Preparation method of zinc silicate nanometer material

A nanomaterial, zinc silicate technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as unfavorable industrial production, increase preparation cost, etc., and achieve low reaction temperature, easy control of product composition, and size distribution. uniform effect

Inactive Publication Date: 2013-03-20
SHIJIAZHUANG UNIVERSITY
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Problems solved by technology

At present, the research on the preparation of zinc silicate nanomaterials obtained by hydrothermal method is still very limited at home and abroad, and most of them need to introduce surfactants (X. Yu, Y. H. Wang, J. Nanosci. Nanotechno. 2010, 10, 1-4 ; J. X. Wan, Z. H. Wang, X. Y. Chen, L. Mu, W. C. Yu, Y. T. Qian, J. Lumin. 2006, 121, 32-38), organic templates (G. Q. Xu, J. Q. Liu, Z. X. Zheng, Y. C. Wu, Chin . J. Lumin. 2011, 32, 550-554) and other additives, or can only be obtained after a long reaction at a high temperature of 280 ℃ (H. F. Wang, Y. Q. Ma, G. S. Yi, D. P. Chen, Mater. Chem. Phys. 2003, 82, 414-418), these methods greatly increase the preparation cost, and are not conducive to industrial production

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  • Preparation method of zinc silicate nanometer material
  • Preparation method of zinc silicate nanometer material
  • Preparation method of zinc silicate nanometer material

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Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of zinc silicate nanomaterials, using amorphous nano silicon dioxide and soluble zinc salt as raw materials, specifically comprises the following steps:

[0027] Step A, at room temperature, weigh 2mmol of amorphous nano-SiO with a diameter of about 200nm 2 Add to 10mL 0.4mol / L Zn(NO 3 ) 2 ·6H 2 O solution, stirred for 10 min to form a suspended aqueous solution, then adjusted the pH value of the reaction system to 5 with 1mol / L NaOH solution, and continued to stir for 30 min;

[0028] Step B, transfer the suspended aqueous solution in step A into a 25 mL hydrothermal reaction kettle, seal it and place it in a constant temperature box, and conduct a hydrothermal reaction at 220°C for 24 hours;

[0029] Step C, after the reaction is completed, the reaction system is cooled to room temperature, the reaction product is centrifuged, and then the reaction product is washed with deionized water and absolute ethanol for 5 times to remove impurity ions, ...

Embodiment 2

[0034] Step A, at room temperature, weigh 2mmol of amorphous nano-SiO with a diameter of about 200nm 2 Add to 10 mL 0.4 mol / L Zn(NO 3 ) 2 ·6H 2 O solution, stir 10min, form suspended aqueous solution, after the pH value of reaction system is adjusted to 9 with the NaOH solution of 1mol / L then, continue stirring 30min;

[0035]Step B, transfer the suspended aqueous solution in step A into a 25 mL hydrothermal reaction kettle, seal it and place it in a constant temperature box, and conduct a hydrothermal reaction at 220°C for 24 hours;

[0036] Step C, after the reaction is completed, the reaction system is cooled to room temperature, the reaction product is centrifuged, and then the reaction product is washed with deionized water and absolute ethanol for 5 times to remove impurity ions, and then the washed product is vacuum-dried Vacuum drying at 60°C for 4 hours in the oven to obtain Zn 2 SiO 4 Nano stave.

[0037] The Zn that present embodiment makes 2 SiO 4 The XRD s...

Embodiment 3

[0039] Step A, at room temperature, weigh 2mmol of amorphous nano-SiO with a diameter of about 200nm 2 Add to 10mL 0.4 mol / L Zn(NO 3 ) 2 ·6H 2 O solution, stirred for 20 min to form a suspended aqueous solution, then adjusted the pH value of the reaction system to 13 with 2mol / L NaOH solution, and continued to stir for 30 min;

[0040] Step B, transfer the suspended aqueous solution in step A into a 25 mL hydrothermal reaction kettle, seal it and place it in a constant temperature box, and conduct a hydrothermal reaction at 220°C for 24 hours;

[0041] Step C, after the reaction is completed, the reaction system is cooled to room temperature, the reaction product is centrifuged, and then the reaction product is washed with deionized water and absolute ethanol for several times to remove impurity ions, and then the washed product is placed in a vacuum drying oven Vacuum drying at 60°C for 4 hours to obtain Zn 2 SiO 4 Submicron rods.

[0042] Zn prepared in this embodiment...

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Abstract

The invention discloses a preparation method of a zinc silicate nanometer material. Amorphous nanometer silicon dioxide and soluble zinc salt are used as raw materials. The preparation method comprises the following steps: (A) weighing the amorphous nanometer silicon dioxide and the soluble zinc salt according to a stoichiometric ratio so as to prepare a suspended aqueous solution, regulating pH value of the suspended aqueous solution to 5-13, and stirring the suspended aqueous solution; (B) transferring the suspended aqueous solution in the step A into a hydrothermal reaction kettle and reacting the suspended aqueous solution at 160-230 DEG C for 2-24 hours; and (C) cooling a reaction system after the reaction is finished, and washing and drying a reaction product so as to obtain the zinc silicate nanometer material. The preparation method disclosed by the invention has the advantages of mild reaction, good reproducibility, simplicity in operation and the like; and the prepared Zn2SiO4 can be widely applied to the fields of fluorescent materials, catalytic degradation, adsorbing materials and so on.

Description

Technical field [0001] The present invention relates to the field of synthesis of inorganic functional nanomaterials, in particular to a preparation method of zinc silicate nanomaterials, which uses a hydrothermal method to form the nanomaterials in one step, with simple technology and short process. Background technique [0002] Zinc silicate (Zn 2 SiO 4 ) is an important inorganic material that is widely used in fluorescent materials, adsorbents, glass additives, coatings and other fields. In particular, zinc silicate, as a luminescent matrix material, has the advantages of strong environmental adaptability, good chemical stability, strong moisture resistance, easy preparation, and low price, and has attracted much attention in the research of luminescent materials. [0003] At present, the synthesis method of zinc silicate materials is mainly a high-temperature solid-state reaction method, that is, ZnO and SiO 2 It is obtained by mixing according to stoichiomet...

Claims

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Application Information

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IPC IPC(8): C01B33/20B82Y30/00
Inventor 张绍岩次立杰陆敏杨建超孙凤王淑玲
Owner SHIJIAZHUANG UNIVERSITY
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