Preparation method of PANI (Polyaniline)/TiO2 montmorillonite composite material integrating high-efficiency adsorption and photocatalysis

A technology of composite materials and montmorillonite, which is applied in the field of new material synthesis, can solve the problems of easy aggregation of particles, low photocatalytic activity, poor adsorption effect, etc., and achieve the effect of eliminating the phenomenon of agglomeration

Inactive Publication Date: 2018-11-13
GUIZHOU UNIV
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  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to: provide a kind of PANI / TiO that has efficient adsorption and photocatalysis simultaneously 2 Preparation method of montmorillonite composites to address TiO 2 Or when organically modified montmorillonite alone treats printing and dyeing wastewater, the photocatalytic activity is low, and TiO 2 Particles are easy to agglomerate, poor adsorption effect and other problems

Method used

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Embodiment

[0025] A kind of PANI / TiO with high-efficiency adsorption and photocatalysis provided by this embodiment 2 The preparation method of the montmorillonite composite material is as follows: 3g of high-purity sodium-based montmorillonite product is made into a 0.30% nano-montmorillonite suspension, and 3g of sodium hexametaphosphate is added at the same time, stirred for 12 hours, and set aside; Under the conditions, take an appropriate amount of titanium crosslinking agent TiCl 4 Slowly add dropwise to 40mL with a concentration of 4mol L -1 Hydrochloric acid solution, adjust pH = 7, then stand at room temperature for 2 hours; under the condition of vigorous stirring, slowly add the prepared titanium crosslinking agent solution to the nano-based montmorillonite dropwise at Ti / montmorillonite = 15mmol / g to suspend solution, stirred at room temperature for 3 hours, and then stood still for 11 hours; the product after standing was centrifuged (3600r / min), and the separated solid was...

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PUM

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Abstract

The invention provides a preparation method of a PANI (Polyaniline) / TiO2 montmorillonite composite material integrating high-efficiency adsorption and photocatalysis. The preparation method comprisesthe following steps: preparing a TiO2 / montmorillonite composite material by utilizing a hydrolytic precipitation method, then adding aniline and ammonium persulfate, and carrying out in-situ chemicalpolymerization reaction on aniline, ammonium persulfate and the TiO2 / montmorillone composite material, thus preparing the PANI / TiO2 montmorillonite composite material integrating the high-efficiency adsorption ability and the photocatalysis. During treatment of printing and dyeing wastewater, adsorption and photocatalytic degradation can occur at the same time, the problems of low photocatalytic activity, easy agglomeration of TiO2 particles, poor adsorption effect and the like during independent treatment of TiO2 or organic modified montmorillonite on the printing and dyeing wastewater can beeffectively solved, and the treatment capacity of the printing and dyeing wastewater can be greatly improved. The invention belongs to the technical field of synthesis of novel materials.

Description

technical field [0001] The invention provides a PANI / TiO 2 The invention discloses a method for preparing a montmorillonite composite material, which belongs to the field of new material synthesis. Background technique [0002] In the printing and dyeing industry, 700,000 tons of dyes are consumed every year, 50% of which are reactive dyes. These printing and dyeing wastewater are discharged into the environment, which will pose a serious threat to human health because they are difficult to degrade. The treatment of printing and dyeing wastewater is an urgent need for pollution control at present. solved puzzles. Therefore, it is particularly important to find an efficient and economical treatment method for printing and dyeing wastewater. Montmorillonite (Montmorillonite) is very rich in reserves in my country and has excellent performance. Montmorillonite modified by intercalation of metal ions or organic macromolecules can effectively remove pollutants in water. It can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J31/38
CPCB01J20/262B01J31/38B01J35/004
Inventor 庹必阳宋祥赵徐霞万李龙森
Owner GUIZHOU UNIV
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