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Method for preparing loaded type Y-type molecular sieve membrane anode material for photoelectric catalytic oxidation

A photoelectric catalysis and molecular sieve technology, applied in chemical instruments and methods, light water/sewage treatment, energy and wastewater treatment, etc., can solve the problems of low visible light photocatalytic efficiency, long preparation process, low adsorption efficiency, etc. The effect of catalytic performance, convenient operation and fast degradation rate

Inactive Publication Date: 2015-01-14
YANGZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carriers such as ceramics, metal sheets, and glass have the disadvantages of poor firmness, low adsorption efficiency, and low photocatalytic efficiency under visible light.
However, if inorganic oxides and zeolite molecular sieve particles are used as photocatalytic materials to be applied to wastewater treatment, preparation processes such as molding and granulation are still required. Therefore, the preparation process is long, the operation is complicated, the cost is high, and it is easy to cause secondary pollution and other problems.

Method used

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  • Method for preparing loaded type Y-type molecular sieve membrane anode material for photoelectric catalytic oxidation

Examples

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Effect test

example 1

[0040] Example 1: Dissolve 2mL of tetra-n-butyl titanate in 30mL of absolute ethanol to form mixed solution A, and stir. Add 10 mL of concentrated nitric acid dropwise to mixed solution A to form mixed solution B, and stir.

[0041] The mixed solution B was slowly added dropwise into 50 mL of deionized water, stirred evenly and left to stand for a period of time to form Sol C.

[0042] Sol C is slowly added dropwise onto the prepared supported Y-type molecular sieve membrane under the condition of stirring until the whole molecular sieve membrane support is submerged. After standing for 48 hours, rinse with deionized water and dry. Put it into 40mL of n-butylamine, let it stand for 12h, rinse it with deionized water, and dry it. Finally, put it into a muffle furnace and bake at 800° C. for 2 hours to prepare a Y-type molecular sieve membrane-loaded nitrogen-doped titanium dioxide.

[0043] Application: such as figure 1 Assembled photoelectric catalytic oxidation device sho...

example 2

[0044] Example 2: Dissolve 5 mL of tetra-n-butyl titanate in 10 mL of absolute ethanol to form mixed solution A, and stir. Add 6 mL of concentrated nitric acid dropwise to mixed solution A to form mixed solution B, and stir.

[0045] The mixed solution B was slowly added dropwise to 40mL deionized water, stirred evenly and left to stand for a period of time to form Sol C.

[0046] Sol C is slowly added dropwise onto the prepared supported Y-type molecular sieve membrane under the condition of stirring until the whole molecular sieve membrane support is submerged. After standing for 12 hours, rinse with deionized water and dry. Then put it into 30mL of n-butylamine, let it stand for 48h, rinse it with deionized water, and dry it. Finally, put it into a muffle furnace and bake at 300° C. for 10 hours to prepare a Y-type molecular sieve membrane-loaded nitrogen-doped titanium dioxide.

[0047] Application: This material is used as an anode material for photoelectric catalytic ...

example 3

[0048] Example 3: Dissolve 10 mL of tetra-n-butyl titanate in 20 mL of absolute ethanol to form mixed solution A, and stir. Add 2 mL of concentrated nitric acid dropwise to mixed solution A to form mixed solution B, and stir.

[0049] Slowly add B to 60mL deionized water dropwise, stir evenly and let it stand for a while to form Sol C.

[0050] Sol C is slowly added dropwise onto the prepared supported Y-type molecular sieve membrane under the condition of stirring until the whole molecular sieve membrane support is submerged. After standing for 36 hours, rinse with deionized water and dry. Then put it into 40mL of n-butylamine, let it stand for 36h, rinse it with deionized water, and dry it. Finally, put it into a muffle furnace and bake at 500° C. for 5 hours to prepare a Y-type molecular sieve membrane-loaded nitrogen-doped titanium dioxide.

[0051] Application: This material is used as an anode material to treat phenol wastewater by photoelectric catalytic oxidation. T...

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Abstract

The invention discloses a method for preparing a loaded type Y-type molecular sieve membrane anode material for photoelectric catalytic oxidation, belonging to the technical field of photoelectric catalytic oxidation sewage treatment. The method comprises the following steps: by adopting a Y-type molecular sieve structure guide agent as a crystal seed, performing electrochemical pre-adsorption on the crystal seed to secondarily grow on a conductive support body, so as to prepare a Y-type molecular sieve membrane, and loading nitrogen-doped titanium dioxide on the Y-type molecular sieve membrane by using a sol-gel method. The method is low in cost, simple in equipment, convenient and rapid to operate, high in repeatability in preparing the molecular sieve membrane, high in phenol degradation speed and remarkable in degradation effect.

Description

technical field [0001] The invention belongs to the technical field of photoelectric catalytic oxidation treatment of wastewater, and in particular relates to a preparation technology of a loaded Y-type molecular sieve membrane anode material for photoelectric catalytic oxidation. technical background [0002] my country's industrial wastewater such as phenol is seriously polluted, so how to efficiently treat industrial wastewater will directly affect people's vital interests and safety. Among them, photocatalytic oxidation and electrocatalytic oxidation are very promising water treatment technologies. The cores of photocatalytic oxidation and electrocatalytic oxidation are photocatalysts and electrode materials, respectively. [0003] Photocatalytic oxidation is based on the energy band theory of semiconductors, mainly referring to titanium dioxide with high photocatalytic efficiency and low cost. Pure titanium dioxide (TiO 2 ) itself only has photocatalytic properties u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/467C02F1/30
CPCY02W10/37C02F1/4672C02F1/30C02F1/46109C02F2001/46133C02F2001/46142
Inventor 程志林韩帅
Owner YANGZHOU UNIV
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