Method for preparing nano-structured Zn2SnO4 on stainless steel wires

A nanostructure, stainless steel wire technology, applied in chemical instruments and methods, inorganic chemistry, electrical components, etc., can solve the problems of unfavorable development of flexible DSSCs, organic polymers are not resistant to high temperature, and metal flakes are unfavorable for light projection, etc. Conversion efficiency, wide application temperature, and the effect of facilitating the transmission of electrons

Active Publication Date: 2012-08-15
KUSN INNOVATION INST OF NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in terms of flexible DSSCs, the substrates are mainly organic polymers and metal flakes, but organic polymers are not resistant to high temperatures, metal flakes are not conducive to light projection, and their flexibility is not good.
Both substrates are not conducive to the development of flexible DSSCs

Method used

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  • Method for preparing nano-structured Zn2SnO4 on stainless steel wires
  • Method for preparing nano-structured Zn2SnO4 on stainless steel wires
  • Method for preparing nano-structured Zn2SnO4 on stainless steel wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Add 0.6mmol of tin tetrachloride pentahydrate, 1.2mmol of zinc acetate dihydrate and 7.2mmol of sodium hydroxide into a solution of 15mL of ethylenediamine and 15mL of water, and stir for 0.5 to 1h by magnetic force;

[0039] (2) Pour the mixture obtained in (1) into a 50ml polytetrafluoroethylene-lined stainless steel autoclave, then put the cleaned stainless steel wire into the autoclave, heat up to 200°C, and react for 24 hours. After cooling with the furnace;

[0040] (3) Take out the stainless steel wire, wash it with distilled water, and then irradiate it with infrared light to achieve the drying effect.

[0041] The products were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM).

[0042] refer to figure 1 ,in figure 1 Be embodiment 1, the XRD figure of 2 and 3 products, the result shows that the present embodiment 1-3 product is Zn 2 SnO 4 , without any impurities.

[0043] figure 2 It ...

Embodiment 2

[0046]The steps are basically the same as Example 1, except that the solvent is pure water.

[0047] The morphology of the prepared product is a nanosheet, and its scanning electron microscope picture is as follows: Figure 4 As shown, the side length of the hexagonal sheet is about 300-500nm, the thickness is about 80-100nm, and the hexagonal sheet grows uniformly and densely on the stainless steel mesh.

[0048] Figure 5 It is the TEM figure of embodiment 2 product, Figure 5 (b) High-resolution TEM image of a monolithic nanosheet. It can be seen from the figure that the crystallization is good.

Embodiment 3

[0050] The steps are basically the same as in Example 1, except that the solvent is 10 mL of ethylenediamine and 20 mL of water.

[0051] The morphology of the prepared product is nanoparticles, and its scanning electron microscope picture is as follows: Image 6 shown.

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Abstract

The invention relates to a method for preparing nano-structured Zn2SnO4 on stainless steel wires. The method includes steps: adding tin chloride pentahydrate, zinc acetate dihydrate and sodium hydroxide into ethylenediamine and aqueous liquor, dispersing mixture uniformly and placing the mixture into a cleaned stainless steel wire mesh; leading the stainless steel wire mesh to react at the temperature ranging from 170 DEG C to 200 DEG C and taking out the reacted stainless steel wire mesh; and obtaining two nano-structured Zn2SnO4 products with different shapes by means of regulating the proportion of the ethylenediamine to water. The molar ratio of the tin chloride pentahydrate to the zinc acetate dihydrate to the sodium hydroxide is 1:2:6-1:3:4, the proportion of the ethylenediamine to the water is 30:0-0:30, and the reaction time ranges from 12 hours to 24 hours. The method has the advantages that operation is simple, cost is low, the purity of the products is high, and the like. The nano-structured Zn2SnO4 products with the different shapes are more favorable for electronic transmission; and by the aid of a stainless steel base, on the one hand, absorption of a photoelectrode to scattered light and reflected light is improved, on the other hand, adaptability of a photovoltaic cell to transport environments, installation environments and work environments are greatly enhanced.

Description

technical field [0001] The invention relates to the preparation of two kinds of Zn with different shapes on the stainless steel wire 2 SnO 4 The method of nanostructure and as photoelectrode of flexible dye-sensitized cell (DSSC) belong to the field of new material technology. 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. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042C01G19/00
Inventor 周勇李政道邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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