Method for preparing sea urchin shaped titanium dioxide hollow microsphere

A technology of titanium dioxide and hollow microspheres, applied in the direction of titanium dioxide, titanium oxide/hydroxide, hybrid capacitor electrodes, etc., can solve the problems of complex electrode film preparation procedures, achieve excellent photoelectric conversion performance, the method is simple and easy to operate, and has wide application Foreground effect

Inactive Publication Date: 2017-02-15
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gradient combination of two different morphologies of titanium dioxide requires the preparation of a series of slurries with different proportions of morphological titanium dioxide, which makes the preparation procedure of the electrode film very complicated.

Method used

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  • Method for preparing sea urchin shaped titanium dioxide hollow microsphere
  • Method for preparing sea urchin shaped titanium dioxide hollow microsphere
  • Method for preparing sea urchin shaped titanium dioxide hollow microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Add 0.5g of titanium dioxide hollow microspheres (see Comparative Example 1 for the synthesis method) into 50ml of 10mol / L NaOH solution, stir and disperse for 10min, then transfer to a polytetrafluoroethylene reactor (with stainless steel lining);

[0039] 2) Seal the polytetrafluoroethylene reactor and place it in an oven, heat it to 120°C, and keep it warm for 1 hour. After the reaction is completed, naturally cool the polytetrafluoroethylene reactor to room temperature (20-30°C), and put the reaction The resulting mixed system was filtered to obtain filter residue A, which was washed with distilled water to neutrality (pH=7), and dried naturally;

[0040] 3) Add 600 ml of 0.1 mol / L dilute hydrochloric acid to the filter residue A that was naturally dried in step 2), and after magnetic stirring for 12 hours, filter to obtain filter residue B, and wash filter residue B with distilled water until neutral (pH=7) , to dry naturally;

[0041] 4) Put the naturally-drie...

Embodiment 2

[0045] 1) Add 0.5g of titanium dioxide hollow microspheres (see Comparative Example 1 for the synthesis method) into 50ml of 10mol / L NaOH solution, stir and disperse for 10min, then transfer to a polytetrafluoroethylene reactor (with stainless steel lining);

[0046] 2) Seal the polytetrafluoroethylene reactor and put it in an oven, heat it to 120°C, and keep it warm for 2 hours. After the reaction is completed, naturally cool the polytetrafluoroethylene reactor to room temperature (20-30°C), and put the reaction The resulting mixed system was filtered to obtain filter residue A, which was washed with distilled water to neutrality (pH=7), and dried naturally;

[0047] 3) Add the naturally-dried filter residue A in step 2) into 600ml of 0.1mol / L hydrochloric acid, and after magnetic stirring for 12 hours, filter to obtain the filter residue B, which is washed with distilled water until neutral (pH=7), dry naturally;

[0048] 4) Put the naturally-dried filter residue B in step ...

Embodiment 3

[0052] 1) Add 0.5g of titanium dioxide hollow microspheres (see Comparative Example 1 for the synthesis method) into 50ml of 10mol / L NaOH solution, stir and disperse for 10min, then transfer to a polytetrafluoroethylene reactor (with stainless steel lining);

[0053] 2) Seal the polytetrafluoroethylene reactor and place it in an oven, heat it to 120°C, and keep it warm for 3 hours. After the reaction is completed, naturally cool the polytetrafluoroethylene reactor to room temperature (20-30°C), and put the reaction The resulting mixed system was filtered to obtain filter residue A, which was washed with distilled water to neutrality (pH=7), and dried naturally;

[0054] 3) Add 600 ml of 0.1 mol / L dilute hydrochloric acid to the filter residue A that was naturally dried in step 2), and after magnetic stirring for 12 hours, filter to obtain filter residue B, and wash filter residue B with distilled water until neutral (pH=7) , to dry naturally;

[0055] 4) Put the naturally-dri...

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Abstract

The invention discloses a method for preparing sea urchin shaped titanium dioxide hollow microsphere. The method comprises the steps that 1, dispersing ordinary titanium dioxide hollow microspheres in a 10 mol / L solution, then transferring to a polytetrafluoroethylene reactor; 2, sealing the polytetrafluoroethylene reactor then placing in an oven, heating to 120 to 150 DEG C, and thermal insulation reacting for 1-3 hours, after completion of the reaction, cooling naturally to room temperature, filtering, and resulting in filter residue A, rinsing the filter residue A with distilled water to neutral, and drying naturally; 3, dispersing the residue A dried naturally in diluted hydrochloric acid, rinsing, filtrating, and resulting in filter residue B, rinsing the residue B with distilled water to neutral, and drying naturally; 4, placing the naturally dried residue B in a muffle furnace, heating to 400 DEG C at the heating rate of 1 DEG C / min, after 1 hour thermal insulation, cooling naturally to room temperature. The sea urchin shaped titanium dioxide hollow microsphere prepared by the method has large specific surface area and strong light absorption performance, and exhibits excellent photoelectric conversion performance in the area of dye sensitization solar cell.

Description

technical field [0001] The invention relates to the technical field of preparation of new materials for solar cells, in particular to a method for preparing sea urchin-shaped titanium dioxide hollow microspheres. Background technique [0002] In recent years, dye-sensitized solar cells (DSSCs) are considered to be the most potential new solar cells to replace traditional silicon solar cells due to their low cost and easy preparation into flexible devices. Titanium dioxide is the most ideal dye-sensitized photoelectric conversion material due to its good biochemical inertness, light corrosion resistance and chemical corrosion resistance. [0003] It has been reported in the literature that the morphology, pore structure, and crystallinity of titanium dioxide are important factors affecting the photoelectric conversion efficiency of dye-sensitized solar cells. So far, titanium dioxide in the form of nanoparticles, nanotubes, nanosheets, nanowires, and nanospheres has been use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047H01G11/24H01G11/46
CPCC01G23/047C01P2002/72C01P2002/84C01P2004/03C01P2004/04C01P2006/12C01P2006/14C01P2006/17H01G11/24H01G11/46Y02E60/13
Inventor 吕康乐伍晓锋李玫李覃孙杰黄涛唐和清杜冬云唐定国叶恒朋李襄宏
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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