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Green preparation method and application of spiny spherical TiO2

A thorn-like, green technology, applied in chemical instruments and methods, photosensitive equipment, titanium oxide/hydroxide, etc., can solve problems such as lack of important synthesis methods, improve photoelectric conversion performance, reduce process costs, and simplify the preparation process. Effect

Active Publication Date: 2019-11-15
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, few three-dimensional dendritic or spiny TiO 2 structure as a photoanode material, one of the important reasons may be the lack of an important method for synthesizing this type of material

Method used

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  • Green preparation method and application of spiny spherical TiO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A kind of prickly spherical TiO 2 The preparation method, the steps are as follows:

[0026] (1) Measure 67ml of absolute ethanol in a 200ml beaker to obtain solution A, and put the above solution in an ice-water bath;

[0027] (2) Measure 6ml of titanium tetrachloride solution, add it dropwise to solution A, stir for 5 minutes, add 67ml of secondary water and continue stirring for 10 minutes, and finally get a light yellow titanium tetrachloride solution (solution B);

[0028] (3) Add solution B into a 200ml beaker and react at 80°C for 2 hours to obtain a milky white homogeneous aqueous solution (solution C);

[0029] (4) Put the solution C in the beaker for 4 months, and after centrifugation, washing and drying, TiO 2 .

Embodiment 2

[0030] Embodiment 2: A kind of prickly spherical TiO 2 The green preparation method, the steps are as follows:

[0031] (1) Measure 20ml of absolute ethanol in a 200ml beaker to obtain solution A, and put the above solution in an ice-water bath;

[0032] (2) Measure 20ml of titanium tetrachloride solution, add it dropwise to solution A, stir for 5 minutes, add 114ml of secondary water and continue stirring for 10 minutes, and finally get a light yellow titanium tetrachloride solution (solution B) ;

[0033] (3) Add solution B into a 200ml beaker and react at 80°C for 1 hour to obtain a milky white homogeneous aqueous solution (solution C);

[0034] (4) Put the solution C in the beaker for 4 months, and after centrifugation, washing and drying, TiO 2 .

Embodiment 3

[0035] Embodiment 3: a kind of thorn ball TiO 2 The green preparation method, the steps are as follows:

[0036] (1) Measure 100ml of absolute ethanol in a 200ml beaker to obtain solution A, and put the above solution in an ice-water bath;

[0037] (2) Measure 6ml of titanium tetrachloride solution, add it dropwise to solution A, stir for 5 minutes, add 240ml of secondary water and continue stirring for 10 minutes, and finally obtain a light yellow titanium tetrachloride solution (solution B);

[0038] (3) Add solution B into a 200ml beaker and react at 80°C for 3 hours to obtain a milky white homogeneous aqueous solution (solution C);

[0039] (4) Put the solution C in the beaker for 4 months, and after centrifugation, washing and drying, TiO with the shape of spiny balls can be obtained. 2 .

[0040] Depend on figure 1 It can be seen that the TiO designed in the present invention 2 It has the characteristics of a three-dimensional structure, and its particle size is abo...

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Abstract

The invention discloses a green preparation method and application of spiny spherical TiO2. The method takes a cheap TiCl4 raw material as the titanium source and does not use any other auxiliary reagent. The method greatly simplifies the preparation process, improves the synthesis quality and reduces the process cost. At the same time, the synthesized TiO2 has the characteristics of relatively small particle size, small diameter of the one-dimensional basic structure, etc., the TiO2 involved in the invention can better coordinate the two aspects of requirements for dye adsorption and charge transmission, and has the potential of greatly improving the photoelectric conversion performance.

Description

technical field [0001] The application belongs to the technical field of preparation of photoanode materials for dye-sensitized solar cells, and relates to a green preparation method and application of prickly spherical TiO2. [0002] technical background [0003] Dye-sensitized solar cells (DSCs) have attracted worldwide attention due to their low cost, simple process, and relatively high photoelectric conversion efficiency, and have become one of the most promising solar cells currently. Dye-sensitized solar cells consist of three parts: a dye-sensitized nanocrystalline porous photoanode, a redox electrolyte, and a catalyst-loaded counter electrode. Among them, the development of high-efficiency photoanode materials is the key to improving the photoelectric conversion efficiency of this type of battery. High-efficiency photoanode materials usually have large specific surface area and fast charge transfer performance. Generally speaking, the photoanode film composed of nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053H01G9/20H01G9/042B82Y30/00B82Y40/00C02F1/30
CPCC01G23/0536H01G9/2031B82Y30/00B82Y40/00C02F1/30C01P2002/72C01P2004/04C01P2004/62C02F2305/10Y02E10/542
Inventor 王东亭苏萌苏嘉琪杨海洲
Owner LIAOCHENG UNIV
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