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CaTi2O5/CaTi2O4(OH)2 composite micro-nano structure material and preparation method thereof

A micro-nano structure and sheet-like structure technology, applied in the field of photocatalysis, can solve the problems of complex conditions of metastable micro-nano structure materials, no composite micro-nano structure materials, unfavorable industrial production, etc., and achieve excellent photocatalytic performance , Improve the use value and economic benefits, and promote the effect of application and development

Active Publication Date: 2015-09-30
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current prior art, templates or surfactants need to be added in the preparation of such micro-nano structured materials, and the process conditions are harsh. These preparation methods not only introduce impurities, but also require high equipment and high cost, which is not conducive to Industrial production
In particular, the conditions for synthesizing metastable phase micro-nano structure materials are extremely complex and difficult to control
At present, there is no information about CaTi 2 o 5 / CaTi 2 o 4 (OH) 2 Report on Composite Micro-Nano Structured Materials

Method used

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  • CaTi2O5/CaTi2O4(OH)2 composite micro-nano structure material and preparation method thereof
  • CaTi2O5/CaTi2O4(OH)2 composite micro-nano structure material and preparation method thereof
  • CaTi2O5/CaTi2O4(OH)2 composite micro-nano structure material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] Example CaTi 2 O 5 / CaTi 2 O 4 (OH) 2 The preparation method of composite micro-nano structure material, its steps are as follows:

[0023] (1) Dissolve butyl titanate in ethanol, according to the molar ratio of butyl titanate: ethanol = 1:5, stir until uniform to obtain liquid A;

[0024] (2) Dissolve anhydrous calcium chloride in distilled water, then mix with ethanol, and stir until uniform to obtain liquid B; according to the molar ratio of anhydrous calcium chloride: distilled water: ethanol = 1:50:10;

[0025] (3) According to the molar ratio of butyl titanate:anhydrous calcium chloride = 1:1, drop the above A solution into the B solution and stir for 10 minutes, then add 3M / L NaOH solution dropwise and continue stirring for 15 minutes, according to the molar ratio Ratio NaOH solution: distilled water = 0.02:1; then put it in a hydrothermal kettle, keep it at 180℃ for 36h, wash with distilled water 6 times to obtain CaTi 2 O 4 (OH) 2 Flake structure supports CaTi 2 O 5 N...

Embodiment 2

[0027] Example CaTi 2 O 5 / CaTi 2 O 4 (OH) 2 The preparation method of composite micro-nano structure material, its steps are as follows:

[0028] (1) Dissolve butyl titanate in ethanol, according to the molar ratio of butyl titanate:ethanol=1:10, stir until uniform to obtain liquid A;

[0029] (2) Dissolve anhydrous calcium chloride in distilled water, then mix it with ethanol, and stir until uniform to obtain liquid B; according to the molar ratio of anhydrous calcium chloride: distilled water: ethanol = 1:400:5;

[0030] (3) According to the molar ratio of butyl titanate:anhydrous calcium chloride = 1:1, drop the above A solution into the B solution and stir for 10 minutes, then add 3M / L NaOH solution dropwise and continue stirring for 15 minutes, according to the molar ratio Ratio NaOH solution: distilled water=0.06:1; then put it in a hydrothermal kettle, keep it at 160℃ for 36h, wash with distilled water 6 times to obtain CaTi 2 O 4 (OH) 2 Flake structure supports CaTi 2 O 5 Na...

Embodiment 3

[0032] Example CaTi 2 O 5 / CaTi 2 O 4 (OH) 2 The preparation method of composite micro-nano structure material, its steps are as follows:

[0033] (1) Dissolve butyl titanate in ethanol, according to the molar ratio of butyl titanate: ethanol = 1:8, stir until uniform to obtain liquid A;

[0034] (2) Dissolve anhydrous calcium chloride in distilled water, then mix with ethanol, and stir until uniform to obtain liquid B; according to the molar ratio of anhydrous calcium chloride: distilled water: ethanol = 1:200:10;

[0035] (3) According to the molar ratio of butyl titanate:anhydrous calcium chloride = 1:1, drop the above A solution into the B solution and stir for 10 minutes, and then add the 3M / L KOH solution dropwise and continue to stir for 5 minutes. Ratio KOH solution: distilled water=0.09:1; then put it in a hydrothermal kettle, keep it at 220℃ for 12h, wash with distilled water 6 times to obtain CaTi 2 O 4 (OH) 2 Flake structure supports CaTi 2 O 5 Nanoparticles of CaTi 2 O 5...

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Abstract

The invention discloses a CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material. The CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material is formed by bearing CaTi2O5 nano particles by a CaTi2O4(OH)2 sheet-shaped structure; the thickness of the CaTi2O4(OH)2 sheet-shaped structure is 85nm-100nm and the length and width average size is 1-2.5 microns; and the grain diameter of the CaTi2O5 nano particles is 0.5nm-1.5nm. Furthermore, the invention discloses a preparation method of the CaTi2O5 / CaTi2O4(OH)2 composite micro-nano structure material. The CaTi2O5 nano particles are borne by the CaTi2O4(OH)2 sheet-shaped structure so that the efficient photocatalytic activity is kept and the problems of high probability of clustering and difficulty for recycling are solved; and the use value and the economic benefits of the material in the industrial field are effectively improved. The preparation method has a simple process route, does not need a special device, does not need a surfactant or a template and is low in production cost, so that the preparation method is suitable for large-scale industrial production and the application and development of a photocatalytic technology can be promoted.

Description

Technical field [0001] The present invention relates to the technical field of photocatalysis, in particular to a CaTi 2 O 5 / CaTi 2 O 4 (OH) 2 Composite micro-nano structure material and preparation method thereof. Background technique [0002] Metastable phase material refers to a kind of material in a metastable state in thermodynamics. It is a metastable aggregate. Because of the energy barrier, it can exist stably under normal circumstances; and generally speaking, this kind of metastable phase crystal The material has high catalytic activity, so the metastable phase photocatalytic material has become one of the research hotspots. [0003] Perovskite oxides such as CaTi 2 O 5 And CaTi 2 O 4 (OH) 2 Because of their unique and excellent metastable phase structure, the application of their photocatalytic properties in the industrial field has received more and more research and attention. Nano photocatalysts show great potential and long-term vitality in the field of photocataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04
Inventor 董伟霞顾幸勇包启富陈馨罗婷赵高凌
Owner JINGDEZHEN CERAMIC INSTITUTE
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