to titanate; processing titanate with hydrochloric acid to obtain anatase TiO2; and processing TiO2 and AgNO3 under ultraviolet light to obtain AgCl / Ag / TiO2. According to the method, the titanate, TiO2 and AgCl / Ag / TiO2 composite material is prepared at a low temperature for the first time by virtue of the dealloying method, the operation process is simple and convenient and good in repeatability, the hydrothermal process used in the traditional method for preparing titanate and a high-temperature calcination process used in the preparation of TiO2 are avoided and the anatase TiO2 and AgCl / Ag / TiO2 composite material has the advantages of excellent catalytic performance and good stability and has a good application prospect.

Description

technical field [0001] The invention relates to a titanate and an anatase TiO with better photocatalytic effect 2 and AgCl / Ag / TiO 2 The invention relates to a preparation method of a composite material, which belongs to the technical field of photocatalytic material preparation. Background technique [0002] Titanate is a kind of preparation TiO 2 An important precursor of Li, which is a good Li + The battery anode material has good ion exchange performance. The traditional methods for preparing titanate include high-temperature solid-phase synthesis, chemical co-precipitation, hydrothermal method, and sol-gel method. These methods require higher temperature and precise control of the solution when preparing titanate, which is difficult to synthesize at room temperature. [0003] Titanium dioxide is an inorganic substance, non-toxic, odorless, non-irritating, good thermal stability, non-decomposing, and non-volatile. It has three crystal forms: brookite, anatase and ruti...

Claims

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Application Information

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IPC IPC(8): C01G23/00C01G23/047B01J27/135
CPCC01G23/003B01J27/10C01G23/053C01P2002/72C01P2002/84C01P2004/03
Inventor 王艳赵正峰徐静葛文娟商彩云
Owner UNIV OF JINAN
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