Method for preparing titanate, titanic acid and titanium dioxide

A technology of titanate and titanic acid, applied in the direction of titanium dioxide, alkali metal titanate, chemical instruments and methods, etc., can solve the problems of difficult recovery of nano-photocatalysts, low tap density of nano-materials, lack of nano-material electrodes, etc. , to achieve the effect of easy large-scale industrial production, easy control of process parameters and low price

Active Publication Date: 2015-01-07
NINGBO NANOJP NEW MATERIAL TECH CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the preparation of titanate, titanic acid, and titanium dioxide materials into one-dimensional nanostructures such as nanowires or nanotubes has some disadvantages: for example, in the field of photocatalysis, nanophotocatalysts are not easy to recycle after photocatalysis; In the field of batteries, nanomaterials often have disadvantages such as low tap density and poor contact between particles, so that nanomaterial electrodes usually do not have high volume specific capacity and good fast charge and discharge performance.

Method used

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  • Method for preparing titanate, titanic acid and titanium dioxide
  • Method for preparing titanate, titanic acid and titanium dioxide
  • Method for preparing titanate, titanic acid and titanium dioxide

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Embodiment 1

[0050] Please refer to figure 1 , under stirring conditions, disperse 0.5 g of titanium sulfate in 50 ml of deionized water, hydrolyze at room temperature to form hydrated titanic acid precipitate, centrifuge the above hydrated titanic acid precipitate, wash with 50 ml of deionized water three times, and centrifuge to obtain Hydrated titanic acid precipitates after washing. The hydrated titanic acid precipitate after washing was dispersed in 40 ml of an aqueous solution with a concentration of sodium hydroxide of 1 mole per liter and a concentration of hydrogen peroxide of 2%. After stirring for 1 hour, the mixed solution was transferred to a hydrothermal kettle, heated to 150° C., and kept at a constant temperature for 12 hours to prepare sea urchin-like sodium titanate with nano-micro hierarchical structure. The sea urchin-like sodium titanate solid was transferred to a beaker, ultrasonically dispersed, washed 5 times with deionized water, and centrifuged. Then add 0.01 mo...

Embodiment 2

[0059] Please refer to figure 1 , under stirring conditions, disperse 0.5 g of titanium sulfate in 50 ml of deionized water, hydrolyze at room temperature to form hydrated titanic acid precipitate, centrifuge the above hydrated titanic acid precipitate, wash with 50 ml of deionized water three times, and centrifuge to obtain Hydrated titanic acid precipitates after washing. The hydrated titanic acid precipitate after washing was dispersed in 40 ml of an aqueous solution with a concentration of sodium hydroxide of 1 mole per liter and a concentration of hydrogen peroxide of 2%. After stirring for 1 hour, the mixed solution was transferred to a hydrothermal kettle, heated to 150° C., and kept at a constant temperature for 12 hours to prepare sea urchin-like sodium titanate with nano-micro hierarchical structure. The sea urchin-like sodium titanate solid was transferred to a beaker, ultrasonically dispersed, washed 3 times with deionized water, and centrifuged. Then add 0.01 mo...

Embodiment 3

[0061] Please refer to figure 1 , under stirring conditions, disperse 1 gram of titanium sulfate in 50 ml of deionized water, hydrolyze at room temperature to form hydrated titanic acid precipitate, centrifuge the above hydrated titanic acid precipitate, wash with 50 ml of deionized water for 5 times, and centrifuge to obtain Hydrated titanic acid precipitates after washing. The hydrated titanic acid precipitate after washing was dispersed in 40 ml of an aqueous solution with a potassium hydroxide concentration of 2 moles per liter and a hydrogen peroxide concentration of 6%. After stirring for 1 hour, the mixed solution was transferred to a hydrothermal kettle, heated to 150° C., and kept at a constant temperature for 12 hours to prepare sea urchin-like potassium titanate with nano-micro hierarchical structure. The urchin-like potassium titanate solid was transferred to a beaker, ultrasonically dispersed, washed 5 times with deionized water, and centrifuged. Then add 0.1 mo...

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Abstract

The invention discloses a method for preparing titanate, titanic acid and titanium dioxide. The method for preparing titanate comprises the following steps: carrying out hydrolysis reaction on a titanium source to obtain hydrated titanium acid precipitates, wherein the titanium source is selected from one or a composition of more of titanium sulfate, titanyl sulfate, titanium tetrachloride, titanium tetrafluoride, titanium ethoxide, titanium propoxide, tetrabutyl titanate, ethylene glycol titanium, glycerol titanium and ammonium fluorotitanate; dispersing the hydrated titanium acid precipitates in an aqueous hydrogen peroxide solution containing strong base for hydrothermal reaction, and thus obtaining sea urchin titanate with a micro-nano hierarchical structure. The method can overcome some defects of titanate, titanic acid and titanium dioxide prepared into nanowire or nanotube structures.

Description

technical field [0001] The present application relates to the preparation of materials in the field of environmental protection and energy, and in particular to a preparation method of titanate, titanic acid and titanium dioxide. Background technique [0002] Titanates, titanic acid, and titanium dioxide have become a research hotspot in the field of materials due to their broad application prospects in lithium-ion batteries, photocatalysis, dye-sensitized solar cells, photolysis of water, and sensors. The properties of the above-mentioned titanate, titanic acid and titanium dioxide materials are closely related to their morphology. [0003] Compared with single crystal nanoparticles, one-dimensional materials (such as nanotubes, nanowires) can reduce the grain boundaries between particles, which is conducive to the transport of carriers in the direction of the long axis, and is ideal for assembling nano-functional devices, optoelectronics The ideal building block of the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00C01G23/047B01J21/06H01M4/131B82Y40/00B82Y30/00
CPCB01J21/063B01J35/004B01J35/026C01G23/00C01G23/005C01G23/047C01P2002/72C01P2004/03C01P2004/13C01P2004/16C01P2004/61H01M4/364H01M4/48Y02E60/10
Inventor 李建明
Owner NINGBO NANOJP NEW MATERIAL TECH CO LTD
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