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Preparation method of BiOI/acidified attapulgite composite bifunctional photocatalytic material

A technology of acidifying attapulgite and photocatalytic materials, which is applied in the field of photocatalysis and material chemistry, can solve the problems of low level of comprehensive utilization, and achieve the effects of high adsorption and photocatalytic activity, low production cost and simple process

Inactive Publication Date: 2017-05-24
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although our country is rich in attapulgite mineral resources, the level of comprehensive utilization is low. Therefore, the preparation of composite dual-functional photocatalytic materials with natural attapulgite mineral resources is of great significance for optimizing the comprehensive utilization of attapulgite mineral resources and promoting economic development. important practical significance

Method used

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  • Preparation method of BiOI/acidified attapulgite composite bifunctional photocatalytic material
  • Preparation method of BiOI/acidified attapulgite composite bifunctional photocatalytic material
  • Preparation method of BiOI/acidified attapulgite composite bifunctional photocatalytic material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 20g of attapulgite clay, soak it with 80ml of 6mol / L HCl at 60°C for 12h, filter it with suction, wash it repeatedly with deionized water until neutral, and dry it at 80°C to obtain 18.2g of acidified attapulgite, which is ready for use. Weigh 5.0g Bi(NO 3 ) 3 ·5H 2 O was mixed with 1.7g of KI solid, added 50ml of ethylene glycol, and mechanically stirred for 30min until dissolved. Weigh 0.4 g of acidified attapulgite and add it to the above homogeneous solution, stir mechanically for 1 h, transfer to a high-pressure reactor, and conduct hydrothermal crystallization at 160° C. for 24 h to obtain the desired product. The product was cooled to room temperature, filtered with suction, washed 2 to 3 times with absolute ethanol, dried at 80°C, and ground to obtain 1 # The surface properties of BiOI / acidified attapulgite composites (including specific surface area, pore volume and pore diameter data) are shown in Table 1.

Embodiment 2

[0028] Weigh 3.9g Bi(NO 3 ) 3 ·5H 2 O was mixed with 1.3g of KI solid, added 50ml of ethylene glycol, and mechanically stirred for 30min until dissolved. Weigh 1.2 g of the acidified attapulgite prepared in Example 1, add it to the above homogeneous solution, stir it mechanically for 1 h, transfer it to a high-pressure reactor, and conduct hydrothermal crystallization at 160° C. for 24 h to obtain the desired product. The product was cooled to room temperature, filtered with suction, washed 2 to 3 times with absolute ethanol, dried at 80°C, and ground to obtain 2 # The surface properties of BiOI / acidified attapulgite composites (including specific surface area, pore volume and pore diameter data) are shown in Table 1.

Embodiment 3

[0030] Weigh 2.8g Bi(NO 3 ) 3 ·5H 2O was mixed with 1.0g of KI solid, added 50ml of ethylene glycol, and mechanically stirred for 30min until dissolved. Weigh 2.0 g of the acidified attapulgite prepared in Example 1, add it to the above homogeneous solution, stir it mechanically for 1 h, transfer it to a high-pressure reactor, and conduct hydrothermal crystallization at 160° C. for 24 h to obtain the desired product. The product was cooled to room temperature, filtered with suction, washed 2 to 3 times with absolute ethanol, dried at 80°C, and ground to obtain 3 # The surface properties of BiOI / acidified attapulgite composites (including specific surface area, pore volume and pore diameter data) are shown in Table 1.

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Abstract

The invention relates to a preparation method of a BiOI / acidified attapulgite composite bifunctional photocatalytic material. The preparation method includes the following steps that acidified attapulgite is prepared; Bi(NO3)3.5H2O and KI are dissolved with ethylene glycol to obtain a homogeneous solution; the acidified attapulgite is added to the homogeneous solution, and the hydrothermal crystallization is performed to obtain a coarse product; suction filtration, washing and drying are performed to obtain the BiOI / acidified attapulgite composite bifunctional photocatalytic material. The preparation method has the advantages that the raw material utilization rate is high, the production cost is low, meanwhile an attapulgite applying range is widened, and the method can be used for producing mineral-based composite materials high in added value; the process is simple, the raw materials are cheap and easy to obtain, the preparation conditions are loose, the environment is not polluted, and the energy consumption is low. The specific surface area of the bifunctional photocatalytic material can be up to 120 m<2> / g, the pore volume can be up to 0.30 m<2> / g or above, pore size distribution is centralized, and pore performance is good.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis and material chemistry, and relates to a preparation method of a BiOI / acidified attapulgite composite dual-function photocatalytic material. Background technique [0002] With the aggravation of global environmental pollution and ecological damage, many toxic and harmful organic pollutants directly enter the environment. They exist for a long time, are widely distributed, and are bioaccumulative, causing great harm to human health. Photocatalytic technology is one of the effective means to control such pollutants. This technology can make full use of cheap and "green" sunlight to oxidize, decompose, and convert refractory organic pollutants into H 2 O.CO 2 and inorganic salts, so as to meet the requirements of harmless treatment of pollutants. [0003] In the current research, most of the semiconductor photocatalysts TiO 2 Applied to the treatment of environmental pollutants. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J35/04B01J35/08B01J35/10B01J20/12C02F1/30C02F1/28C02F101/38
CPCB01J20/12C02F1/281C02F1/30B01J27/06C02F2101/38C02F2305/10B01J35/56B01J35/51B01J35/615B01J35/635B01J35/647B01J35/39Y02W10/37
Inventor 关媛王少莽黄岩刘成赵玲杨鹏王勇博刘尚
Owner CHANGZHOU UNIV
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