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Preparation method of CaTi2O5tremella-like micro-nano structure photocatalyst and product prepared by method

A technology of micro-nano structure and photocatalyst, which is applied in the field of photocatalysis, can solve the problems of unfavorable industrial production, harsh process conditions and high equipment requirements, and achieve the effects of improving use value and economic benefits, strong controllability and low production cost

Active Publication Date: 2015-08-26
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

Method used

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  • Preparation method of CaTi2O5tremella-like micro-nano structure photocatalyst and product prepared by method
  • Preparation method of CaTi2O5tremella-like micro-nano structure photocatalyst and product prepared by method
  • Preparation method of CaTi2O5tremella-like micro-nano structure photocatalyst and product prepared by method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In this example, CaTi 2 o 5 The preparation method of the fungus-shaped micro-nano structure photocatalyst, the steps are as follows:

[0021] (1) Dissolve butyl titanate in ethanol, stir until uniform according to the molar ratio of butyl titanate: ethanol = 1:5, then add distilled water dropwise to produce a white precipitate, wash with distilled water, filter, and dry to obtain White powder A containing titanium;

[0022] (2) Dissolve calcium chloride dihydrate in distilled water, then add ethanol, stir until uniform to obtain liquid B; according to molar ratio calcium chloride dihydrate: distilled water: ethanol=1: 50: 10;

[0023] (3) According to the molar ratio of calcium chloride dihydrate: butyl titanate = 1: 1, the above liquid B is dripped into the powder A drop by drop under stirring state, and then the HCl solution is gradually added dropwise to adjust the pH value of the system to 2, Continue to stir for 15 minutes and mix, then put it in a hydrothermal...

Embodiment 2

[0025] In this example, CaTi 2 o 5 The preparation method of the fungus-shaped micro-nano structure photocatalyst, the steps are as follows:

[0026] (1) Dissolve isopropyl titanate in propanol, according to the molar ratio of isopropyl titanate: propanol = 1:6, stir until uniform, then add distilled water drop by drop to produce white precipitate, wash with distilled water, filter , after drying, white powder A containing titanium is obtained;

[0027] (2) Calcium chloride dihydrate is dissolved in distilled water, then propanol is added, and stirred until uniformly to obtain liquid B; according to the molar ratio of calcium chloride dihydrate: distilled water: propanol=1: 50: 5;

[0028] (3) According to the molar ratio of calcium chloride dihydrate: isopropyl titanate = 1: 1.2, drop the above liquid B into the powder A dropwise under stirring, and then gradually add HCl solution dropwise to adjust the pH of the system to 3 , continue to stir for 15 minutes, put it in a h...

Embodiment 3

[0030] In this example, CaTi 2 o 5 The preparation method of the fungus-shaped micro-nano structure photocatalyst, the steps are as follows:

[0031] (1) Dissolve titanium chloride in butanol, stir until uniform according to the molar ratio of titanium chloride: butanol=1:10, then add distilled water dropwise to produce a white precipitate, wash with distilled water, filter, and dry to obtain White powder A containing titanium;

[0032] (2) Dissolve calcium chloride dihydrate in distilled water, then add butanol, stir until uniform to obtain liquid B; according to the molar ratio calcium chloride dihydrate: distilled water: butanol=1: 400: 5;

[0033] (3) According to the molar ratio of calcium chloride dihydrate: titanium chloride = 1: 1.5, drop the above liquid B into the powder A drop by drop under stirring, then gradually add HCl solution dropwise to adjust the pH value of the system to 4, continue After stirring for 10 minutes, put it in a hydrothermal kettle and keep ...

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Abstract

The invention discloses a preparation method of a CaTi2O5tremella-like micro-nano structure photocatalyst, which comprises the steps of dissolving a titanium compound in an organic solvent, adding distilled water to form powder A, dissolving calcium chloride dihydrate in the distilled water, adding an organic solvent, stirring uniformly to form liquid B, adding the liquid B into the powder A, regulating a pH (potential of hydrogen) value of a system to 2-4, stirring and mixing, putting in a hydrothermal kettle for hydrothermal reaction, and washing a reaction product with the distilled water to form the CaTi2O5tremella-like micro-nano structure photocatalyst. In addition, the invention further discloses a product prepared by the preparation method. The method has a simple process route and low production cost, does not require a special device; the pure CaTi2O5tremella-like micro-nano structure photocatalyst with outstanding photocatalysis performance is obtained without a surfactant or a template; the yield and controllability are high; the product still keeps a higher photocatalytic degradation rate after multiple reuse and is easy to recover; and the use value and economic benefits of the product in the industrial circle are effectively improved.

Description

technical field [0001] The invention relates to the field of photocatalysis technology, in particular to a CaTi with micro-nano structure 2 o 5 A method for preparing a high-efficiency photocatalyst and a product thereof. Background technique [0002] With the rapid development of economic production, people's living standards have been greatly improved and promoted social progress and development; but at the same time, the rapid advancement of industrial processes has led to increasingly serious environmental pollution, especially industrial wastewater containing A large number of toxic substances have the characteristics of complex chemical composition, and direct discharge will seriously endanger human health and destroy the ecological environment. Therefore, wastewater treatment has become a global concern, and a lot of research has been done on it, among which photochemical reactions have been widely used in the field of environmental pollution control. [0003] Phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02C02F1/30C01G23/00
Inventor 董伟霞顾幸勇包启富赵高凌
Owner JINGDEZHEN CERAMIC INSTITUTE
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