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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  • Description
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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 pro

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

Examples

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Example Embodiment

[0044] Example 1

[0045] 1. According to the ratio of 50% Al at atomic percentage and the rest is Ti, put the prepared aluminum and titanium metal blocks into the melting furnace and heat them to a molten state. After sufficient stirring, they are alloyed and melted with argon. The liquid is quickly blown out under a pressure of 0.1MPa, and it solidifies quickly on a high-speed rotating copper roller, and the cooling rate is 10 4 K / s, to obtain a continuous alloy ribbon 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 put 0.5g of the obtained Al-Ti alloy ribbon in the NaOH solution for dealloying treatment, control the reaction temperature to 50℃, and react for 4 hours after the alloy ribbon It turns from black to white, and finishes dealloying. The product is collected, rinsed repeatedly with distilled water to neutrality, and stored in a vacuum container, which is titanate.

[0047] 3. Take 0.2...

Example Embodiment

[0049] Example 2

[0050] 1. Weigh pure aluminum and pure titanium metal blocks (purity ≥99.5wt%) according to atomic percentage of 90% aluminum and 10% titanium, heat them to a molten state, and then alloy them after sufficient stirring. Use argon to melt the The liquid is blown out quickly under a pressure of 0.1MPa, and it solidifies quickly on a high-speed rotating copper roller, and the cooling rate is 10 4 K / s, to obtain a continuous Al-Ti alloy thin 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 put 0.5g of the obtained Al-Ti alloy ribbon in the NaOH solution for dealloying treatment, control the reaction temperature to 50℃, and complete the dealloying after reacting for 5 hours , Collect the product after the reaction, rinse it repeatedly with distilled water to neutrality, and store it in a vacuum container, which is titanate. The SEM picture of the resulting product is as figur...

Example Embodiment

[0052] Example 3

[0053] 1. Weigh pure aluminum and pure titanium metal blocks (purity ≥99.5wt%) according to atomic percentage of 90% aluminum and 10% titanium, heat them to a molten state, and then alloy them after sufficient stirring. Use argon to melt the The liquid is blown out quickly under a pressure of 0.1MPa, and it solidifies quickly on a high-speed rotating copper roller, and the cooling rate is 10 3 K / s, to obtain a continuous Al-Ti alloy thin 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 put 0.5g of the obtained Al-Ti alloy ribbon in NaOH solution for dealloying treatment, control the reaction temperature to 50℃, and complete dealloying after 24 hours of reaction , Collect the product after the reaction, rinse it repeatedly with distilled water to neutrality, 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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