Polyethyleneglycol-400 modified TiO2 powder and preparation method

Abstract

The invention relates to polyethylene glycol-400 modified nano TiO2 powder and a preparation method thereof. The preparation method is characterized in that a solution for preparing TiO2 comprises the following compositions by volume percentage: 65.2 percent of anhydrous alcohol, 25.8 percent of butyl titanate, 4.5 percent of analytically pure concentrated nitric acid and 4.5 percent of water, and 7.58 to 75.8 milligrams of polyethylene glycol-400 modifier is added into each 1 liter of the solution for preparing the TiO2. The preparation method uses an easily realized method with reasonable price to improve the photocatalytic performance of the TiO2, and solves the problems of low photocatalytic efficiency and overhigh modification cost caused by independent use of the TiO2.

Description

technical field

[0001] The invention relates to a modified nano TiO 2 Powder and its preparation method, more specifically a kind of utilization polyethylene glycol-400 to change nano-TiO 2 The structure of the modified nano-TiO makes it have greater degradation efficiency and is easier to popularize and apply 2 Powder and method for its preparation. Background technique

[0002] TiO 2 It is an N-type semiconductor material with stable chemical properties, insoluble in water and dilute acids at room temperature, resistant to light corrosion, and has the advantages of large forbidden band width and high redox potential. Due to the advantages of fast speed, no selectivity, complete degradation and no secondary pollution, semiconductor nano-scale titanium dioxide photocatalytic degradation of pollutants has developed rapidly in the past few decades. The birth of photocatalytic technology provides a new way for sewage treatment. a path full of hope. And TiO 2 Cheap, non-to...

Examples

Embodiment 1

[0030] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0031] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 1g of polyethylene glycol-400 at room temperature to make a mixture D;

[0032] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0033] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the surface modif...

Embodiment 2

[0035] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0036] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 6g of polyethylene glycol-400 at room temperature and mix to make a mixture D;

[0037] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0038] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the sur...

Embodiment 3

[0040] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0041] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 10g of polyethylene glycol-400 at room temperature and mix to make a mixture D;

[0042] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0043] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the su...

technical field

[0001] The invention relates to a modified nano TiO 2 Powder and its preparation method, more specifically a kind of utilization polyethylene glycol-400 to change nano-TiO 2 The structure of the modified nano-TiO makes it have greater degradation efficiency and is easier to popularize and apply 2 Powder and method for its preparation. Background technique

[0002] TiO 2 It is an N-type semiconductor material with stable chemical properties, insoluble in water and dilute acids at room temperature, resistant to light corrosion, and has the advantages of large forbidden band width and high redox potential. Due to the advantages of fast speed, no selectivity, complete degradation and no secondary pollution, semiconductor nano-scale titanium dioxide photocatalytic degradation of pollutants has developed rapidly in the past few decades. The birth of photocatalytic technology provides a new way for sewage treatment. a path full of hope. And TiO 2 Cheap, non-to...

Examples

Embodiment 1

[0030] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0031] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 1g of polyethylene glycol-400 at room temperature to make a mixture D;

[0032] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0033] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the surface modif...

Embodiment 2

[0035] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0036] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 6g of polyethylene glycol-400 at room temperature and mix to make a mixture D;

[0037] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0038] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the sur...

Embodiment 3

[0040] 1. At room temperature, mix 50mL of absolute ethanol and 6mL of analytically pure concentrated nitric acid to form a mixed solution B, and slowly add the mixed solution B dropwise to the rapidly stirred 34mL butyl titanate solution to make a mixed solution C;

[0041] 2. Take 36mL of absolute ethanol, 6mL of distilled water and 10g of polyethylene glycol-400 at room temperature and mix to make a mixture D;

[0042] 3. Slowly add the mixed solution D to the rapidly stirred mixed solution C. After the dropwise addition, continue to stir to make the mixed solution fully react until the solid components in the mixed solution are evenly dispersed in the solution, then stop stirring. Preparation of Polyethylene Glycol-400 Modified TiO 2 Sol;

[0043] 4. The polyethylene glycol-400 modified TiO 2 After the sol is aged, it is first dried in a drying oven at 100°C for 1 to 2 hours for gel aging, and then calcined at a constant temperature of 500°C for 1 hour to complete the su...

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