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Method for preparing modified glass microspheres

A technology of modification of glass microspheres, applied in the field of solar cells, can solve the problems of less research and achieve the effect of ensuring compactness

Inactive Publication Date: 2011-04-06
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on the preparation of each research group, and the high-level research mainly uses the 400nm titanium dioxide powder of Japan Nikki Catalytic Chemicals Co., Ltd.

Method used

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  • Method for preparing modified glass microspheres
  • Method for preparing modified glass microspheres
  • Method for preparing modified glass microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0017] 1) First mix 0.1mol titanyl sulfate and water at 15-20°C with a titanium ion concentration of 2mol / L, then let it stand for 12 hours for clarification, filter and co-precipitate with 1mol / L ammonia water and titrate to 200ml deionized In water, until the pH value is equal to 7, the obtained white precipitate is centrifuged and washed until it is washed with Ba(NO 3 ) 2 The solution had no detectable residual SO 4 2- ions, then at 60°C, press Ti 4+ : oxalic acid: the molar ratio of hydrogen peroxide is 1: 5: 5 is dissolved, and then the pH value of this solution is adjusted to 7-8 with ammonia water, obtains titanium dioxide sol precursor after standing for 12 hours;

[0018] 2) Then, the titanium dioxide sol precursor was hydrothermally treated in a hydrothermal kettle at 90° C. for 20 hours to obtain a yellow anatase phase titanium dioxide sol;

[0019] 3) Finally, glass beads with an average particle size of 350nm are mixed with the anatase phase titanium dioxide ...

Embodiment 2

[0021] 1) First, 0.1mol of TiCl 4 With 400ml of 1mol / L NaHCO 3 Co-precipitate and titrate the white precipitate obtained in 100ml deionized water, centrifuge and wash 3 times, and then press Ti at 50°C 4+ :, citric acid: the molar ratio of hydrogen peroxide is 1: 5: 6 to dissolve, and then the pH value of this solution is adjusted to 7-8 with ammonia water, after standing for 12 hours, the titanium dioxide sol precursor is obtained;

[0022] 2) Then, the titanium dioxide sol precursor was hydrothermally treated in a hydrothermal kettle at 250° C. for 4 hours to obtain a yellow anatase phase titanium dioxide sol;

[0023] 3) Finally, glass microspheres with an average particle size of 350nm were mixed with anatase phase titanium dioxide sol according to 10g / ml, and then placed in an agate ball mill jar, and after ball milling for 24 hours, it was taken out and cooled naturally after heat treatment at 250 degrees for 2 hours to obtain suitable TiO2-modified glass microspheres ...

Embodiment 3

[0025] 1) First titrate the white precipitate obtained in 200ml of deionized water with 0.1mol of titanium sulfate and 400ml of 1mol / L NaOH co-precipitation titration, centrifuge and wash 3 times, and then press Ti at 80°C 4+ :, tartaric acid: the mol ratio of hydrogen peroxide is 1: 10: 10 and dissolves, and then the pH value of this solution is adjusted to 7-8 with ammoniacal liquor, obtains titanium dioxide sol precursor after standing for 12 hours;

[0026] 2) Then, the titanium dioxide sol precursor was hydrothermally treated in a hydrothermal kettle at 160° C. for 6 hours to obtain a yellow anatase phase titanium dioxide sol;

[0027] 3) Finally, mix glass beads with a particle size of 300-700nm with anatase phase titanium dioxide sol at 5g / ml, and then place them in an agate ball mill jar. After ball milling for 24 hours, take them out and heat them at 250 degrees for 2 hours, then cool naturally. TiO2-modified glass microspheres suitable for light scattering of dye-sen...

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Abstract

The invention discloses a method for preparing modified glass microspheres, which comprises the steps of: firstly, coprecipitating a titanium source and a basic hydrolysis reaction solution in water, reacting to obtain a white titanium hydroxide deposit; obtaining a titanium dioxide sol precursor after carrying out washing, peptizing and aging; then carrying out hydro-thermal treatment to obtain anatase phase titanium dioxide sol; mixing the anatase phase titanium dioxide sol with glass microspheres; mill-grinding, and cooling after thermal treatment to obtain the titanium dioxide modified glass microspheres for light scattering of a dye sensitization solar battery. The finished glass microsphere product prepared by using the method for preparing the modified glass microsphere is wrapped with well-crystallized anatase phase titanium dioxide particles on the surface; and the mill-ground glass microspheres have irregular shapes, and have maximum particle diameter of about 400nm and minimum particle diameter of about 200nm, which ensures the compactness of the glass microspheres subjected to film formation.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a modified glass bead for light scattering of a dye-sensitized solar cell, in particular to a preparation method of a modified glass bead for light scattering of a dye-sensitized solar cell. Background technique [0002] As an important semiconductor material, titanium dioxide is widely used in dye-sensitized solar cells and photocatalysis-related fields. To improve the photoelectric performance of dye-sensitized solar cells, improving the utilization rate of sunlight by photoanodes is an effective way One [1] [Kuang, D.; Wang, P.; Ito, S.; Zakeeruddin, S.M.; Gratzel, M.J.Am.Chem.Soc., 2006, 128:7732-7745]. Domestic and foreign research [2, 3] [2] [Barbé C.J., Arendse F., Comte P., Jirousek M., Lenzmann F., Shklover V., M., J.Am.Ceram.Soc.1997, 80, 3157-3171], [3][ M. Chem. Lett, 2005, 34 (1): 8-13] shows that the light scattering layer of titanium dioxide with large partic...

Claims

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Application Information

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IPC IPC(8): C03C17/23H01G9/042H01G9/20H01M14/00H01L51/48
CPCY02E10/542Y02E10/549
Inventor 刘文秀姜春华
Owner IRICO
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