A kind of preparation method of platinum-modified titanium dioxide nanowire filter membrane

A titanium dioxide and nanowire technology is applied in the field of preparation of platinum-modified titanium dioxide nanowire filter membranes to achieve the effects of improving dispersion degree, good toughness and catalytic activity, and reducing catalytic temperature

Active Publication Date: 2022-06-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using TiO 2 A direct paper-making method has not been reported

Method used

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  • A kind of preparation method of platinum-modified titanium dioxide nanowire filter membrane
  • A kind of preparation method of platinum-modified titanium dioxide nanowire filter membrane
  • A kind of preparation method of platinum-modified titanium dioxide nanowire filter membrane

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Embodiment 1

[0037] A method for preparing a platinum-modified titanium dioxide nanowire filter membrane, comprising the following steps:

[0038] 1) Mix 2ml of tetrabutyl titanate, 0.3g of polyvinylpyrrolidone, 3.5ml of acetic acid, and 3.5ml of ethanol and stir evenly, add it to 30ml of water dissolved in 10g of sodium hydroxide, put it into the reaction kettle, and stir in an oil bath at 180°C for 14h. After the reaction, after the reaction kettle was cooled to room temperature, the obtained hydrothermal solid product (about 0.835g) was filtered and washed until the pH was neutral, poured into 300ml, 0.1mol / L of hydrochloric acid for ion exchange for 48h, and then Filter and wash to neutrality to obtain titanium-containing nanowire materials;

[0039] Dissolve 1g of chloroplatinic acid hexahydrate in 100ml of deionized water, add 1ml of chloroplatinic acid aqueous solution to the above-mentioned titanium-containing nanowire material (about 0.576g), then add 5ml of methanol, 100ml of dei...

Embodiment 2

[0042] A preparation method of platinum-modified titanium dioxide nanowire filter membrane, which comprises the following steps:

[0043] 1) Mix 2ml of tetrabutyl titanate, 0.3g of polyvinylpyrrolidone, 3.5ml of acetic acid, and 3.5ml of ethanol and stir evenly, add it to 30ml of water dissolved in 10g of sodium hydroxide, put it into the reaction kettle, and stir in an oil bath at 180°C for 14h. After the reaction, after the reaction kettle was cooled to room temperature, the obtained hydrothermal solid product (about 0.835g) was filtered and washed until the pH was neutral, poured into 300ml, 0.1mol / L of hydrochloric acid for ion exchange for 12h, and then Filter and wash to neutrality to obtain titanium-containing nanowire materials;

[0044] 2) Dissolve 1g of chloroplatinic acid hexahydrate in 100ml of deionized water, add 1ml of chloroplatinic acid aqueous solution to the above-mentioned titanium-containing nanowire material (about 0.576g), then add 5ml of methanol, 100ml...

Embodiment 3

[0047] A preparation method of platinum-modified titanium dioxide nanowire filter membrane, which comprises the following steps:

[0048] 1) Mix and stir 0.65ml of titanium tetrachloride, 0.3g of polyvinylpyrrolidone, 3.5ml of acetic acid, and 3.5ml of ethanol, add it to 30ml of water dissolved in 10g of sodium hydroxide, put it into the reaction kettle, and stir in an oil bath at 180°C for 14h. After the reaction, after the reaction kettle was cooled to room temperature, the obtained hydrothermal solid product (about 0.835g) was filtered and washed until the pH was neutral, poured into 300ml, 0.1mol / L of hydrochloric acid for ion exchange for 48h, and then Filter and wash to neutrality to obtain titanium-containing nanowire materials;

[0049] 2) Dissolve 1g of chloroplatinic acid in 100ml of deionized water, add 1ml of chloroplatinic acid aqueous solution to the above-mentioned titanium-containing nanowire material (about 0.576g), then add 5ml of methanol, 100ml of deionized...

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Abstract

The invention relates to a preparation method of a platinum-modified titanium dioxide nanowire filter membrane, which comprises the following steps: 1) mixing and stirring a titanium precursor, a high polymer surfactant, an organic acid and an organic solvent, and then dissolving it to a high concentration A hydrothermal reaction is carried out in an alkaline solution, and the reaction product is subjected to an ion exchange reaction in an acidic solution to prepare a titanium-containing nanowire material; 2) adding a platinum precursor, a hole capture agent and water to the titanium-containing nanowire material obtained in step 1) Light deposition is carried out, and then the platinum-modified titanium dioxide nanowire filter membrane is obtained after filtering and washing. The raw material of the present invention is simple and easy to obtain, and the titanium precursor is used as the raw material, and the process is simple through photodeposition of platinum-modified titanium dioxide nanowires, and the obtained platinum-modified titanium dioxide nanowire filter membrane not only has a higher photocatalytic ability It also has a very significant thermal catalytic effect.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and particularly relates to a preparation method of a platinum-modified titanium dioxide nanowire filter membrane. Background technique [0002] Formaldehyde (HCHO) is a ubiquitous indoor air pollutant due to its many emission sources, such as furniture, building and decorative materials, and indoor activities such as food cooking. Formaldehyde is a protoplasmic toxic substance, which can cause strong injury to respiratory mucous membranes, eyes and skin, and also cause dizziness and other symptoms. Long-term exposure can also cause cancer. Therefore, reducing the indoor HCHO concentration and protecting the health of residents is a top priority now. The ways to remove and reduce HCHO now mainly include controlling HCHO emission and ensuring environmental ventilation. Many methods are currently studied for removing HCHO, such as adsorption, plasma-assisted oxidation, photocatalytic de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30B01J23/56B01D53/86B01D53/72B01D53/02
CPCY02W10/37
Inventor 刘保顺谢林峰
Owner WUHAN UNIV OF TECH
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