Preparation of phosphotungstic acid composite material and experimental method for testing adsorbing performance of phosphotungstic acid composite material to methylene blue

A composite material, methylene blue technology, applied in the field of metal experiments to achieve good adsorption effect

Inactive Publication Date: 2015-12-02
HUBEI NORMAL UNIV
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  • Preparation of phosphotungstic acid composite material and experimental method for testing adsorbing performance of phosphotungstic acid composite material to methylene blue
  • Preparation of phosphotungstic acid composite material and experimental method for testing adsorbing performance of phosphotungstic acid composite material to methylene blue
  • Preparation of phosphotungstic acid composite material and experimental method for testing adsorbing performance of phosphotungstic acid composite material to methylene blue

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[0033] The present invention will be further explained below in conjunction with the drawings:

[0034] The present invention is characterized in that it includes the following methods:

[0035] Experimental reagent: sodium tungstate [Na 2 WO 4 ·2H 2 O], concentrated phosphoric acid, concentrated hydrochloric acid, anhydrous ether, zinc nitrate hexahydrate [Zn(NO 3 ) 2 ·6H 2 O], terephthalic acid [H 2 BDC], N,N-dimethylformamide, methylene blue, double distilled water;

[0036] Metal organic framework composite material H 6 P 2 W 18 O 62 / MOF-5 preparation:

[0037] (1) Preparation of Dawson-type phosphotungstic acid: add 35mL concentrated H 3 PO 4 (The mass fraction is 85%), add dropwise to 50g of Na 2 WO 4 ·2H 2 In a 60mL aqueous solution of O, heat to 120°C and keep refluxing for 8h. After it is sufficiently cooled, add excess hydrochloric acid for acidification, and then extract the acidified liquid with an equal volume of ether to obtain a mixture of phosphotungstate ether, heat ...

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Abstract

The invention discloses preparation of a phosphotungstic acid composite material and an experimental method for testing the adsorbing performance of the phosphotungstic acid composite material to methylene blue. Dawson type H6P2W18O62 and a metal organic skeleton MOF-5 serve as raw materials. An adsorbent H6P2W18O62/MOF-5 composite material is prepared through solvothermal, and representation is performed through IR, XRD, SEM and other means. The adsorbing performance of the phosphotungstic acid composite material to the methylene blue (MB) in an aqueous solution is researched, and influences of initial pH, temperature and MB in different initial concentrations on the adsorbing capacity are discussed. Compared with the prior art, the MOF-5 is modified through the H6P2W18O62, the organic skeleton composite material H6P2W18O62/MOF-5 is synthesized, the modified material has a good adsorbing effect on the methylene blue (MB), application prospects are provided for the situation that MOFs materials are used for liquid phase adsorption, and certain research significance is achieved.

Description

technical field [0001] The invention relates to a metal experiment method, in particular to a method for preparing a MOF-5 loaded Dawson-type phosphotungstic acid composite material and an experiment method for methylene blue adsorption performance. Background technique [0002] Dyes in textiles, paints, food technology and hair dyes [1-8] In the daily production process of these industries, a large amount of dye wastewater will inevitably be produced, resulting in dye becoming the main component of wastewater. Dyestuffs have become the main source of pollution in major water systems in my country. Many dyes in the dye family are toxic and even carcinogenic to the human body, directly threatening human beings themselves. And with the diversification of dye components, the difficulty of its processing is gradually increasing. Finding a new treatment method for dye wastewater is an urgent problem to be solved at present. [0003] Researchers at home and abroad have done a ...

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IPC IPC(8): B01J20/22B01J20/30B01D15/00
Inventor 杨水金龚文朋刘晓霞杨赟陈秀云杜晓刚
Owner HUBEI NORMAL UNIV
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