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Preparation method and application of attapulgite composite material with plasmon resonance effect

The technology of plasmon resonance and attapulgite is applied in the field of preparation of composite photocatalytic materials, which can solve the problems of high price and cannot be put into large-scale application, and achieve the effects of improving utilization rate, good reusability and reducing compound rate.

Active Publication Date: 2019-07-12
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the materials with plasmonic effect are mainly noble metals (such as Ag, Au, etc.), but they are expensive and cannot be put into practical large-scale applications.

Method used

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  • Preparation method and application of attapulgite composite material with plasmon resonance effect
  • Preparation method and application of attapulgite composite material with plasmon resonance effect
  • Preparation method and application of attapulgite composite material with plasmon resonance effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) First weigh 0.80g tungsten hexachloride (WCl 6 ), 1.20g of modified ATP was dissolved in 40ml of absolute ethanol solution, ultrasonically dissolved and then transferred to a 100ml microwave reactor for microwave solvothermal reaction, the set temperature was 180°C, and the time was 90min;

[0026] (2) Centrifuge the sample prepared in step (1), wash it three times with water and absolute ethanol, then dry the sample at 60°C for 24 hours, and grind it to obtain a tungsten oxide-modified attapulgite composite material 40%W 18 o 49 / ATP.

Embodiment 2

[0040] (1) First weigh 0.80g WCl 6 , 0.80g ATP was dissolved in 40ml of absolute ethanol solution, ultrasonically dissolved, transferred to a 100ml microwave hydrothermal kettle for microwave hydrothermal heating, set the temperature at 180°C, and the time was 90min;

[0041] (2) Centrifuge the sample prepared in step (1), wash it with water and absolute ethanol three times, then dry the sample and grind it to obtain a tungsten oxide-modified attapulgite composite material 50%W 18 o 49 / ATP, the follow-up detection is as in Example 1. Generate ammonia gas of about 123μmol / L.

Embodiment 3

[0043] (1) First weigh 0.80g WCl 6 , 1.87g ATP was dissolved in 40ml of absolute ethanol solution, ultrasonically dissolved and then transferred to a 100ml microwave hydrothermal kettle for microwave hydrothermal heating, the set temperature was 180°C, and the time was 90min;

[0044] (2) The sample prepared in step (1) was centrifuged with a centrifuge, washed with water and absolute ethanol three times, then the sample was dried and ground to obtain a tungsten oxide-modified attapulgite composite material 30%W 18 o 49 / ATP, the follow-up detection is as in Example 1. The ammonia gas generated is about 118μmol / L.

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Abstract

The invention belongs to the technical field of mineral composite materials, and relates to a preparation method and an application of an attapulgite composite material with a plasmon resonance effect. The preparation method comprises the following steps: (1) taking and acidifying purified attapulgite clay to obtain modified attapulgite; (2) adding tungsten hexachloride and the modified attapulgite to the anhydrous ethanol, and performing ultrasonic mixing; and (3) placing and reacting the obtained mixed solution in a microwave hydrothermal chemical reactor, centrifuging the obtained solution,and washing and drying the obtained reaction product to obtain the tungsten oxide (W18O49) / attapulgite composite photocatalytic material. The plasma type tungsten oxide / modified attapulgite nanocomposite material is synthesized by a microwave solvothermal process, and the prepared catalyst can maximally convert N2 into NH3 under the irradiation of visible light, and has an excellent photocatalytic ability.

Description

technical field [0001] The invention belongs to the technical field of mineral composite materials, and in particular relates to a preparation method and application of a composite photocatalytic material of attapulgite composite plasma-type tungsten oxide. Background technique [0002] As an important inorganic chemical product, ammonia plays a pivotal role in national economic production. However, in industrial production, ammonia is synthesized by the Haber-Bosh process under extreme conditions (673-873K, 20-40MPa). The industrial ammonia synthesis process consumes a lot of fossil fuels, which inevitably results in a large amount of CO 2 emission. Therefore, the reduction of nitrogen to ammonia (NH 3 ) is an urgent problem to be solved. [0003] In recent years, the use of solar photocatalysis technology to convert solar energy into chemical energy and realize the synthesis of ammonia by photonitrogen fixation has attracted much attention. The key to the catalytic pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J35/10C01C1/04
CPCB01J23/30C01C1/04B01J35/39B01J35/60Y02P20/52
Inventor 李霞章刘雅慧苏欢陈晓凡左士祥姚超刘文杰
Owner CHANGZHOU UNIV
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