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A kind of preparation scvo 4 powder method

A powder and solution technology is applied in the field of preparation of rare earth vanadate materials to achieve the effect of simple operation

Active Publication Date: 2022-04-05
HUZHOU TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sol-gel method has a wide range of applications in the field of material preparation, but the sol-gel method was used to prepare ScVO 4 powder, and research on its UV photocatalytic activity has not been reported

Method used

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  • A kind of preparation scvo <sub>4</sub> powder method
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  • A kind of preparation scvo <sub>4</sub> powder method

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Experimental program
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Effect test

Embodiment 1

[0015] At room temperature under stirring conditions, 0.005mol Sc 2 o 3 Dissolve in 3.0ml concentrated nitric acid, then add 17.0ml distilled water to prepare solution A; add 0.01mol NH 4 VO 3 Dissolve in 5.0ml concentrated ammonia water, then add 15.0ml distilled water to prepare solution B. Under stirring conditions, slowly add 20.0ml of A solution to 20.0ml of B solution, and then add a certain amount of citric acid to make the citric acid and Sc 3+ The ratio of the amount of substances was 1.1:1, and the temperature of the solution was raised to 60° C. and stirred continuously for 20 minutes to obtain a reaction solution. Adjust the pH of the reaction solution to 9.0 with 0.1 mol of dilute nitric acid, continue stirring for 20 minutes to obtain a sol, put the sol in an oven at 100°C for 6 hours to obtain a gel; put the dry gel in a muffle furnace and calcinate at 750°C for 2 hours, After the muffle furnace is cooled to room temperature, the product is taken out to obta...

Embodiment 2

[0020] At room temperature under stirring conditions, 0.005mol Sc 2 o 3 Dissolve in 3.0ml concentrated nitric acid, then add 17.0ml distilled water to prepare solution A; add 0.01mol NH 4 VO 3 Dissolve in 5.0ml concentrated ammonia water, then add 15.0ml distilled water to prepare solution B. Under stirring conditions, slowly add 20.0ml of A solution to 20.0ml of B solution, and then add a certain amount of citric acid to make the citric acid and Sc 3+ The ratio of the amount of substances was 1.6:1, and the temperature of the solution was raised to 60° C. and continued to stir for 20 minutes to obtain a reaction solution. Adjust the pH of the reaction solution to 9.5 with 0.1 mol of dilute nitric acid, continue stirring for 30 minutes to obtain a sol, put the sol in an oven at 100°C for 6 hours to react to obtain a gel; put the dry gel in a muffle furnace for calcination at 700°C for 5 hours, After the muffle furnace is cooled to room temperature, take out the product ScV...

Embodiment 3

[0022] At room temperature under stirring conditions, 0.005mol Sc 2 o 3 Dissolve in 3.0ml concentrated nitric acid, then add 17.0ml distilled water to prepare solution A; add 0.01mol NH 4 VO 3 Dissolve in 5.0ml concentrated ammonia water, then add 15.0ml distilled water to prepare solution B. Under stirring conditions, slowly add 20.0ml of A solution to 20.0ml of B solution, and then add a certain amount of citric acid to make the citric acid and Sc 3+ The ratio of the amount of substances was 1.4:1, and the temperature of the solution was raised to 60° C. and continued to stir for 20 minutes to obtain a reaction solution. Adjust the pH of the reaction solution to 8.5 with 0.1 mol of dilute nitric acid, keep stirring for 20 minutes to obtain a sol, put the sol in an oven at 100°C and react for 6 hours to obtain a gel; put the dry gel in a muffle furnace and calcinate at 800°C for 2 hours, After the muffle furnace is cooled to room temperature, the product is taken out to o...

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Abstract

A kind of preparation ScVO 4 Powder method involving a rare earth vanadate material ScVO 4 preparation. The present invention uses Sc 2 o 3 , NH 4 VO 3 Using citric acid as the main raw material, ScVO was prepared by the sol-gel method 4 Powder, ScVO 4 Approximate spherical particles, the average grain size is about 1 μm, and has excellent ultraviolet photocatalytic activity. The present invention is ScVO 4 The preparation of powder products has developed a new industry, achieving simple operation, energy saving and high efficiency, and industrial production of ScVO 4 The purpose of powder.

Description

technical field [0001] The invention relates to the preparation of a rare earth vanadate material, in particular to a method for preparing ScVO 4 powder method. Background technique [0002] S c VO 4 (Scandium vanadate) is a typical rare earth vanadate material, as reported in the literature (Xu Shuilin et al. Journal of Rare Earths, 2017, 35(1): 28-33) that rare earth vanadate materials have good optical, Magnetic and mechanical properties, as well as excellent thermal stability, have broad application prospects in the fields of luminescent materials, catalysis, drug delivery, solar cells, and laser materials. Xu Shuilin et al. used ScCl 3 ·6H 2 O and NH 4 VO 3 As the main raw material, 0.2mmol ScCl 3 ·6H 2 O was dissolved in 10 mL deionized water and added with 0.2 mmol NH 4 VO 3 5mL of the solution to obtain the reaction solution, transfer the reaction solution to a polytetrafluoroethylene-lined autoclave and react by hydrothermal method at 180°C for 24h; after...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/00
CPCC01G31/00C01P2002/72C01P2004/03Y02P20/10
Inventor 唐培松丁杨彬陈海锋王永亚
Owner HUZHOU TEACHERS COLLEGE