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A kind of carbon dioxide crystal film on the surface of activated carbon fiber and its preparation method

A technology of activated carbon fiber and crystal, which is applied to the YBO3 crystal film on the surface of activated carbon fiber and the field of its preparation, and achieves the effects of adjustable size, good binding force and adjustable density

Inactive Publication Date: 2018-08-31
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of YBO based on activated carbon fiber 3 Crystal thin film materials are rarely reported

Method used

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  • A kind of carbon dioxide crystal film on the surface of activated carbon fiber and its preparation method
  • A kind of carbon dioxide crystal film on the surface of activated carbon fiber and its preparation method
  • A kind of carbon dioxide crystal film on the surface of activated carbon fiber and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 0.0575g of yttrium nitrate hexahydrate and 0.0093g of boric acid in 15.0mL of deionized water. The molar concentrations of yttrium ions and borate ions in the solution are both 0.01 mol / liter; The concentration is 0.05 mol / liter, which is equal to 5 times the molar number of yttrium ions; stir until the reactants are completely dissolved; immerse the activated carbon fibers in the above solution for 10 hours. The final solution together with the activated carbon fiber was hydrothermally treated at 85°C for 24 hours, and then heated to 210°C and kept for 12 hours; Surface YBO 3 crystal film.

[0026] figure 1 Be the XRD collection of illustrative plates of embodiment 1 product, the characteristic diffraction peak of crystalline material and YBO on this collection of collections 3 The standard XRD pattern (JCPDS No 16-0277) matches, indicating that the crystal structure of the crystalline product is consistent with that of YBO 3 Same, is a single pure phase. ...

Embodiment 2

[0028] 0.1149g of yttrium nitrate hexahydrate and 0.0185g of boric acid were dissolved in 15.0mL of deionized water, and the molar concentration of yttrium ion and borate ion in the solution was 0.02 mol / liter; The concentration is 0.05 mmol / L, which is equal to 2.5 times the number of moles of yttrium ions; stir until the reactants are completely dissolved; immerse the activated carbon fibers in the above solution for 10 hours. The final solution together with the activated carbon fibers was hydrothermally treated at 90°C for 20 hours, then heated to 210°C and kept for 12 hours; after the reaction, the reaction kettle was naturally cooled to room temperature, the activated carbon fibers were taken out, cleaned and dried to obtain Surface YBO 3 crystal film.

[0029] image 3 It is the SEM photograph of the product of embodiment 2, the spherical YBO coated on the activated carbon fiber surface 3 The crystal grains have a diameter of 200 nanometers to 500 nanometers.

Embodiment 3

[0031] Dissolve 0.1436g of yttrium nitrate hexahydrate and 0.0232g of boric acid in 15.0mL of deionized water. The molar concentration of yttrium ions and borate ions in the solution is 0.025 mol / liter; It is 0.1 mole / liter, which is equal to 4 times the number of moles of yttrium ions; stir until the reactant is completely dissolved; immerse the activated carbon fiber in the above solution for 10 hours. The final solution together with the activated carbon fiber was hydrothermally treated at 100°C for 12 hours, then the temperature was raised to 210°C and kept for 12 hours; after the reaction, the reaction kettle was naturally cooled to room temperature, the activated carbon fiber was taken out, cleaned and dried to obtain Surface spherical YBO 3 crystal film.

[0032] Figure 4 It is the SEM photograph of the product of embodiment 3, the spherical YBO coated on the activated carbon fiber surface 3The crystal grains have a diameter of 400 nanometers to 700 nanometers.

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Abstract

The invention discloses a YBO3 crystal film with an active carbon fiber surface, and a production method thereof. The method comprises the following steps: dissolving the same mole of yttrium nitrate hexahydrate and boric acid in deionized water to make the mole concentration of yttrium ions in the obtained solution be 0.01-0.025 mol / L; adding urea with the mole 2.5-5 times the mole of the yttrium ions; immersing active carbon fibers in the solution, and carrying out hydrothermal treatment at 85-100 DEG C for a certain period of time; continuously heating the hydrothermal treated active carbon fibers to 210 DEG C, and carrying out heat insulation for 12 h; and cleaning the hydrothermal treated active carbon fibers, and drying the cleaned hydrothermal treated active carbon fibers to obtain the YBO3 crystal film with the active carbon fiber surface. The active carbon fiber substrate is combined with spherical YBO3 crystals with isotropic morphology characteristics, so the YBO3 crystal film with the active carbon fiber surface has the advantages of uniformity in film formation, adjustable crystal size, and stable and uniform surface performances, and is an ideal material for manufacturing cathode ray tubes, electroluminescent displays and field emission display devices.

Description

technical field [0001] The invention relates to a composite crystal film based on a conductive base material surface and a preparation method thereof, in particular to a YBO on the surface of an activated carbon fiber 3 Crystal thin film and its preparation method. Background technique [0002] Activated carbon fiber (ACF) has excellent qualities such as rich and developed pore structure, and can be used as adsorption material, catalyst carrier and electrode material to meet the application needs of many fields such as environmental protection, chemical industry, food, electronics and electrochemistry. Since the rich pore structure on the surface of activated carbon fibers can provide a large number of nucleation centers for crystallization behavior when combined with other materials, in recent years, the research and development of ACF as a composite material substrate has attracted great attention from many researchers at home and abroad. [0003] YBO 3 It is a material ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
CPCC09K11/7712
Inventor 金达莱王彪王龙成汪丽娜席珍强
Owner ZHEJIANG SCI-TECH UNIV
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