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Method for synthesis of (010) preferred orientation bismuth vanadate powder by glycerol preparation hydrothermal process

A preferred orientation and glycerol technology, applied in chemical instruments and methods, crystal growth, single crystal growth, etc., can solve problems such as poor catalytic performance, achieve low cost, excellent performance, and mild reaction conditions

Active Publication Date: 2015-02-04
JILIN NORMAL UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that the bismuth vanadate powder prepared by the existing method is difficult to realize the preferred orientation along the b axis and has poor catalytic performance, and provides a hydrothermal process prepared by using glycerol to synthesize (010) preferred orientation bismuth vanadate powder method

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  • Method for synthesis of (010) preferred orientation bismuth vanadate powder by glycerol preparation hydrothermal process
  • Method for synthesis of (010) preferred orientation bismuth vanadate powder by glycerol preparation hydrothermal process
  • Method for synthesis of (010) preferred orientation bismuth vanadate powder by glycerol preparation hydrothermal process

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specific Embodiment approach 1

[0024] Specific implementation mode 1: In this implementation mode, the method steps of synthesizing (010) preferentially oriented bismuth vanadate powder by using the hydrothermal process modulated by glycerin are as follows:

[0025] 1. Use analytically pure nitric acid and deionized water to prepare a nitric acid solution with a concentration of 1mol / L, which is designated as solution A;

[0026] ②. Use analytically pure glycerol and deionized water to prepare a glycerol solution with a concentration of 0.5 mol / L to 10 mol / L, which is recorded as solution B;

[0027] ③. Mix solution A and solution B in steps ① and ② according to the volume ratio of 1:120-240 to obtain solution C;

[0028] ④. Weigh 48.5% to 50.5% of bismuth nitrate pentahydrate and 49.5% to 51.5% of sodium orthovanadate dodecahydrate respectively according to molar percentage;

[0029] 5. Dissolving the bismuth nitrate pentahydrate taken in step 4. in the solution C obtained in step 3. to prepare a bismuth ...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step ④, 50% of bismuth nitrate pentahydrate and 50% of sodium orthovanadate dodecahydrate are weighed by molar percentage. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step ②, analytically pure glycerol and deionized water are used to prepare a glycerol solution with a concentration of 1mol / L-8mol / L. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a method for synthesis of (010) preferred orientation bismuth vanadate powder by glycerol preparation hydrothermal process, relates to a method for the synthesis of bismuth vanadate powder, and solves the problems that preferred orientation along the b axis of the vanadate powder synthesized by methods in the prior art is very difficult to achieve, and catalytic performance is poor. The method is as follows: bismuth nitrate pentahydrate is dissolved in glycerol dilute nitric acid solution, then added with sodium orthovanadate dodecahydrate, and stirred, the obtained suspension is added into a reaction kettle foe reaction for 6-24h, and the (010) preferred orientation bismuth vanadate powder is obtained by cooling, filtering, washing, drying and grinding. The synthesized bismuth vanadate powder presents a high (010) preferred orientation, is conducive to improvement of the catalytic performance, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a method for synthesizing bismuth vanadate powder, in particular to a method for synthesizing (010) preferentially oriented bismuth vanadate powder through a hydrothermal process modulated by glycerin. Background technique [0002] Photocatalysis research involves hot research fields such as energy, materials and environment. Among them, bismuth vanadate, a semiconductor photocatalytic material, has attracted widespread attention due to its stable properties, wide spectral response range, strong redox ability, and low cost. . However, due to the poor surface adsorption capacity of bismuth vanadate photocatalytic materials and the easy recombination of photogenerated electrons and holes, the photocatalytic activity of bismuth vanadate materials is reduced. Promote the practical application of bismuth vanadate photocatalytic materials. Studies have found that the photocatalytic activity of bismuth vanadate photocatalytic materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B7/10C30B29/30
Inventor 刘伟赵国升姜大雨常立民李季
Owner JILIN NORMAL UNIV
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