Preparation method of graded zinc stannate macroporous materials

A macroporous material, zinc stannate technology, applied in nanotechnology, chemical instruments and methods, tin compounds, etc. for materials and surface science, to achieve high photoelectric conversion efficiency, fast reproducibility, and abundant raw materials

Inactive Publication Date: 2013-08-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hierarchical nanostructured materials have attracted great attention due to their advantages such as faster electron transport and better light scattering ability, and ar

Method used

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  • Preparation method of graded zinc stannate macroporous materials
  • Preparation method of graded zinc stannate macroporous materials
  • Preparation method of graded zinc stannate macroporous materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1 Synthesis of graded zinc stannate macroporous material

[0053] Synthesis of PS emulsion: measure 670 mL H 2O was added to a 1000 mL three-necked flask, heated to 95°C and kept at a constant temperature, and then N 2 After 10 mins, add weighed 42g of styrene, continue to stir for 15 min, add 50 mL of 0.29 M potassium persulfate, and react for 24 h under stable conditions to obtain a 200 nm PS emulsion.

[0054] S1. Weigh 1.4024g SnCl respectively 4 ·5H 2 O, 1.756g Zn(CH 3 COO) 2 2H 2 O was added to a 100 mL beaker, and 16 mL of the prepared 200 nm PS emulsion (0.087 g / mL), 16 mL of 1,2-propanediol, and 32 mL of H 2 O and 16 mL of diethanolamine were added to the beaker in turn to make the pH value alkaline, and the stirring was continued for 30 min to make it a uniform solution; then all the solution was transferred to a 100 mL polytetrafluoroethylene reactor, and the reaction Seal the stainless steel jacket of the kettle tightly, put it in an oven, ...

Embodiment 2

[0060] Slurry preparation:

[0061] Get 1g of the graded zinc stannate macroporous material synthesized by Example 1 or the zinc stannate nanoparticles synthesized by Comparative Example 1, and add to 0.2 mL glacial acetic acid, 3 g terpineol, 0.5 g ethylcellulose, 9 mL In the solution mixed with absolute ethanol, after stirring for 24 hours, ultrasonically treat the stirred slurry for 20 minutes, then further disperse it, grade zinc stannate macroporous material slurry or zinc stannate nanoparticle slurry, and seal it for later use .

[0062] Print the graded zinc stannate macroporous material slurry on the FTO conductive glass by screen printing, brush the graded zinc stannate macroporous material slurry, and heat-treat it in a program-controlled muffle furnace at 500°C for 1 hour , cooled to room temperature, soaked in 40 mM TiCl at 70 °C 4 in aqueous solution for 30 min, from TiCl 4 Zn is removed from the solution 2 SnO 4 Wash the working electrode three times with di...

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Abstract

The invention relates to a preparation method of zinc stannate nano-materials, and discloses a preparation method of graded zinc stannate macroporous materials. The preparation method of the graded zinc stannate macroporous materials comprises: S1, mixing tin salts, zinc salts, and template molecules with a mixed solvent of an organic solvent and water to form a uniform mixed liquor, adjusting a pH value to be alkaline, performing a in-situ hydrothermal reaction, and then separating, washing and drying products after the reaction ends; S2, performing heating calcination or acid treatment for the products obtained in the S1 to remove the template molecules, thereby obtaining the graded zinc stannate macroporous materials composed of zinc stannate nano-particles, wherein the template molecules are polystyrene microspheres (PS), polymethyl methacrylate microspheres, carbon microspheres or silica microspheres. The preparation method provided by the invention is simple, convenient, rapid and good in reappearance; the synthesized graded zinc stannate macroporous materials can be widely applied in fields of catalysis, lithium ion batteries, solar cells and the like.

Description

technical field [0001] The invention relates to the field of preparation of zinc stannate nanometer materials, more specifically, to a preparation method of graded zinc stannate macroporous materials. Background technique [0002] Macroporous materials are an important class of nanostructured materials, which have many important applications in the fields of photocatalysis, adsorption, separation, drug release, gas sensors, lithium-ion batteries, and solar cells. The strategies for synthesizing hollow materials include hard template methods (carbon templates, silicon templates, organic polymer templates, and metal particle templates, etc.), soft template methods (bubbles, oil droplets, macromolecules, micelles, microemulsions), and template-free methods ( oswald ripening, Kirkendall diffusion). [0003] The controllable preparation of hierarchical macroporous structure materials composed of nanoparticles is currently a research hotspot in the field of nanomaterials. The b...

Claims

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Application Information

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IPC IPC(8): C01G19/00B82Y30/00
Inventor 匡代彬王玉芬李柯楠徐杨帆饶华商苏成勇
Owner SUN YAT SEN UNIV
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