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A low-temperature microwave preparation method of anatase titanium dioxide

An anatase titanium dioxide, low temperature technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide and other directions, can solve the problems of high risk and harsh preparation environment of titanium dioxide process, achieve good performance and solve the preparation environment Harsh, dimensionally controlled effects

Active Publication Date: 2020-06-23
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides a low-temperature microwave preparation method of anatase-type titanium dioxide. Based on the low-temperature microwave method, it solves the problems of harsh preparation environment and high risk in the existing titanium dioxide process, and obtains simple size control. , anatase titanium dioxide with good performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A low-temperature microwave preparation method of anatase titanium dioxide, comprising the steps of:

[0031] Step 1, adding ammonium hexafluorotitanate to absolute ethanol and stirring until completely dispersed, then adding lithium hydroxide and continuing to stir to form a dispersion;

[0032] Step 2, putting the dispersion liquid into a ball milling reactor for ball milling reaction for 1 hour to obtain a ball milling liquid;

[0033] Step 3, adding hydrochloric acid solution to the ball mill liquid and stirring evenly, then reacting in microwave at low temperature for 3 hours, cooling and filtering to obtain a white precipitate;

[0034] Step 4, put the white precipitate into the ethanol-acetic acid solution, sonicate for 10 minutes, filter and dry to obtain a white powder;

[0035] Step 5, putting the white powder into a sealed reaction kettle for ultraviolet irradiation treatment for 2 hours to obtain anatase titanium dioxide particles.

[0036] The concentrati...

Embodiment 2

[0044] A low-temperature microwave preparation method of anatase titanium dioxide, comprising the steps of:

[0045] Step 1, adding ammonium hexafluorotitanate to absolute ethanol and stirring until completely dispersed, then adding lithium hydroxide and continuing to stir to form a dispersion;

[0046] Step 2, putting the dispersion liquid into a ball milling reactor for ball milling reaction for 2 hours to obtain a ball milling liquid;

[0047] Step 3, adding hydrochloric acid solution to the ball mill liquid and stirring evenly, then microwave reaction at low temperature for 5 hours, after cooling, filter to obtain a white precipitate;

[0048] Step 4, put the white precipitate into the ethanol-acetic acid solution, sonicate for 30 minutes, filter and dry to obtain a white powder;

[0049] Step 5, putting the white powder into a sealed reaction kettle for ultraviolet irradiation treatment for 3 hours to obtain anatase titanium dioxide particles.

[0050] The concentration...

Embodiment 3

[0058] A low-temperature microwave preparation method of anatase titanium dioxide, comprising the steps of:

[0059] Step 1, adding ammonium hexafluorotitanate to absolute ethanol and stirring until completely dispersed, then adding lithium hydroxide and continuing to stir to form a dispersion;

[0060] Step 2, putting the dispersion liquid into a ball milling reactor for ball milling reaction for 2 hours to obtain a ball milling liquid;

[0061] Step 3, adding hydrochloric acid solution to the ball mill liquid and stirring evenly, then microwave reaction at low temperature for 4 hours, after cooling, filter to obtain a white precipitate;

[0062] Step 4, put the white precipitate into the ethanol-acetic acid solution, sonicate for 20 minutes, filter and dry to obtain a white powder;

[0063] Step 5, putting the white powder into a sealed reaction kettle for ultraviolet irradiation treatment for 3 hours to obtain anatase titanium dioxide particles.

[0064] The concentration...

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Abstract

The invention belongs to the field of nanomaterials, and specifically relates to a low-temperature microwave preparation method of anatase titanium dioxide, comprising the following steps: step 1, adding ammonium hexafluorotitanate to absolute ethanol and stirring until completely dispersed, and then adding lithium hydroxide Continue to stir to form a dispersion; step 2, put the dispersion into a ball milling reactor for ball milling reaction for 1-2h to obtain a ball milling liquid; step 3, add hydrochloric acid solution to the ball milling liquid and stir evenly, then react with microwave at low temperature for 3-5h, After cooling, filter to obtain a white precipitate; step 4, put the white precipitate in an ethanol-acetic acid solution, ultrasonicate for 10-30min, filter and dry to obtain a white powder; step 5, put the white powder in a sealed reaction kettle Ultraviolet irradiation treatment for 2-3 hours to obtain anatase titanium dioxide particles. Based on the low-temperature microwave method, the invention solves the problems of harsh environment and high risk in the preparation of the existing titanium dioxide technology, and obtains the anatase titanium dioxide with simple size control and good performance.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a low-temperature microwave preparation method of anatase titanium dioxide. Background technique [0002] As a novel oxidation technology, semiconductor photocatalysis has attracted attention. The strong oxidizing hydroxyl radicals produced by photocatalytic reactions can decompose difficult-to-degrade organic pollutants into carbon dioxide and water, so they are widely used in organic sewage treatment. Among various semiconductor photocatalysts, titanium dioxide has become one of the most studied photocatalytic semiconductor materials due to its non-toxic, stable chemical properties, high catalytic activity, and low price. [0003] Anatase titanium dioxide is widely used because of its excellent photocatalytic properties, and its preparation usually adopts high-temperature calcination above 200 °C. Although high temperature can promote the transformation of titan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B01J21/06
CPCB01J21/063C01G23/053C01P2002/30C01P2004/62
Inventor 徐海涛
Owner SHAOXING UNIVERSITY
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