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 catalytic activity, saving experimental steps and costs, improving toughness and catalytic activity

Active Publication Date: 2019-06-21
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

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  • Preparation method of platinum modified titanium dioxide nanowire filter membrane
  • Preparation method of platinum modified titanium dioxide nanowire filter membrane
  • Preparation method of platinum modified titanium dioxide nanowire filter membrane

Examples

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Embodiment 1

[0037] A preparation method of platinum modified titanium dioxide nanowire filter membrane, which comprises 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 them evenly, add them to 30ml of water dissolved in 10g of sodium hydroxide, put them into the reactor, and stir for 14h in an oil bath at 180°C. After the reaction is over, after the reactor is cooled to room temperature, the obtained hydrothermal solid product (about 0.835g) is filtered and washed with water until the pH is neutral, and then poured into 300ml, 0.1mol / L hydrochloric acid for ion exchange for 48h, and then Filter and wash to neutrality to obtain titanium-containing nanowire material;

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

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 mix them evenly, add them to 30ml of water dissolved in 10g of sodium hydroxide, put them into the reactor, and stir for 14h in an oil bath at 180°C. After the reaction is over, after the reactor is cooled to room temperature, the obtained hydrothermal solid product (about 0.835g) is filtered and washed with water until the pH is neutral, and then poured into 300ml, 0.1mol / L hydrochloric acid for ion exchange for 12h, and then Filter and wash to neutrality to obtain titanium-containing nanowire material;

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

Embodiment 3

[0047] A method for preparing platinum modified titanium dioxide nanowire filter membrane, which comprises the following steps:

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

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

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Abstract

The invention relates to a preparation method of a platinum modified titanium dioxide nanowire filter membrane. The preparation method comprises the following steps: firstly, uniformly mixing and stirring a titanium precursor, a polymer surfactant, organic acid and an organic solvent; then dissolving a mixture into a high concentration alkaline solution for hydrothermal reaction, enabling a reaction product to carry out ion exchange reaction in an acid solution to prepare a titanium-containing nanowire material; secondly, adding the titanium precursor, a hole trapping agent and water into thetitanium-containing nanowire material obtained in the first step for photodeposition; then filtering and washing to obtain the platinum modified titanium dioxide nanowire filter membrane. According tothe preparation method disclosed by the invention, raw materials are simple and easy to obtain; by taking the titanium precursor as a raw material and modifying the titanium dioxide nanowire throughphotodeposition, the technical process is simple; the obtained platinum modified titanium dioxide nanowire filter membrane has higher photocatalytic capacity and also has significant thermocatalytic effect at room temperature.

Description

Technical field [0001] The invention belongs to the technical field of inorganic materials, and specifically relates to a method for preparing a platinum modified titanium dioxide nanowire filter membrane. Background technique [0002] Formaldehyde (HCHO) is a ubiquitous indoor air pollutant because it has many emission sources, such as furniture, building materials and decoration materials, as well as indoor activities such as food cooking. Formaldehyde is a protoplasmic toxic substance, which can cause severe damage to respiratory mucous membranes, eyes and skin and cause dizziness and other symptoms. Long-term exposure can also cause cancer; therefore, reducing indoor HCHO concentration and protecting residents' health is a top priority now. The way to remove and reduce HCHO is now mainly to control HCHO emissions and ensure environmental ventilation. At present, many methods have been studied to remove HCHO, such as adsorption, plasma assisted oxidation, photocatalytic explan...

Claims

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Application Information

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Patent Type & Authority Applications(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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