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Method for preparing black nano TiO2 through thermal reduction of Mg

A nano and white technology, applied in nanotechnology, titanium oxide/hydroxide, titanium dioxide, etc., can solve the problems of high reaction temperature, high cost, harmful to human body, etc., and achieve simple preparation process, low cost, and enhanced light absorption performance. Effect

Inactive Publication Date: 2021-06-01
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that sodium borohydride inhalation or skin contact in the background technology is harmful to the human body, releases extremely flammable gas when it meets water, and the cost is high, and Al thermal reduction requires dual-temperature zone equipment, the reaction temperature is high, and the cost is high. High technical problem, proposed a method to obtain black nano-TiO by thermal reduction of Mg 2 preparation method

Method used

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  • Method for preparing black nano TiO2 through thermal reduction of Mg
  • Method for preparing black nano TiO2 through thermal reduction of Mg
  • Method for preparing black nano TiO2 through thermal reduction of Mg

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this embodiment, a kind of Mg thermal reduction prepares black nano-TiO 2 method, including the following steps:

[0044] 1) At room temperature, take an agate mortar, take 0.08g magnesium powder, 0.50g commercial nano-TiO 2 Mix, then add 4.00ml of absolute ethanol to grind and mix evenly to obtain mixture A;

[0045] 2) Put the mixture A into a constant temperature drying oven, bake at 80°C for 4 hours, and remove the solvent;

[0046] 3) Put the dried material into a crucible, place it in an argon atmosphere furnace, and calcinate at 500°C for 4 hours at a heating rate and cooling rate of 5°C / min to obtain sample B;

[0047] 4) Take sample B out, add a hydrochloric acid solution with a mass concentration of 8%, soak for 6 hours, repeat 3 times, filter and wash with deionized water 4 times;

[0048] 5) Put the washed sample B into a constant temperature drying oven, and bake it at 80°C for 4 hours to obtain black nano-TiO 2 product.

[0049] The prepared black ...

Embodiment 2

[0051] In this embodiment, a kind of Mg thermal reduction prepares black nano-TiO 2 method, including the following steps:

[0052] 1) At room temperature, take an agate mortar, take 0.15g magnesium powder, 0.50g commercial nano-TiO 2 Mix, add 5.00ml of absolute ethanol, grind and mix evenly to obtain mixture A;

[0053] 2) Put the mixture A into a constant temperature drying oven, bake at 90°C for 4 hours, and remove the solvent;

[0054] 3) Put the dried material into a crucible, place it in an argon atmosphere furnace, and calcinate at 600°C for 4 hours at a heating rate and a cooling rate of 5°C / min to obtain sample B;

[0055] 4) Take sample B out, add a hydrochloric acid solution with a mass concentration of 8%, soak for 6 hours, repeat 4 times, filter with deionized water, and wash 4 times;

[0056] 5) Put it into a constant temperature drying oven and dry it at 70°C for 6 hours to obtain black nano-TiO 2 product.

[0057] The prepared black nano-TiO was obtained b...

Embodiment 3

[0059] In this embodiment, a kind of Mg thermal reduction prepares black nano-TiO 2 method, including the following steps:

[0060] 1) At room temperature, take an agate mortar, take 0.23g magnesium powder, 0.50g commercial nano-TiO 2 Mix, add 8.00ml of absolute ethanol, grind and mix evenly to obtain mixture A;

[0061] 2) Put the mixture A into a constant temperature drying oven, bake at 100°C for 4 hours, and remove the solvent;

[0062] 3) Put the dried material into a crucible, place it in an argon atmosphere furnace, set the heating rate and cooling rate at 5°C / min, and calcinate at 550°C for 4h to obtain sample B;

[0063] 4) Take sample B out, add a hydrochloric acid solution with a mass concentration of 8%, soak for 6 hours, repeat 3 times, filter and wash with deionized water 4 times;

[0064] 5) Put the washed sample B into a constant temperature drying oven, and bake it at 80°C for 6 hours to obtain black nano-TiO 2 product.

[0065] The prepared black nano-Ti...

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Abstract

The invention belongs to the technical field of preparation of inorganic functional materials, and discloses a method for preparing black nano TiO2 through thermal reduction of Mg, which is characterized by comprising the following steps of: (1) mixing magnesium powder and white nano TiO2 at room temperature, adding absolute ethyl alcohol, grinding and uniformly mixing to obtain a mixture A; (2) drying the mixture A, and placing the mixture A in an atmosphere furnace for calcination reaction to obtain a sample B; and (3) taking out the sample B, adding an acid solution for soaking, carrying out suction filtration, washing and drying to obtain the black nano TiO2. The black nano TiO2 is prepared through thermal reduction, metal Mg powder is used, the cost is low, and large-scale production is facilitated. A heating device used in the invention is simple and convenient, the preparation process is simple, batch production is easy, the absorption spectrum of the prepared black nano TiO2 is expanded to visible and infrared regions, and the light absorption performance is remarkably enhanced.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and in particular relates to the preparation of black nano-TiO by thermal reduction of Mg 2 Methods. Background technique [0002] In recent years, in the face of global problems such as energy crisis and environmental pollution caused by the depletion of fossil fuels, people's demand for new energy is increasing. Hydrogen energy, because of its cleanness and renewable energy, is regarded as one of the most promising and research-worthy energy sources. Among them, through sunlight, using nano-TiO 2 The application of photocatalytic hydrogen production has attracted extensive attention. However, nano-TiO 2 The application in industry is still limited, the main reasons are: 1) Nano TiO 2 The bandgap width is large, and only ultraviolet light can excite electronic transitions in sunlight, and ultraviolet light accounts for less than 5% of sunlight, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047B82Y40/00
CPCB82Y40/00C01G23/08C01P2002/72C01P2002/84C01P2004/04C01P2004/64
Inventor 王向东阴倩倩潘程高敏李骁勇贾怡红
Owner XI AN JIAOTONG UNIV
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