Preparation method and use of nano TiO2/sepiolite composite material

A composite material and sepiolite technology, which is applied in the field of preparation of nano-TiO2/sepiolite composite materials, can solve the problems of harsh conditions, complex process, difficult operation, etc., and achieves low production cost, simple process steps, and control of formaldehyde. The effect of pollution

Inactive Publication Date: 2015-08-26
张吉鹏
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Problems solved by technology

However, there are problems such as complex process, harsh conditions, and difficult operation to varying degrees.

Method used

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  • Preparation method and use of nano TiO2/sepiolite composite material

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Embodiment

[0035] Embodiment: this embodiment provides a kind of nano-TiO 2 / The preparation method of sepiolite composite material, it comprises the following steps:

[0036] (1) Stir and mix sepiolite and water with a solid-to-liquid ratio of 0.5 to 1.5: 9 to 11 to obtain the first mixed solution; the solid-to-liquid ratio of sepiolite and water is preferably 1: 10; and the stirring and mixing time is 25 ~35 min, preferably 30 min.

[0037] (2) Select the intermediate suspension suspended in the middle of the first mixed solution; specifically, it includes the following steps: (2.1) after the first mixed solution is left to stand for 25 to 35 minutes, preferably after 30 minutes, remove the supernatant and For the sediment at the bottom, take the intermediate suspension; (2.2) stir and disperse the intermediate suspension for 25 to 35 minutes, preferably after 30 minutes, then let it stand for 25 to 35 minutes, preferably 30 minutes; (2.3) remove the static mixture in step (2.2). The...

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Abstract

The invention discloses a preparation method of a nano TiO2/sepiolite composite material, and also discloses a use of the nano TiO2/sepiolite composite material for formaldehyde degradation. The preparation method is simple in process steps and convenient to operate and comprises the steps: stirring and mixing sepiolite and water, then selecting a middle suspended matter, filtering, heating and drying, calcining, and thus obtaining purified sepiolite; and stirring and dispersing the purified sepiolite with water, then adding a TiCl4 solution, next heating and drying, roasting, and thus obtaining the nano TiO2/sepiolite composite powder material. The nano TiO2/sepiolite composite powder material is prepared by taking TiCl4 as a precursor and through a hydrolysis precipitation method, has the characteristics of wide sources of raw materials, low production cost, convenient use, repeatable use, no secondary pollution and the like, also has good effects of degrading formaldehyde and treating formaldehyde pollution, has the degradation rate reaching 98%, and is beneficial for wide popularization.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a nano-TiO 2 / Preparation method and application of sepiolite composite material. Background technique [0002] Sepiolite is a magnesium-containing porous chain silicate clay mineral with a unique nanostructure pore size. This mineral clay has a large pore volume and specific surface area, strong adsorption capacity, good chemical stability, and a large amount of acid The alkali center makes it have a certain catalytic effect, and it also has the function of synergistic catalytic effect with other catalysts. It is a rare functional non-metallic mineral material, which is especially suitable as a photocatalytic active component. carrier material. [0003] According to incomplete statistics, the following professors and experts have used sepiolite as a catalyst and adsorption carrier: Xie Zhimin, Dai Youzhi, etc. 2 / Research on the preparation of sepiolite composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/16B01D53/86B01D53/72
Inventor 张吉鹏
Owner 张吉鹏
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