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Preparation method for loading titanium dioxide (TiO2) nano fiber photocatalyst on basalt cellucotton substrate

A basalt fiber and nanofiber technology, applied in catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of restricting the industrialization of photocatalysts, difficulty in recycling and reuse, and large loss of active components, and achieve cost Low cost, simple preparation method and easy recovery

Active Publication Date: 2014-02-05
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0003] However, due to the nano-TiO 2 The shortcomings of powders such as easy aggregation, difficulty in recycling, and large loss of active ingredients severely restrict the development of nano-TiO 2 The industrialization of photocatalysts, so the preparation of stable and efficient supported TiO 2 Photocatalyst has become one of the key technologies for photocatalytic oxidation

Method used

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  • Preparation method for loading titanium dioxide (TiO2) nano fiber photocatalyst on basalt cellucotton substrate
  • Preparation method for loading titanium dioxide (TiO2) nano fiber photocatalyst on basalt cellucotton substrate
  • Preparation method for loading titanium dioxide (TiO2) nano fiber photocatalyst on basalt cellucotton substrate

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Experimental program
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Embodiment 1

[0025] TiO loaded on a basalt fiber cotton matrix 2 The preparation method of nanofiber photocatalyst, the method step is as follows,

[0026] Weigh 50ml of tetrabutyl titanate, stir at 60°C, add nitric acid dropwise at a rate of 1 drop per minute to the mixture until pH = 4, stir evenly for 30min to obtain a transparent red solution, then add polyvinylpyrrolidone PVPk90 (the amount of polyvinylpyrrolidone used is 9% of the total mass of the solution) was stirred for 4 hours to fully dissolve and evenly, and then stood still for 1 hour to obtain a transparent precursor solution. The PVP / TiO was prepared by spinning at an ambient temperature of 20 °C, a humidity of 40%, a curing distance of 18 cm, and a horizontal and lateral inclination angle of PTFE needle and stainless steel needle at 16°. 2 Composite fiber, stainless steel electrode is used as the conductive rod of spinning solution, and the negative electrode receiving device is basalt fiber cotton with electroless nickel...

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Abstract

The invention relates to a preparation method for loading a titanium dioxide (TiO2) nano fiber photocatalyst on a basalt cellucotton substrate. The method comprises the following raw materials: tetrabutyl titanate, polyvinylpyrrolidone (PVPK90), absolute ethyl alcohol, nitric acid and basalt cellucotton. A precursor solution is prepared by adopting tetrabutyl titanate, nitric acid and polyvinylpyrrolidone (PVPK90), PVP / TiO2 composite fibers are precipitated on the basalt cellucotton substrate after being pre-processed by an electrospinning technique, then the basalt cellucotton substrate with the PVP / TiO2 composite fibers is insulated and sintered and then cooled to the room temperature, so that the photocatalyst with TiO2 nano fibers being loaded on the basalt cellucotton substrate is obtained. The method is characterized in that the TiO2 nano fibers with large draw ratio, controllable diameter and large specific surface area is loaded on the basalt cellucotton substrate with large porous surface area, so that the TiO2 photocatalytic efficiency is improved, and the catalyst is easy to recover.

Description

technical field [0001] The invention relates to a basalt fiber cotton matrix loaded with TiO 2 The invention discloses a preparation method of a nanofiber photocatalyst, relating to the field of water treatment materials. Background technique [0002] According to the latest statistics, the annual discharge of textile printing and dyeing wastewater in my country is 7 billion tons. This type of organic wastewater contains a variety of highly toxic and high-concentration organic compounds. The traditional treatment methods include flocculation precipitation, adsorption, biochemical and chemical oxidation. law etc. These methods all have problems such as high energy consumption, high cost, and incomplete treatment. Therefore, the development of effective printing and dyeing process wastewater treatment technologies has an important impact on industrial production, environmental protection, and national life. In recent years, titanium dioxide TiO 2 The main photocatalytic oxid...

Claims

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Application Information

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IPC IPC(8): B01J35/06B01J35/10B01J32/00B01J21/06C02F1/72
Inventor 梁小平罗大军徐彩云高红娇徐梦星王浩龙王科翔张颖策
Owner TIANJIN POLYTECHNIC UNIV
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