a tio 2 -fe 2 o 3 Preparation method and application of composite powder

A technology of composite powder and fe2o3, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, hydrogen/synthesis gas production, etc., can solve the problems of rough, imperfect and fine morphology of composite materials, and inhibit the photoelectric performance of materials, etc. , to achieve good photocatalytic degradation of dyes and photolysis of water hydrogen production performance, low cost, simple operation

Active Publication Date: 2020-05-01
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] On the other hand, the TiO obtained in the previous literature 2 / Fe 2 o 3 Composite materials are usually rough in shape and structure, not perfect and fine, which also inhibits the photoelectric performance of the material to a certain extent.

Method used

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  • a tio <sub>2</sub> -fe <sub>2</sub> o <sub>3</sub> Preparation method and application of composite powder
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  • a tio <sub>2</sub> -fe <sub>2</sub> o <sub>3</sub> Preparation method and application of composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of TiO 2 / Fe 2 o 3 The preparation method of composite powder, the steps are as follows:

[0033] (1) Extraction of green plant leaf juice: select fresh green leaves and wash them repeatedly with water and ethanol. The green leaves are cut into fine pieces and ground into green leaf juice. Store the extracted green leaf juice in a sterilized centrifuge tube and store it at 4°C, and use it as an organic template and photoreaction carrier in subsequent experiments; in order to maintain the biological activity of the green leaf juice, the extracted green leaf juice must be taken immediately. use.

[0034] (2) TiO 2 / Fe 2 o 3 Preparation of the mixed solution: Weigh 1 g of ferric chloride powder, dissolve it in 20 ml of green leaf juice, stir for 2 h, so that ferric chloride and green leaf juice are fully mixed; according to the volume ratio of green leaf juice and tetrabutyl titanate 20:1 Measure tetrabutyl titanate (that is, the volume of green leaf juice i...

Embodiment 2

[0046] A kind of TiO 2 / Fe 2 o 3 The preparation method of composite powder, the steps are as follows:

[0047] (1) Extraction of green plant leaf juice: select fresh green leaves and wash them repeatedly with water and ethanol. The green leaves are cut into fine pieces and ground into green leaf juice. Store the extracted green leaf juice in a sterilized centrifuge tube and store it at 4°C, and use it as an organic template and photoreaction carrier in subsequent experiments; in order to maintain the biological activity of the green leaf juice, the extracted green leaf juice must be taken immediately. use.

[0048] (2) TiO 2 / Fe 2 o 3 Preparation of mixed solution: Weigh 1.4 g of ferric chloride powder, dissolve it in 20 ml of green leaf juice, stir for 1 hour, so that ferric chloride and green leaf juice are fully mixed; the volume ratio of green leaf juice to tetrabutyl titanate is 10 : 1 Measure tetrabutyl titanate (that is, the volume of green leaf juice is 10 tim...

Embodiment 3

[0054] A kind of TiO 2 / Fe 2 o 3 The preparation method of composite powder, the steps are as follows:

[0055] (1) Extraction of green plant leaf juice: select fresh green leaves and wash them repeatedly with water and ethanol. The green leaves are cut into fine pieces and ground into green leaf juice. Store the extracted green leaf juice in a sterilized centrifuge tube and store it at 4°C, and use it as an organic template and photoreaction carrier in subsequent experiments; in order to maintain the biological activity of the green leaf juice, the extracted green leaf juice must be taken immediately. use.

[0056] (2) TiO 2 / Fe 2 o 3 Preparation of the mixed solution: Weigh 3g of ferric chloride powder, dissolve it in 15 ml of green leaf juice, stir for 2 hours, so that ferric chloride and green leaf juice are fully mixed; according to the volume ratio of green leaf juice to tetrabutyl titanate 5: 1 Measure tetrabutyl titanate (that is, the volume of green leaf juice...

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Abstract

The invention discloses a preparation method of TiO2 / Fe2O3 composite powder. A microstructure and a crystal form of TiO2 / Fe2O3 are regulated by adopting green leaves of plants as biological templatesand photocatalytic reaction carriers, and a catalytic reaction is performed under illumination, so that a composite powder in a TiO2 nano-particle (quantum dot) / Fe2O3 laminated rod-like structure is obtained at low temperature. The invention also discloses the application of the TiO2 / Fe2O3 composite powder in a photocatalyst or a new energy material. The preparation method is low in temperature, low in cost and simple in operation; the prepared TiO2 / Fe2O3 composite powder has a novel nano-particle (quantum dot) / laminated rod-like microstructure and is large in specific surface area and good inphotocatalytic property (photocatalytic degradation and photohydrolysis hydrogen production).

Description

technical field [0001] The invention belongs to the technical field of photocatalysis and new energy, and relates to titanium dioxide (TiO 2 ) / iron oxide (Fe 2 o 3 ) field of photocatalysis and new energy technology, especially involving a kind of TiO 2 Nanoparticles (Quantum Dots) / Fe 2 o 3 Preparation method of laminated nanorod composite powder, and prepared TiO 2 / Fe 2 o 3 The use of composite powder. Background technique [0002] In recent years, researchers have begun to pay a lot of attention to light-responsive photocatalysts in order to more effectively utilize solar energy, an inexhaustible and clean energy source, in order to sustainably solve the current energy crisis. Among them, TiO 2 As a semiconductor photocatalyst, due to its low cost, non-toxicity, and high chemical and physical stability, it is widely used in many aspects such as solar water splitting hydrogen production, carbon dioxide conversion, solar energy conversion and storage, degradation o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J37/03B01J37/08C02F1/30C01B3/04C02F101/34C02F101/38
CPCB01J23/002B01J23/745B01J35/004B01J37/0009B01J37/033B01J37/08C01B3/042C01B2203/0277C01B2203/1047C02F1/30C02F2101/308C02F2101/34C02F2101/38C02F2305/10Y02E60/36
Inventor 曾辉周阳宁彭恩高莫俊林程臣
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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