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A highly photocatalytically active cati 2 o 5 Preparation method of nanoparticles and the products obtained therefrom

A nanoparticle, catalytic activity technology, applied in the field of photocatalysis, can solve problems such as blank, difficult synthesis, complex process, etc., and achieve the effect of simple process route, promotion of application and development, and excellent photocatalytic performance

Active Publication Date: 2017-04-05
浙江中防环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing technology can prepare CaTiO by hydrothermal method and solid phase method 3 Phase photocatalyst material, while CaTi 2 o 5 is preparing CaTiO 3 It appears as an intermediate phase in the process, so the current research on its preparation, structure and properties is almost blank
[0004] In addition, the preparation of existing photocatalyst materials generally has problems such as complex process and difficult synthesis. Therefore, it is of great significance to seek and develop new pure material materials with high efficiency, simple preparation process and good photocatalytic performance.

Method used

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  • A highly photocatalytically active cati <sub>2</sub> o <sub>5</sub> Preparation method of nanoparticles and the products obtained therefrom
  • A highly photocatalytically active cati <sub>2</sub> o <sub>5</sub> Preparation method of nanoparticles and the products obtained therefrom
  • A highly photocatalytically active cati <sub>2</sub> o <sub>5</sub> Preparation method of nanoparticles and the products obtained therefrom

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Experimental program
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Effect test

Embodiment 1

[0021] In this embodiment, high photocatalytic activity CaTi 2 o 5 The preparation method of nanoparticle, its step is as follows:

[0022] (1) Dissolve butyl titanate in ethanol, according to the molar ratio of butyl titanate: ethanol = 1:5, stir until uniform to obtain A solution;

[0023] (2) Calcium chloride pentahydrate is dissolved in distilled water, then add ethanol, according to molar ratio calcium chloride pentahydrate: distilled water: ethanol=1: 400: 10, stir to obtain B solution evenly;

[0024] (3) Add solution A dropwise into solution B under stirring and stir and mix for 10 minutes, then gradually add hydrochloric acid solution dropwise to pH 4.5, and continue stirring for 15 minutes; Insulate at ℃ for 36h, wash with distilled water 6 times, and obtain CaTi with a particle size of 50nm 2 o 5 nanoparticles.

Embodiment 2

[0026] In this embodiment, high photocatalytic activity CaTi 2 o 5 The preparation method of nanoparticle, its step is as follows:

[0027] (1) Dissolving isopropyl titanate in propanol, according to the molar ratio of isopropyl titanate:propanol=1:5, stirred until uniform to obtain A solution;

[0028] (2) Calcium chloride pentahydrate is dissolved in distilled water, then propanol is added, according to molar ratio calcium chloride pentahydrate: distilled water: propanol=1: 400: 1, stir until evenly obtain B solution;

[0029] (3) Add solution A dropwise to solution B under stirring and stir and mix for 5 minutes, then gradually add hydrochloric acid solution dropwise until the pH value is 4.5, and continue stirring for 15 minutes; Insulate at ℃ for 24h, wash with distilled water 3 times to obtain CaTi with a particle size of 65nm 2 o 5 nanoparticles.

Embodiment 3

[0031] In this embodiment, high photocatalytic activity CaTi 2 o 5 The preparation method of nanoparticle, its step is as follows:

[0032] (1) Dissolving titanium chloride in butanol, according to the molar ratio of isopropyl titanate:butanol=1:1, stirred until uniform to obtain A solution;

[0033] (2) Calcium chloride pentahydrate is dissolved in distilled water, then add butanol, according to molar ratio calcium chloride pentahydrate: distilled water: butanol=1: 400: 5, stir to obtain B solution evenly;

[0034] (3) Add solution A dropwise to solution B under stirring and stir and mix for 8 minutes, then gradually add sulfuric acid solution dropwise to a pH value of 4.9, and continue stirring for 15 minutes; Incubate at ℃ for 18h, wash 6 times with distilled water, and obtain CaTi with a particle size of 60nm 2 o 5 nanoparticles.

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Abstract

The invention discloses a preparation method of a CaTi2O5 nano particle with high photocatalytic activity. With titanium compound and calcium chloride anhydrous as the raw materials, the novel CaTi2O5 nano particle with excellent photocatalytic performance is prepared through hydrolysis; the technique breakthrough in the photocatalytic field is realized; the process route is simple and the application and the development of photocatalytic technique are facilitated.

Description

technical field [0001] The invention relates to the field of photocatalytic technology, in particular to a CaTi with high photocatalytic activity 2 o 5 Process for preparing nanoparticles and products obtained therefrom. Background technique [0002] With the rapid development of economic production, people's living standards have been greatly improved, and promoted social progress and development; but at the same time, it has also paid a huge price for the deteriorating global environment. For example, in the textile printing and dyeing industry, a large amount of printing and dyeing wastewater will be discharged during the production process, which contains a large amount of pollutants such as fibers, chemical additives, and oil. These pollutants have high COD and TOC indexes, large fluctuations in pollution levels, and complex chemical components. , The direct discharge of wastewater not only seriously endangers human health, but also causes damage to the ecological env...

Claims

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Application Information

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IPC IPC(8): B01J23/02C01G23/00B82Y30/00B82Y40/00
Inventor 董伟霞包启富顾幸勇
Owner 浙江中防环保科技有限公司
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