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Preparation method of V2O5/Sr2FeTaO6 @ C photocatalyst and photocatalyst and application thereof

A photocatalyst, chloride technology, applied in metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, physical/chemical process catalysts, etc. Bonding, efficiency needs to be improved and other issues, to achieve the effect of reducing transfer resistance, promoting rapid transfer, and reducing interface transfer resistance

Active Publication Date: 2020-12-25
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixing two kinds of semiconductor machinery makes it difficult to achieve real bonding at the interface, resulting in its efficiency still to be improved
2) Using the method of magnetron sputtering, the volume of the material prepared by this method is difficult to increase, and the cost is very high

Method used

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  • Preparation method of V2O5/Sr2FeTaO6 @ C photocatalyst and photocatalyst and application thereof
  • Preparation method of V2O5/Sr2FeTaO6 @ C photocatalyst and photocatalyst and application thereof
  • Preparation method of V2O5/Sr2FeTaO6 @ C photocatalyst and photocatalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] V 2 o 5 / Sr 2 FeTaO 6 Preparation of @C Photocatalyst and Evaluation of Nitrogen Oxide Degradation

[0046] (1) Add 15mL of deionized water to 45mL of absolute ethanol, and configure an aqueous ethanol solution with a volume ratio of 1:3;

[0047] (2) Add 200 mg of vanadium acetylacetonate to the above solution, then add 144 mg of 1,3,5-benzenetricarboxylic acid and 66 mg of NaCl, and stir for about 12 hours to completely dissolve it;

[0048] (3) Add 30% dilute HCl by volume fraction to the solution obtained in step (2), and adjust the pH value of the solution to 2.5;

[0049] (4) Add the prepared 1g Sr 2 FeTaO 6 Powder particles, fully stirred;

[0050] (5) Transfer the mixed suspension obtained in step (4) to a hydrothermal kettle for hydrothermal reaction, and react at 180°C for 15 hours. After the reaction is completed, wait for it to cool naturally, rinse the solid repeatedly with absolute ethanol and water, and dry to obtain MIL -101(V) / Sr 2 FeTaO 6 Pow...

Embodiment 2

[0075] Identical to the preparation method of Example 1, the difference is that the addition of vanadium acetylacetonate is changed, specifically as follows:

[0076] serial number sample Sr 2 FeTaO 6 amount

Embodiment 3

[0078] (1) Add 15mL of deionized water to 45mL of absolute ethanol, and configure an aqueous ethanol solution with a volume ratio of 1:3;

[0079] (2) Add 200 mg of vanadium acetylacetonate to the above solution, then add 60 mg of 1,3,5-benzenetricarboxylic acid and 66 mg of NaCl, and stir for about 12 hours to completely dissolve it;

[0080] (3) Add 30% dilute HCl to the solution obtained in step (2), and adjust the pH value of the solution to 2.5;

[0081] (4) Add the prepared 1g Sr 2 FeTaO 6 Powder particles, fully stirred;

[0082] (5) Transfer the mixed suspension obtained in step (4) to a hydrothermal kettle for hydrothermal reaction, and react at 180°C for 15 hours. After the reaction is completed, wait for it to cool naturally, rinse repeatedly with absolute ethanol and water, and dry to obtain MIL- 101(V) / Sr 2 FeTaO 6 Powder;

[0083] (6) MIL-101(V) / Sr obtained in step (5) 2 FeTaO 6 After the powder sample is fully ground, it is transferred to a tube furnace,...

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Abstract

The invention discloses a preparation method of a V2O5 / Sr2FeTaO6 @ C photocatalyst and the photocatalyst and application thereof. The preparation method comprises the following steps: dissolving vanadate, an organic framework and chloride into an ethanol aqueous solution, and performing stirring for dissolving; adjusting the pH value of the solution, adding the prepared Sr2FeTaO6, and fully performing stirring; carrying out hydrothermal reaction on the obtained mixed suspension, naturally cooling the mixed suspension after the reaction is finished, repeatedly washing the solid with absolute ethyl alcohol and water, and performing drying to obtain MIL-101 (V) / Sr2FeTaO6 powder; and fully grinding the obtained MIL-101 (V) / Sr2FeTaO6 powder sample, and calcining the ground MIL-101 (V) / Sr2FeTaO6powder sample to obtain sample powder. The brand-new preparation method of the composite photocatalyst is provided based on the post-treatment process of the MOF material, the ternary photocatalyst with strong interfacial force is finally synthesized, and the performance of photocatalytic degradation of nitrogen oxide is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to a V 2 o 5 / Sr 2 FeTaO 6 Preparation method of @C photocatalyst and its photocatalyst and application. Background technique [0002] The in-depth treatment of high-concentration nitrogen oxide exhaust gas is one of the important measures to improve people's physical and mental health and life happiness. The mainstream treatment methods currently used are selective catalytic reduction technology (SCR) and selective non-catalytic reduction (SNCR) technology. The former requires a large investment in equipment and must use NH3, which is easy to cause secondary pollution; although the latter does not require a catalyst and has a low cost, it needs to be carried out at high temperature and consumes high energy consumption. In recent years, photothermal catalysis has been gradually proven to be a new technology and method for controlling atmospheric pollutants with strong ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847B01D53/86B01D53/56
CPCB01J23/8476B01D53/8628B01J2523/00B01J35/39B01J2523/24B01J2523/55B01J2523/57B01J2523/842
Inventor 崔恩田李清萍邓育新侯贵华
Owner YANCHENG INST OF TECH
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