Novel heterotantalate and preparation method and application thereof

A technology of tantalate and heteropoly, which is applied in the field of new heteropoly tantalate and its preparation, can solve the problems of little research and no reports of heteropoly tantalate, and achieve a clear structure, low cost and easy operation Effect

Active Publication Date: 2017-05-31
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, polytantalate is still in its infancy, and there are few studies related to it, and so far there has been no report on heteropolytantalate

Method used

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  • Novel heterotantalate and preparation method and application thereof
  • Novel heterotantalate and preparation method and application thereof
  • Novel heterotantalate and preparation method and application thereof

Examples

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Embodiment 1

[0023] A preparation method of a novel heteropolytantalate, comprising the following steps:

[0024] (1) Synthesize potassium hexatantalate K according to conventional methods in this field 8 [Ta 6 o 19 ]·16H 2 O precursor (specific references Nelson W H, Tobias R S, Inorg. Chem., 1963, 2, 985–992);

[0025] (2) Under stirring conditions, mix 1.50 g K 8 [Ta 6 o 19 ]·16H 2 O (0.75 mmol) was dissolved in hydrogen peroxide solution (obtained by mixing 13.5 ml of 30 wt% hydrogen peroxide and 165 ml of water), added 6.5 ml of 3 mol / L phosphoric acid solution, stirred at room temperature for 15 minutes, and adjusted the pH to 2.5, reacted at 90°C for 3 hours, cooled to room temperature, added 0.56 g of potassium chloride (7.5 mmol) and stirred at room temperature for 30 min, filtered to remove the precipitate and stood for 8 days to obtain crystals, which were post-treated (washed, dried ) That is, the yield is 71%.

Embodiment 2

[0027] A preparation method of a novel heteropolytantalate, comprising the following steps:

[0028] (1) Synthesize potassium hexatantalate K according to conventional methods in this field 8 [Ta 6 o 19 ]·16H 2 O precursor (specific references Nelson W H, Tobias R S, Inorg. Chem., 1963, 2, 985–992).

[0029] (2) Under stirring conditions, mix 1.50 g K 8 [Ta 6 o 19 ]·16H 2 O (0.75 mmol) was dissolved in hydrogen peroxide solution (consisting of 13.5 ml of 30 wt% hydrogen peroxide and 165 ml of water), and 6.2 ml of 3 mol / L phosphoric acid solution was added, stirred at room temperature for 15 minutes, and then adjusted to pH 2.3 with sodium hydroxide solution. React at 85 °C for 4 hours, cool to room temperature, add 0.56 g of potassium chloride (7.5 mmol) and stir at room temperature for 30 min, filter to remove the precipitate and place it for 10 days to obtain crystals, which are post-treated (washed and dried) Obtained, the yield is 53%.

Embodiment 3

[0031] A preparation method of a novel heteropolytantalate, comprising the following steps:

[0032] (1) Synthesize potassium hexatantalate K according to conventional methods in this field 8 [Ta 6 o 19 ]·16H 2 O precursor (specific references Nelson W H, Tobias R S, Inorg. Chem., 1963, 2, 985–992);

[0033] (2) Under stirring conditions, mix 1.50 g K 8 [Ta 6 o 19 ]·16H 2 O (0.75 mmol) was dissolved in hydrogen peroxide solution (consisting of 13.5 ml 30 wt% hydrogen peroxide and 165 ml water), added 6.5 ml 3 mol / L phosphoric acid solution, stirred at room temperature for 15 minutes, and adjusted the pH to 2.1 with sodium hydroxide solution. React at 80 °C for 3 hours, cool to room temperature, add 0.56 g of potassium chloride (7.5 mmol) and stir at room temperature for 30 min, filter to remove the precipitate and place it for 10 days to obtain crystals, which are post-treated (washed and dried) The yield was 31%.

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Abstract

The invention discloses novel heterotantalate. A chemical formula of the novel heterotantalate is K3[H3P4(TaO2)6(OH)4O20].12H2O, the crystal belongs to the monoclinic system, the space group is P2(1/C), the lattice parameter is a=12.6862(10)angstrom, b=9.9322(8)angstrom, c=16.8359(13)angstrom, and beta=105.3940(10)angstrom. The novel heterotantalate is prepared by enabling potassium hexatantalate to react with phosphoric acid under a conventional hydrogen peroxide solution condition. The material has high stability, and has the performances of photocatalytically degrading Rhodamine B, azophloxine and methyl blue; furthermore, the novel heterotantalate is simple in preparation process, easy to operate, low in cost, high in yield, and has a potential application prospect.

Description

technical field [0001] The invention belongs to the technical field of new polyacid chemical materials, and in particular relates to a novel heteropolytantalate and its preparation method and application. Background technique [0002] Polyacids are usually a class of polynuclear complexes formed by the connection of early transition metal ions through oxygen atoms, and play an increasingly important role in the fields of catalysis, materials, magnetism, medicine, and nanoscience. According to whether it contains heteroatoms, polyacids can be divided into two categories: isopolyoxometalate and heteropolyoxometalate. The same polyanion is obtained by condensation of the same inorganic oxoacid ion, such as [W 6 o 19 ] 2- ; The condensation of different kinds of inorganic oxoacid ions is heteropolyanions, such as [PW 12 o 40 ] 3- , where P is a heteroatom (Hetero atom), also known as a central atom, and W is an Addenda atom (Addenda atom), also known as a polyatom. Accord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/18B01J27/186B01J27/188C02F1/30C02F101/30
CPCB01J27/186B01J27/188C02F1/30C02F2101/308
Inventor 张东娣李龙升王海瑛梁志结马鹏涛王敬平牛景杨
Owner HENAN UNIVERSITY
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