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Preparation method and purpose of Zn mixed SnO2 ball with mesoporous micro/nano hierarchical structure

A hierarchical structure and mesoporous technology, applied in the direction of photosensitive equipment, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problem of low adsorption efficiency, achieve the effects of protecting the environment, facilitating transmission, and extending life

Inactive Publication Date: 2012-10-10
KUSN INNOVATION INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But our commonly used dyes, such as N719, N3 have low adsorption efficiency in the infrared region, and large particle size can improve its light absorption effect in this region

Method used

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  • Preparation method and purpose of Zn mixed SnO2 ball with mesoporous micro/nano hierarchical structure
  • Preparation method and purpose of Zn mixed SnO2 ball with mesoporous micro/nano hierarchical structure
  • Preparation method and purpose of Zn mixed SnO2 ball with mesoporous micro/nano hierarchical structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Add 0.6mmol of tin tetrachloride pentahydrate, 1.2mmol of zinc acetate dihydrate, 7.2mmol of sodium hydroxide and 3.6mmol of urea into 15ml and 15ml of ethylenediamine solutions, and stir for 0.5~1h with magnetic force to obtain a white suspension liquid;

[0028] (2) Pour the white suspension into a 50ml polytetrafluoroethylene-lined stainless steel autoclave, heat up to 200°C, react for 24 hours, and cool with the furnace after the reaction;

[0029] (3) Centrifuge the reaction product to obtain a solid powder, then wash it with distilled water, then dry it at 60°C for 6~24h, and put it in a muffle furnace for calcination at 500°C for 30 minutes to obtain a white mesoporous microstructure. / Zn-doped SnO with nano-hierarchical structure 2 ball.

[0030] The products were analyzed by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).

[0031] figure 1 It is the XRD figure of e...

Embodiment 2

[0037] The steps are basically the same as Example 1, except that the molar ratio of tin tetrachloride pentahydrate, zinc gluconate, sodium hydroxide and urea is 1:2:12:2.

[0038] The product that makes is basically consistent with embodiment 1, and its scanning electron microscope picture is as Image 6 Shown, but the sample is not as uniform as Example 1.

Embodiment 3

[0040] Step is substantially the same as example 1, except that the reaction time is 16 hours.

[0041] The product that makes is basically consistent with embodiment 1, and its scanning electron microscope picture is as Figure 7 shown, but mesoporous micro / nano-hierarchical Zn-doped SnO 2 The nanowires on the surface of the sphere are sparser than those in Example 1.

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Abstract

The invention relates to a preparation method and a purpose of a Zn mixed SnO2 ball with a mesoporous micro / nano hierarchical structure. The preparation method comprises the following steps: adding stannic chloride pentahydrate, zinc gluconate, sodium hydroxide and urea in a mixed solution of water and ethylenediamine, then reacting at the temperature of 170 to 200 DEG C, and finally washing and drying sequentially, and calcining for 30 to 60 minutes at the temperature of 300 to 500 DEG C to obtain the Zn mixed SnO2 ball with the mesoporous micro / nano hierarchical structure, wherein the mole ratio of stannic chloride pentahydrate, zinc gluconate, sodium hydroxide and urea is (1:2:12:2) to (1:2:12:6), the volume ratio of water and ethylenediamine is (2:1) to (1:2), and the reaction time is 4 to 24 hours. The preparation method has the characteristics of simplicity in operation, low cost, high purity of the product and the like. Through the invention, the photoelectric conversion efficiency of a DSSC (Dye Sensitized Solar Cell) is improved. In the preparation method, only heating and filtering in the traditional chemical industry are adopted, thereby facilitating the large-scale industrial production.

Description

technical field [0001] The invention relates to a Zn-doped SnO with a mesoporous micro / nano hierarchical structure 2 The preparation method of the sphere and its application as a photoelectrode of a dye-sensitized cell (DSSC) belong to the technical field of new materials. Background technique [0002] As the energy crisis and environmental pollution become more and more serious, all walks of life pay more and more attention to the sustainable development of energy consumption. In particular, it has aroused the attention and favor of clean and renewable energy from various governments. New energy has become an international academic and The focus of research and development in various countries. As a renewable energy source, solar energy has the incomparable advantages of other energy sources, such as inexhaustible, inexhaustible, safe, pollution-free, not restricted by geographical conditions, etc., making it one of the main directions of new energy development. [0003] ...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/048H01G9/20
CPCY02E10/542Y02P70/50
Inventor 周勇李政道邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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