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Lead molybdate nano crystal material and preparation method thereof

A technology of nanocrystals and lead molybdate, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as easy agglomeration, low purity of lead molybdate nanocrystal materials, and difficulty in controlling grain size and morphology , to achieve the effect of mild reaction conditions, saving energy and production time, and simple equipment

Inactive Publication Date: 2013-11-13
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of low purity, easy agglomeration and difficulty in controlling the grain size and shape of the lead molybdate nanocrystal material prepared by the existing method, the invention provides a lead molybdate nanocrystal material and a preparation method thereof

Method used

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  • Lead molybdate nano crystal material and preparation method thereof
  • Lead molybdate nano crystal material and preparation method thereof

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Embodiment 1

[0021] The method for preparing rod-shaped lead molybdate nanocrystal material comprises the following steps:

[0022] 1) Dissolve sodium chromate, lead nitrate and sodium molybdate in deionized water to prepare sodium chromate solution with a concentration of 0.1mol / L, lead nitrate solution with a concentration of 0.1mol / L and lead nitrate solution with a concentration of 0.1mol / L Sodium molybdate solution, for subsequent use;

[0023] 2) Get the sodium chromate solution and lead nitrate solution that step 1) makes according to CrO 4 2- and Pb 2+ The molar ratio is mixed at a ratio of 1:1 to obtain a solution containing lead chromate precipitate and stand for 1 hour;

[0024] 3) get step 1) the sodium molybdate solution that makes and step 2) the solution that contains lead chromate precipitation that obtains according to MoO 4 2- and Pb 2+ After mixing at a molar ratio of 1:1, let it stand for 3 hours, filter to obtain the precipitate generated by the reaction, then re...

Embodiment 2

[0027] The method for preparing rod-shaped lead molybdate nanocrystal material comprises the following steps:

[0028] 1) Dissolve sodium chromate, lead nitrate and sodium molybdate in deionized water to prepare sodium chromate solution with a concentration of 0.5mol / L, lead nitrate solution with a concentration of 0.5mol / L and lead nitrate solution with a concentration of 0.5mol / L Sodium molybdate solution, for subsequent use;

[0029] 2) Get the sodium chromate solution and lead nitrate solution that step 1) makes according to CrO 4 2- and Pb 2+ The molar ratio was mixed at a ratio of 1:1 to obtain a solution containing lead chromate precipitate and left to stand for 2 hours;

[0030] 3) get step 1) the sodium molybdate solution that makes and step 2) the solution that contains lead chromate precipitation that obtains according to MoO 4 2- and Pb 2+ After mixing with a molar ratio of 1:1, let it stand for 5 hours, filter to obtain the precipitate generated by the react...

Embodiment 3

[0033] The method for preparing rod-shaped lead molybdate nanocrystal material comprises the following steps:

[0034] 1) Dissolve sodium chromate, lead nitrate and sodium molybdate in deionized water to prepare sodium chromate solution with a concentration of 1.5mol / L, lead nitrate solution with a concentration of 1.5mol / L and lead nitrate solution with a concentration of 1.5mol / L Sodium molybdate solution, for subsequent use;

[0035] 2) Get the sodium chromate solution and lead nitrate solution that step 1) makes according to CrO 4 2- and Pb 2+ The molar ratio is mixed at a ratio of 1:1 to obtain a solution containing lead chromate precipitate and stand for 3 hours;

[0036] 3) get step 1) the sodium molybdate solution that makes and step 2) the solution that contains lead chromate precipitation that obtains according to MoO 4 2- and Pb 2+ After mixing at a molar ratio of 1:1, let it stand for 10 hours, filter to obtain the precipitate formed by the reaction, then rep...

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Abstract

A lead molybdate nano crystal material and a preparation method thereof are disclosed. The preparation method comprises following steps: respectively dissolving sodium chromate, lead nitrate and sodium molybdate in deionized water to prepare a sodium chromate solution, a lead nitrate solution and a sodium molybdate solution, mixing the sodium chromate solution with the lead nitrate solution according to the mole ratio of CrO4<2-> to Pb<2+> of 1:1, obtaining a solution containing the lead chromate precipitation, then mixing the sodium molybdate solution with the solution containing the lead chromate precipitation according to the mole ration of MoO4<2-> to Pb<2+> of 1:1, standing for 3 to 10 hours, filtering to obtain the precipitation generated by the reactions, repeatedly washing the precipitation with deionized water and absolute ethanol, and then drying the precipitation so as to obtain the product. The preparation method produces a lead molybdate nano crystal material, which has good crystallinity, high purity and a high length-diameter ratio. The material has vast application prospects in the fields of acousto-optic devices, optical fibers, optical materials and photocatalyst.

Description

technical field [0001] The invention relates to an inorganic non-metallic nano crystal material, in particular to a lead molybdate nano crystal material and a preparation method thereof. Background technique [0002] Lead molybdate is a new type of material with scheelite structure. It has high practical value in laser radar, scanning of TV and large-screen display, optical memory of photonic computer, laser communication and nuclear equipment. A photocatalyst, luminescent material and optical fiber, also has very broad application prospects. [0003] The traditional method for preparing lead molybdate is a solid-state reaction method. Although this method has a simple process, it often requires high-temperature heat treatment, high energy consumption, and the prepared product has low purity and is easy to agglomerate, so it is difficult to control the grain size. size and shape. Contents of the invention [0004] In order to solve the problems of low purity, easy ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82Y30/00
Inventor 王永刚杨琳琳王玉江王晓峰徐国辉林海燕罗伟
Owner LUOYANG INST OF SCI & TECH
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