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Method for preparing mesoporous titanium dioxide by template method and application of mesoporous titanium dioxide to preparation of dye-sensitized solar cells

A technology of mesoporous titanium dioxide and template method, applied in the field of solar cells, can solve the problem of small specific surface area of ​​titanium dioxide, and achieve the effect of narrow distribution

Inactive Publication Date: 2012-07-18
NANJING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of small specific surface area of ​​existing titanium dioxide, and to provide a method for preparing mesoporous titanium dioxide by template method

Method used

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  • Method for preparing mesoporous titanium dioxide by template method and application of mesoporous titanium dioxide to preparation of dye-sensitized solar cells
  • Method for preparing mesoporous titanium dioxide by template method and application of mesoporous titanium dioxide to preparation of dye-sensitized solar cells
  • Method for preparing mesoporous titanium dioxide by template method and application of mesoporous titanium dioxide to preparation of dye-sensitized solar cells

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 5.34 g of poly(ethylene glycol)-intercalated-poly(propylene glycol)-intercalated-poly(ethylene glycol) (CAS No. 9003-11-6, purchased from Sigma), add 173 mL of deionized water, and then add 61.34 mg Ammonium fluoride (NH4F), 3.974 g trimethylbenzene (TMB), 27.4 mL concentrated HCl (36%, w / w). After stirring for 45 minutes at a temperature of 40° C. and a rotational speed of 300 r / min, 11.74 g of tetraethyl orthosilicate (TEOS) and 4 g of titanium isopropoxide (TTIP) were added to continue stirring for 20 hours. After the reaction, the obtained colloid was transferred into an autoclave, heated in water at 120°C for 20 hours, filtered, and dried at 70°C. When removing the template of the mesoporous material, weigh 1.5g of the above-mentioned dried powder, add 10mL of concentrated nitric acid (HNO 3 ) and 7mL of hydrogen peroxide (H 2 o 2 ), heated in an autoclave at 100°C for 12 hours, filtered, added 10mL of 0.2-40% (mass) HF solution to react for 10 hours, and ...

Embodiment 2

[0035] Weigh poly(ethylene glycol)-intercalated-poly(propylene glycol)-intercalated-poly(ethylene glycol) 5.34g, add 173mL deionized water, add 61.34mg ammonium fluoride (NH 4 F), 3.974 g of trimethylbenzene (TMB), 27.4 mL of concentrated HCl (36%, w / w). After stirring for 45 minutes at a temperature of 40° C. and a rotational speed of 300 r / min, 11.74 g of tetraethyl orthosilicate (TEOS) and 8 g of titanium isopropoxide (TTIP) were added to continue stirring for 26 hours. After the reaction, the obtained colloid was transferred into an autoclave, heated in water at 120°C for 20 hours in a closed state, filtered, and dried at 70°C. When removing the template of the mesoporous material, weigh 1.5g of the above-mentioned dried powder, add 10mL of concentrated nitric acid (HNO 3 ) and 7mL of hydrogen peroxide (H 2 o 2 ), sealed in an autoclave, heated at 100°C for 12 hours, filtered, added 10mL of 0.2-40% HF solution to react for 10 hours, then washed with deionized water unti...

Embodiment 3

[0037] Weigh poly(ethylene glycol)-intercalated-poly(propylene glycol)-intercalated-poly(ethylene glycol) 5.34g, add 173mL deionized water, add 61.34mg ammonium fluoride (NH 4 F), 3.974 g of trimethylbenzene (TMB), 27.4 mL of concentrated HCl (36%, w / w). After stirring for 45 minutes at a temperature of 40° C. and a rotational speed of 300 r / min, 11.74 g of tetraethyl orthosilicate (TEOS) and 12 g of titanium isopropoxide (TTIP) were added to continue stirring for 24 hours. After the reaction, the obtained colloid was transferred into an autoclave, heated in water at 120°C for 20 hours in a closed state, filtered, and dried at 70°C. When removing the template of the mesoporous material, weigh 1.5g of the above-mentioned dried powder, add 10mL of concentrated nitric acid (HNO 3 ) and 7mL of hydrogen peroxide (H 2 o 2 ), sealed in an autoclave, heated at 100°C for 12 hours, filtered, added 10mL of 0.2-40% HF solution to react for 10 hours, then washed with deionized water unt...

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Abstract

The invention provides a method for preparing mesoporous titanium dioxide by a template method. The method comprises the following steps that: poly(glycol)-embedded-poly(propylene glycol)-embedded-poly(glycol) is added into water, then, ammonium fluoride and trimethylbenzene are added and are uniformly stirred with the water, and template solution is obtained; tetraethyl orthosilicate and isopropyl titanate are added into the obtained template solution and are uniformly stirred with the obtained template solution, then, the materials are transferred to an autoclave and are heated for 20 to 26 hours at 110 to 130 DEG C, and powder is obtained through filtering and drying; and the obtained powder is added into mixed solution of concentrated nitric acid and hydrogen peroxide, organic matters in the powder are removed through oxidation, and the mesoporous titanium dioxide is obtained. The mesoporous material obtained by adopting the method has the advantages that the bore diameter size distribution range is narrow, and the specific surface area is large; and dye-sensitized solar cells prepared from the mesoporous material have the advantages that the open circuit voltage can reach 0.74 V, the cell efficiency can reach 7.51 percent, and the filling factor can reach 75.7 percent.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a method for preparing mesoporous titanium dioxide by using a template method and its application in preparing dye-sensitized solar cells. Background technique [0002] From the perspective of the development trend of solar cell product structure, although crystalline silicon cells still occupy a dominant position, the future development prospects of thin-film cells are more promising. First of all, the cost of thin-film batteries is cheap, and the overall price is less disadvantageous compared with other energy sources after being loaded into photovoltaic systems. Once the national subsidy policy reaches a higher level, the demand for installed capacity in the photovoltaic industry will be greatly released, and these more options will be In the field of thin-film batteries; secondly, from the perspective of industrial policy, thin-film batteries have entered the key items o...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00H01G9/04H01G9/20
CPCY02E10/542Y02P70/50
Inventor 朱凯邓芸顾军邹志刚
Owner NANJING UNIV
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