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Preparation method of particle self-assembled TiO2/Fe2O3 chain-like compound powder

A composite powder, self-assembly technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc. control effect

Active Publication Date: 2017-08-01
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these reports are the synthesis of magnetically supported titanium dioxide nano- and micro-particles, the synthesis of particle self-assembled TiO 2 / Fe 2 o 3 There are few reports on chain composite powders

Method used

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  • Preparation method of particle self-assembled TiO2/Fe2O3 chain-like compound powder
  • Preparation method of particle self-assembled TiO2/Fe2O3 chain-like compound powder
  • Preparation method of particle self-assembled TiO2/Fe2O3 chain-like compound powder

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: Particle self-assembly Fe with a particle diameter of 50nm 2 o 3 Chain powder.

[0020] (1) First, wash the instrument to be used with ethanol and water, then use a 50mL small beaker to weigh 4mmoL ferrocene and 10mmoL glycine with an electronic balance, weigh 10mL ethanol with a graduated cylinder, and add 5mL water into the small beaker , to form solution A; after stirring for about 1 h on a magnetic stirrer, solution B was formed.

[0021] (2) Transfer the stirred mixture into a 25mL reaction kettle that has been washed in advance; cover the reaction kettle and put it in a constant temperature blast drying oven, set the temperature at 180°C, and react for 36 hours; after the reaction is completed, take out the reaction kettle , the powder generated after the reaction was centrifuged with a centrifuge, washed alternately with absolute ethanol and deionized water several times, and then dried at 60 ° C for 6 h to obtain a yellow Fe 2 o 3 powder.

[0...

Embodiment 2

[0023] Embodiment 2: Particle self-assembly Fe with a particle diameter of 200nm 2 o 3 Chain powder.

[0024] (1) First, wash the instrument to be used with ethanol and water, then use a 50mL small beaker to weigh 4mmoL ferrocene and 10mmoL glycine with an electronic balance, weigh 12mL ethanol with a graduated cylinder, and add 3mL water into the small beaker , to form solution A; after stirring for about 1 h on a magnetic stirrer, solution B was formed.

[0025] (2) Transfer the stirred mixture into a 25mL reaction kettle that has been washed in advance; cover the reaction kettle and put it in a constant temperature blast drying oven, set the temperature at 180°C, and react for 36 hours; after the reaction is completed, take out the reaction kettle , the powder generated after the reaction was centrifuged with a centrifuge, washed alternately with absolute ethanol and deionized water several times, and then dried at 60 ° C for 6 h to obtain a yellow Fe 2 o 3 powder.

[...

Embodiment 3

[0027] Embodiment 3: particle diameter is the particle self-assembly Fe of 50nm 2 o 3 / TiO 2 Composite chain powder

[0028] (1) First, wash the instrument to be used with ethanol and water, weigh 0.224g of tetrabutyl titanate (be careful not to encounter water) with an electronic balance, put it into a 50mL small beaker, and then weigh it with a measuring cylinder. Pour 10mL of ethanol into a small beaker and put it into an ultrasonic cleaner for 5 minutes to form solution A; then weigh 4mmol of ferrocene, 10mmol of glycine, and 5mL of water to form solution B; finally put solution B on a magnetic The stirrer was stirred for about 1 h to form solution C.

[0029] (2) Transfer the ultrasonic mixture into a pre-washed 25mL reaction kettle, cover the reaction kettle and put it in a constant temperature blast drying oven, set the temperature at 180°C, and react for 36 hours; after the reaction is completed, take out the reaction kettle , The powder generated after the reactio...

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Abstract

The invention provides a preparation method of particle self-assembled TiO2 / Fe2O3 chain-like compound powder and relates to the technical field of preparation of magnetically loaded titanium dioxide. According to the preparation method, a titanium source, soluble iron salt and glycine are used as reaction raw materials and are subjected to hydrothermal reaction to prepare the particle self-assembled TiO2 / Fe2O3 chain-like compound powder. The preparation method comprises the following steps: dissolving the titanium source into ethanol and adding the soluble iron salt, the glycine and water; after uniformly mixing, conveying a mixture into a reaction kettle and carrying out hydrothermal synthesis reaction; after reacting, carrying out post-treatment to obtain the product. A titanium dioxide loaded magnetic compound chain-like material is successfully obtained through a glycine biomolecule assisted hydrothermal method. A series of experiment results show that the glycine is used as a template and the raw materials, so that the magnetic titanium dioxide nano chain-like compound powder can be successfully prepared; the magnetic titanium dioxide nano chain-like compound powder has the characteristics of relatively narrow particle size distribution, uniform shape distribution, controllability and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of magnetically supported titanium dioxide, in particular to a particle self-assembled TiO 2 / Fe 2 o 3 The preparation method of the chain composite powder. Background technique [0002] In the field of photocatalysis, TiO 2 High photocatalytic activity, stable chemical properties (acid and alkali resistance and chemical corrosion), no absorption in the visible light region, can be made into white block or transparent film, the source of raw materials is abundant, cheap, and does not produce secondary pollution. However, due to the nano-TiO 2 The particles are fine, not easy to precipitate and difficult to recover, and the loss of active components is large, which is not conducive to the regeneration and reuse of the catalyst. Therefore, in order to apply this technology to large-scale water treatment, the problem of photocatalyst recovery must be solved. In this paper, by preparing a mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745
CPCB01J23/002B01J23/745B01J35/39
Inventor 谢劲松聂明星管航敏李顾韩成良
Owner HEFEI UNIV
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