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Preparation method for bismuth silicate powder for utilization of optical performance

A technology of optical properties and bismuth silicate is applied in the field of preparation of optical crystal materials, which can solve the problems of inability to observe the growth process, unfavorable industrial production and high equipment requirements, and achieve the effects of short preparation period, good crystallinity and less impurities in the product

Inactive Publication Date: 2013-04-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the reaction is carried out in a closed container, and the growth process cannot be observed, which is not intuitive; and the equipment requirements are high (high temperature and high pressure resistant steel, corrosion-resistant lining), technical difficulty is large (strict temperature and pressure control), and the cost is high; Poor safety performance; not conducive to industrial production

Method used

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  • Preparation method for bismuth silicate powder for utilization of optical performance

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Effect test

Embodiment 1

[0023] A preparation method of bismuth silicate powder for optical properties, including the following steps:

[0024] In the first step, 0.01mol of Bi(NO) 3 ·5H 2 O was dissolved in 15ml of glacial acetic acid to prepare a bismuth-containing solution;

[0025] The second step is to add ethyl orthosilicate dropwise to the bismuth-containing solution at a molar ratio of Bi:Si=12:1, and then put it into an ultrasonic instrument and ultrasonically clean at 40°C for 1 hour, using 0.01ml of analytical purity Glycol methyl ether adjusts the viscosity to form a uniform sol;

[0026] In the third step, the obtained sol was dried at 90°C for 15 hours to obtain a dry precursor powder;

[0027] The fourth step is to put the precursor powder into an alumina crucible and then put it into a muffle furnace together with the alumina crucible for sintering at a sintering temperature of 700°C and a sintering time of 12h to obtain bismuth silicate Bi 12 SiO 20 Powder.

Embodiment 2

[0029] A preparation method of bismuth silicate powder for optical properties, including the following steps:

[0030] In the first step, 0.04mol of Bi(NO) 3 ·5H 2 O was dissolved in 60ml of glacial acetic acid to prepare a bismuth-containing solution;

[0031] The second step is to add ethyl orthosilicate dropwise to the bismuth-containing solution at a molar ratio of Bi:Si=12:1, and then put it in an ultrasonic instrument for ultrasonic cleaning at 10°C for 1 hour, using 10ml of analytical pure ethyl Glycol methyl ether adjusts the viscosity to form a uniform sol;

[0032] In the third step, the obtained sol is dried at 150°C for 9 hours to obtain a dry precursor powder;

[0033] In the fourth step, put the precursor powder into an alumina crucible and then put it into a muffle furnace together with the alumina crucible for sintering at a sintering temperature of 900°C and a sintering time of 1h to obtain bismuth silicate Bi 12 SiO 20 Powder.

Embodiment 3

[0035] A preparation method of bismuth silicate powder for optical properties, including the following steps:

[0036] In the first step, 0.02mol of Bi(NO) 3 ·5H 2 O was dissolved in 20ml of glacial acetic acid to prepare a bismuth-containing solution;

[0037] The second step is to add ethyl orthosilicate dropwise to the bismuth-containing solution at a molar ratio of Bi:Si=12:1, and then put it in an ultrasonic instrument for ultrasonic cleaning at 30°C for 2h, using 0.1ml of analytical purity Glycol methyl ether adjusts the viscosity to form a uniform sol;

[0038] In the third step, the obtained sol is dried at 100°C for 11 hours to obtain a dry precursor powder;

[0039] The fourth step is to put the precursor powder into an alumina crucible and then put it into a muffle furnace together with the alumina crucible for sintering at a sintering temperature of 800°C and a sintering time of 1.5h to obtain bismuth silicate Bi 12 SiO 20 Powder.

[0040] For the bismuth silicate prepared ...

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Abstract

The invention relates to preparation of optical crystals and discloses a preparation method for bismuth silicate powder for utilization of optical performance. The method comprises the following steps: dissolving Bi(NO)3.5H2O in glacial acetic acid to prepare a bismuth-containing solution; adding ethyl orthosilicate drop by drop into the bismuth-containing solution according to a mol ratio of Bi to Si of 12:1, carrying out ultrasonic rinsing at low temperature, and adjusting viscosity by utilizing analytically pure ethylene glycol methyl ether to form a uniform sol; drying the sol to obtain dried precursor powder; sintering the precursor powder to obtain bismuth silicate Bi12SiO20 powder. The invention enables Bi12SiO20 powder with good purity and crystallinity to be prepared at low temperature within a short period of time, and the preparation method has the advantages of a simple preparation process, a short period and low cost.

Description

Technical field [0001] The invention relates to the preparation of optical crystal materials, in particular to a preparation method of bismuth silicate powder for optical performance. Background technique [0002] Bismuth silicate (Bi 12 SiO 20 (BSO for short) is a wide band gap, high resistivity non-ferroelectric cubic semi-insulator. It also has the effects of electro-optical, photoconductive, photorefractive, piezoelectric, acousto-optical, optical rotation, and Faraday rotation. It has been used in holographic storage, interferometric speckle photography, phase coupling, and real-time correlation. It has been shown to be A promising multifunctional material. Utilizing the electro-optic and photoconductive properties of BSO, many kinds of nonlinear optical transformations can be achieved with low-power lasers at room temperature. As a real-time volume holographic recording material, BSO is one of the few photorefractive materials with the highest sensitivity and the fastest ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/20B82Y40/00
Inventor 王秀峰许亚琴江红涛鲁俊雀
Owner SHAANXI UNIV OF SCI & TECH
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