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A kind of application magneti phase mesoporous titanium suboxide ti 4 o 7 Method for treating heavy metal waste liquid

A titanium oxide and heavy metal technology, applied in water/sludge/sewage treatment, sterilization/microdynamics water/sewage treatment, water/sewage treatment, etc., can solve small contact area, clogged filter device, separation of catalyst powder Recycling difficulties and other problems, to achieve the effect of simple operation

Active Publication Date: 2022-01-04
GUANGDONG ROI OPTOELECTRONICS TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the suspension-type titanium dioxide catalyst has the following disadvantages: (1) It is difficult to separate and recycle the catalyst powder, which is likely to cause secondary pollution of the water body; (2) The titanium dioxide powder cannot be reused; (3) The stability is poor, and it is easy to block the filter device
The disadvantages of the supported photocatalytic net are: (1) the dispersion degree of titanium dioxide is reduced, and the contact area with the reactant is small; (2) the supported substrate is often unable to be heat-treated, and an effective composite crystal structure cannot be formed; (3) the binding force of the loaded substrate Not good, easy to be polluted by oil, and the service life is not high
[0003] At present, the technology of photocatalytic treatment of water pollution has been widely used. Titanium dioxide is mostly used as photocatalytic material, which has a remarkable effect on the treatment of organic matter in water, but the efficiency of treatment of heavy metal ions in wastewater is low.

Method used

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  • A kind of application magneti phase mesoporous titanium suboxide ti <sub>4</sub> o <sub>7</sub> Method for treating heavy metal waste liquid
  • A kind of application magneti phase mesoporous titanium suboxide ti <sub>4</sub> o <sub>7</sub> Method for treating heavy metal waste liquid
  • A kind of application magneti phase mesoporous titanium suboxide ti <sub>4</sub> o <sub>7</sub> Method for treating heavy metal waste liquid

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Embodiment 1

[0034] A Mesoporous Titanium Suboxide Ti Using Magneli Phase 4 o 7 The method for processing heavy metal waste liquid, the method comprises the steps of: making Magneli phase mesoporous titanium suboxide Ti 4 o 7 Place in heavy metal waste liquid, and irradiate the Magneli phase mesoporous titanium dioxide Ti with light 4 o 7 , after reacting with the heavy metal ions in the heavy metal waste liquid, the Magneli phase mesoporous titanium suboxide Ti 4 o 7 Solids containing heavy metals are formed on the surface.

[0035] The power of the light irradiation is 300W, and the wavelength of the light irradiation is 200-1200nm.

[0036] The Magneli phase mesoporous titanium oxide Ti 4 o 7 The preparation method of the invention comprises the following steps: firstly immersing the titanium substrate as the anode in the electrolyte, and immersing the end of the cathode substrate in the electrolyte, then applying a certain voltage between the cathode and the anode, and performi...

Embodiment 2

[0041] The difference between this embodiment and embodiment 1 is:

[0042] The power of the light irradiation is 5W, and the wavelength of the light irradiation is 200-1200nm.

[0043] The applied voltage is 200V.

[0044]The titanium substrate is foamed titanium; the cathode substrate is a rod-shaped conductor containing a pointed structure, and the rod-shaped conductor is iron; the electrolyte is an acidic solution with a hydrogen ion concentration of 0.01mol / L, and the acidic solution For sulfuric acid - aqueous solution.

[0045] The Magneli phase mesoporous titanium oxide Ti 4 o 7 Magneli phase mesoporous titanium suboxide Ti with a thickness of 0.1 μm 4 o 7 thin layer; the Magneli phase mesoporous titanium suboxide Ti 4 o 7 The thin layer has lattice defects and contains at least oxygen vacancies.

Embodiment 3

[0047] The difference between this embodiment and embodiment 1 is:

[0048] The power of the light irradiation is 1000W, and the wavelength of the light irradiation is 200-1200nm.

[0049] The applied voltage is 1000V.

[0050] The titanium substrate is a titanium plate; the cathode substrate is a rod-shaped conductor containing a pointed structure, and the rod-shaped conductor is titanium; the electrolyte is an acidic solution with a hydrogen ion concentration of 10mol / L, and the acidic solution is Hydrochloric acid - aqueous solution.

[0051] The Magneli phase mesoporous titanium oxide Ti 4 o 7 It is a Magneli phase mesoporous titanium suboxide Ti with a thickness of 800 μm 4 o 7 thin layer; the Magneli phase mesoporous titanium suboxide Ti 4 o 7 The thin layer has lattice defects and contains at least trivalent titanium.

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Abstract

The invention relates to the technical field of heavy metal wastewater treatment, in particular to a method for applying Magneli phase mesoporous titanium dioxide Ti 4 o 7 The method for processing heavy metal waste liquid, the method comprises the steps of: making Magneli phase mesoporous titanium suboxide Ti 4 o 7 Place in heavy metal waste liquid, and irradiate the Magneli phase mesoporous titanium dioxide Ti with light 4 o 7 , after reacting with the heavy metal ions in the heavy metal waste liquid, the Magneli phase mesoporous titanium suboxide Ti 4 o 7 Solids containing heavy metals are formed on the surface. The present invention uses the photocatalytic material Magneli phase mesoporous titanium suboxide Ti 4 o 7 Treatment of heavy metal ions in waste liquid, using Magneli phase mesoporous titanium suboxide Ti 4 o 7 The photocatalytic activity can reduce heavy metal ions into low-grade or non-toxic inorganic substances by photooxidation, so as to achieve the effect of removing heavy metal ions. It is easy to operate and can be used for large-scale waste liquid treatment.

Description

technical field [0001] The invention relates to the technical field of heavy metal wastewater treatment, in particular to a method for applying Magneli phase mesoporous titanium dioxide Ti 4 o 7 A method for treating heavy metal waste liquid. Background technique [0002] As a typical semiconductor photocatalyst, titanium dioxide is widely used in photocatalytic hydrogen production, solar cells, sewage treatment and other fields because of its green, cheap and stable chemical properties. Like most semiconductor catalysts, titanium dioxide photocatalysts only absorb ultraviolet light and have extremely low utilization rates for visible light. At present, many methods can reduce titanium dioxide to black titanium dioxide, realize enhanced visible light absorption, and improve visible light catalytic ability. These methods include hydrogenation treatment, thermite reaction, laser plasma treatment, etc., but the above-mentioned methods have the disadvantages of high energy co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/461C02F1/467B01J21/06B01J35/10B01J37/34C02F101/20
Inventor 曾和平冯光
Owner GUANGDONG ROI OPTOELECTRONICS TECH CO LTD