Preparation method and product of self-supporting VO2 Fenton-like catalytic material

A catalytic material, VO2 technology, applied in the field of preparation of self-supporting VO2-like Fenton catalytic materials, to achieve the effect of good effect, simple preparation process and uniform grain size

Active Publication Date: 2018-03-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vanadium is rich in reserves, cheap and easy to get, and has unique advantages in practical applications. Its oxide vanadium dioxide (VO 2 ) are widely used in the manufacture of optical devices and electronic devices, but there are few reports on their use as Fenton-type catalysts to degrade organic matter

Method used

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  • Preparation method and product of self-supporting VO2 Fenton-like catalytic material
  • Preparation method and product of self-supporting VO2 Fenton-like catalytic material
  • Preparation method and product of self-supporting VO2 Fenton-like catalytic material

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Such as figure 1 shown, first, the V 2 o 5 The powder is heated to a molten state, and V is prepared by water quenching 2 o 5 Sol, the concentration is 10g / L, aged for 3 days; the circular steel mesh is used as the cathode, and the platinum sheet is used as the anode, installed in the electrophoretic deposition equipment, immersed in the sol, the DC power supply voltage is set to 0.001V, and the distance between the electrodes is 10mm. Time 10min, get V 2 o 5 Coated steel mesh substrate; put the prepared sample in a tube furnace, set the heating rate at 3°C / min, calcining at 700°C, holding time for 1h, and calcining under the atmosphere of 1L / min flow rate to obtain VO 2 Fenton-like catalytic materials. The SEM photo of the catalytic material prepared in this embodiment is as follows image 3 shown.

Embodiment 2

[0045] Such as figure 1 shown, first, the V 2 o 5 The powder is heated to a molten state, and V is prepared by water quenching 2 o 5 Sol, the concentration is 10g / L, aged for 3 days; the circular steel mesh is used as the cathode, and the platinum sheet is used as the anode, installed in the electrophoretic deposition equipment, immersed in the sol, the DC power supply voltage is set to 0.001V, and the distance between the electrodes is 10mm. Time 10min, get V 2 o 5 Covered steel mesh substrate. Put the prepared sample in a tube furnace, set the heating rate at 3°C / min, calcining at 700°C, holding time for 2h, and calcining under the atmosphere of 1L / min flow rate to obtain VO 2 Fenton-like catalytic materials. The SEM photo of the catalytic material prepared in this embodiment is as follows Figure 4 shown.

Embodiment 3

[0047] Such as figure 1 shown, first, the V 2 o 5 The powder is heated to a molten state, and V is prepared by water quenching 2 o 5 Sol, the concentration is 10g / L, aged for 3 days; the circular steel mesh is used as the cathode, and the platinum sheet is used as the anode, installed in the electrophoretic deposition equipment, immersed in the sol, the DC power supply voltage is set to 0.001V, and the distance between the electrodes is 10mm. Time 10min, get V 2 o 5 Coated steel mesh substrate; put the prepared sample in a tube furnace, set the heating rate to 3°C / min, calcining temperature to 700°C, holding time to 3h, and flow rate to 1L / min. get VO 2 Fenton-like catalytic materials. The SEM photo of the catalytic material prepared in this embodiment is as follows Figure 5 shown.

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Abstract

The invention belongs to the field of catalyst preparation, and specifically discloses a preparation method and a product of a self-supporting VO2 Fenton-like catalytic material. The preparation method comprises the following steps: (1) preparing V2O5 sol and aging; (2) immersing anode and cathode conductive base materials into the V2O5 sol for carrying out electrophoretic deposition to obtain a V2O5-coated conductive base material; (3) putting the V2O5-coated conductive base material prepared in the step (2) in a tubular furnace, and carrying out calcinations under a ventilation condition, wherein the heating rate of calcinations is 1 to 20 DEG C per minute, the temperature of calcinations is 600 to 1000 DEG C, the holding time is 0.5 to 10 h, and the air introduction speed is 0.1 to 10 Lper minute, therefore, the self-supporting VO2 Fenton-like catalytic material is obtained. The self-supporting VO2 Fenton-like catalytic material prepared in the invention has excellent self-supporting characteristic and catalytic performance, and is free of secondary pollution to the environment, so that low-cost and large-scale production can be realized.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, more specifically, relates to a self-supporting VO 2 Preparation method and product of Fenton-like catalytic material. Background technique [0002] In recent years, the global water pollution crisis has been intensifying. Organic dyes such as textiles and dyes and phenolic compounds are the main components of wastewater. Advanced oxidation processes (AOPs) are an effective method for decomposing and synthesizing organic pollutants. Fenton-like catalysts Materials are effective advanced oxidation catalysts, and new Fenton-like catalytic materials have attracted everyone's attention. [0003] Vanadium is rich in reserves, cheap and easy to get, and has unique advantages in practical applications. Its oxide vanadium dioxide (VO 2 ) are widely used in the fabrication of optical and electronic devices, but there are few reports on their use as Fenton-type catalysts for the degradation of organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22B01J23/847B01J37/08B01J37/34C02F1/72C02F101/34C02F101/30
CPCB01J23/22B01J23/8472B01J35/008B01J37/082B01J37/348C02F1/725C02F2101/30C02F2101/34C02F2101/345C02F2305/026
Inventor 李和平李静严有为张丹丹
Owner HUAZHONG UNIV OF SCI & TECH
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