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SrTiO3 material and preparation method thereof

A solution and aqueous solution technology, applied in the field of photocatalytic materials, can solve the problems of large particle size, poor photocatalytic performance, low purity, etc., and achieve the effects of high specific surface area, high photocatalytic activity, and high carrier mobility.

Active Publication Date: 2020-12-18
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The SrTiO3 material prepared by the coprecipitation method in the prior art has the problems of low purity, large particle size, and poor photocatalytic performance

Method used

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  • SrTiO3 material and preparation method thereof
  • SrTiO3 material and preparation method thereof
  • SrTiO3 material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0041] S1. (1) Preparation of 0.04 mol / L butyl titanate ethanol solution: Measure 20 mL of absolute ethanol solution and pour it into a clean beaker. Stir the beaker on a magnetic stirrer, accurately and quickly measure 0.272 mL (272 μL) of butyl titanate with a pipette gun, and slowly drop it into the absolute ethanol solution. Then continue to stir for ten minutes, make it stir until there is no white precipitate.

[0042] (2) Prepare 0.04mol / L strontium chloride aqueous solution: accurately weigh 0.2133g of SrCl with an electronic analytical balance 2 ·6H 2 O solid, measure 20mL of deionized water and pour it into a beaker. Stir for ten minutes on a magnetic stirrer until evenly mixed.

[0043] (3) Preparation of 10 mg / L malachite green solution: weigh 5 mg of malachite green with an analytical balance, and pour it into a 100 mL beaker. Add water into the beaker, stir well with a glass rod, then pour the stirred solution into a 500mL volumetric flask. After washing the b...

Embodiment 2

[0047] The difference between this example and Example 1 is that in step S2, after "under the action of a magnetic stirrer, make it stir evenly", add "then slowly add 1.6g of triethylamine dropwise and stir evenly" , and the rest of the conditions are consistent with Example 1 to obtain the SrTiO regulated by triethylamine 3 .

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Abstract

The invention relates to the field of photocatalytic materials, and especially relates to a SrTiO3 material and a preparation method thereof. According to the preparation method, strontium chloride hexahydrate is used as a strontium source, butyl titanate is used as a titanium source, a strontium chloride aqueous solution and a butyl titanate ethanol solution are mixed for reaction, and the generated white precipitate is dried and calcined to prepare the SrTiO3 material. Organic small molecular triethylamine is added into a reaction system to serve as a soft template to regulate and control the morphology and structure of SrTiO3, and the SrTiO3 material with higher purity and more uniform particle size distribution is prepared. The photocatalytic performance of the SrTiO3 material is investigated by taking malachite green as a target degradation product under the irradiation of a xenon-mercury lamp, and the photocatalytic effect of the SrTiO3 material prepared by adding triethylamine is proved to be better.

Description

technical field [0001] The invention relates to the field of photocatalytic materials, especially a kind of SrTiO 3 Materials and their preparation methods. Background technique [0002] SrTiO 3 It is an inorganic compound with a perovskite structure and has a variety of excellent properties. For example, high dielectric constant, low loss and high thermal stability, especially good photocatalytic performance, are a class of photocatalytic materials with great development potential. Therefore, in recent years, SrTiO 3 research has aroused great interest. Preparation of SrTiO under environment-friendly, pollution-free and low-cost conditions 3 Catalysts and their modification are more important to improve photocatalytic activity. In recent years, perovskite compounds have become a research hotspot at home and abroad in the field of photocatalysis due to their unique structures. SrTiO 3 It is a typical perovskite-type composite oxide, which has the characteristics of hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B01J23/02B01J35/10
CPCC01G23/006B01J23/02B01J23/002B01J35/61B01J35/39
Inventor 陈龙许俊敏李瑞锋陈思凡王骞玮左锐亓昭鹏
Owner HUANGSHAN UNIV