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Nanometer titanium dioxide-coated iron oxide yellow composite material and preparation method thereof

A technology of nano-titanium dioxide and composite materials, which is applied in the field of nano-titanium dioxide-coated iron yellow composite materials and its preparation, can solve the problems that have not been seen, and achieve the effects of uniform coating, good process control and cost reduction

Active Publication Date: 2012-12-12
浙江海宁经编产业园区开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are many literature reports on the preparation of nanocomposites at home and abroad, the use of nano-titanium dioxide (TiO 2 ) coating on the surface of iron yellow (α-FeOOH) is relatively rare.

Method used

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  • Nanometer titanium dioxide-coated iron oxide yellow composite material and preparation method thereof
  • Nanometer titanium dioxide-coated iron oxide yellow composite material and preparation method thereof
  • Nanometer titanium dioxide-coated iron oxide yellow composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Fix a three-neck bottle with a capacity of 500mL in an ice-water bath, take distilled water (H 2 (2) 200mL is packed in the there-necked bottle; A condenser is installed on the middle port of the there-necked bottle, utilizes tap water to condense; A thermometer is installed on a mouth of the there-necked bottle, to monitor and control the temperature of the reaction system; Take TiCl 4 Put 100mL into a dry constant-pressure separating funnel, and install the constant-pressure separating funnel on the other side port of the three-necked flask; under the condition of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, The titanium chloride solution was slowly dropped into distilled water, and the temperature of the entire dropping and mixing process was controlled at about 0°C by controlling the dropping speed and the temperature of the ice-water bath; with the addition of titanium tetrachloride, the color of th...

Embodiment 2

[0045] (1) adopt the device and equipment described in step (1) in embodiment 1, get distilled water (H 2 (2) 200mL is packed into there-necked bottle; Get TiCl 4 Put 100mL into a dry constant-pressure separating funnel; under the conditions of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, slowly drop the titanium tetrachloride solution into pure water, and control the dropping speed and The temperature of the ice-water bath keeps the temperature of the entire dropping and mixing process at about 0°C; after the addition of titanium tetrachloride is completed, continue to stir for 2 hours. At this time, the mixed system is a light yellow-green sol. Cool it to room temperature and place it ;

[0046] (2) Adopt the device and equipment described in step (2) in Example 1, place the titanium tetrachloride hydrosol at room temperature for 6 hours to obtain the aged sol; get 60 mL of the aged sol and pack it into a 500 m...

Embodiment 3

[0050] (1) adopt the device and equipment described in step (1) in embodiment 1, get distilled water (H 2 (2) 200mL is packed into there-necked bottle; Get TiCl 4 Put 100mL into a dry constant-pressure separating funnel; under the conditions of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, slowly drop the titanium tetrachloride solution into pure water, and control the dropping speed and The temperature of the ice-water bath keeps the temperature of the entire dropping and mixing process at about 0°C; after the addition of titanium tetrachloride is completed, continue to stir for 2 hours. At this time, the mixed system is a light yellow-green sol. Cool it to room temperature and place it ;

[0051] (2) Adopt the device and equipment described in step (2) in Example 1, after placing the titanium tetrachloride hydrosol at room temperature for 24 hours, obtain the aged sol; get 60mL of the aged sol and pack it into a...

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Abstract

The invention discloses a nanometer titanium dioxide-coated iron oxide yellow composite material and a preparation method thereof. The nanometer titanium dioxide-coated iron oxide yellow composite material is prepared by coating nanometer titanium dioxide on the surface of iron oxide yellow serving as a carrier, wherein the nanometer titanium dioxide belongs to an anatase phase; the composite material is in a long stick shape, the longitudinal length is between 0.5 and 1.5 mu m, and the transversal particle size is between 140 and 160 nm; and the molar ratio of Fe to Ti in the composite material is 0.5 to 1.5:1. The nanometer titanium dioxide-coated iron oxide yellow composite material prepared by the method has the advantages of uniform coating of nanometer powder, high dispersibility, high performance and wide application field. The preparation method has the advantages of high yield, low cost, easily controllable process procedure and suitability for industrialized production.

Description

(1) Technical field [0001] The present invention relates to a kind of nano titanium dioxide (TiO 2 ) coated iron yellow (α-FeOOH) composite material and its preparation method. (2) Background technology [0002] Iron oxide yellow (α-FeOOH) can be widely used in new magnetic recording materials, wastewater treatment, environmental pollutants treatment and so on because of its good magnetic properties. Nano-titanium dioxide has attracted much attention because of its advantages of non-toxicity, stability, and no secondary pollution, especially in the treatment of environmental pollution. On the one hand, due to the nano-TiO 2 It is easy to disperse into solvents such as water, and it is difficult to separate from solvents such as water, making it difficult to achieve recovery and recycling. Therefore, TiO 2 application cost; on the other hand, due to nano-TiO 2 The surface is large, the activity is high and it is easy to agglomerate, which makes it difficult to reflect the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J21/06C09C1/24C09C3/06
Inventor 李国华胡素娟
Owner 浙江海宁经编产业园区开发有限公司
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