In-situ preparation method of titanium dioxide-based metal oxide composite nano-catalyst material

A nano-catalyst, titanium dioxide technology, applied in the field of in-situ preparation of titanium dioxide-based metal oxide composite nano-catalyst materials, to achieve the effect of low cost and simple process

Inactive Publication Date: 2020-02-25
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there have been reports on the preparation of metal oxides by plasma discharge oxidation, most of them are used to prepare thicker oxide layers for corrosion resistance of metal surfaces and to improve wear resistance.

Method used

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  • In-situ preparation method of titanium dioxide-based metal oxide composite nano-catalyst material
  • In-situ preparation method of titanium dioxide-based metal oxide composite nano-catalyst material
  • In-situ preparation method of titanium dioxide-based metal oxide composite nano-catalyst material

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Experimental program
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Effect test

Embodiment 1

[0084] This embodiment is the in-situ growth of titanate or titanium dioxide nanosheets on the surface of the Ti mesh metal substrate, as follows:

[0085] 1. Add 1L deionized water to the beaker, and add 10g Na 3 PO 4 12H 2 O, after mixing evenly, an electrolyte solution for liquid-phase plasma discharge is obtained.

[0086] 2. Using industrial pure titanium (Gr1) as the substrate, firstly cut the titanium mesh into a suitable size, and then pretreat it. Put the Ti net into acetone and ultrasonically 15min to remove the oil on the surface, then rinse the remaining acetone with deionized water, then put the Ti net into water at room temperature: nitric acid: hydrofluoric acid = 5:4:1 (volume than) treatment for 60s to remove the oxide layer on the surface, and finally washed with deionized water and absolute ethanol.

[0087] 3. Put the electrolyte obtained in step 1 into a stainless steel electrolytic cell, then use the pretreated Ti mesh as an anode electrode, and the s...

Embodiment 2

[0093] This embodiment is a transition metal oxide co-catalyst nanomaterial modified on the surface of titanium dioxide nanosheets, specifically as follows:

[0094] 1. Add 1L deionized water to the beaker, and add 10g Na 3 PO 4 12H 2 O, after mixing evenly, the electrolyte solution for liquid-phase plasma discharge is obtained.

[0095] 2. Using industrial pure titanium (Gr1) as the substrate, firstly cut the titanium mesh into a suitable size, and then pretreat it. Put the Ti net into acetone and ultrasonically 15min to remove the oil on the surface, then rinse the remaining acetone with deionized water, then put the Ti net into water at room temperature: nitric acid: hydrofluoric acid = 5:4:1 (volume than) treatment for 60s to remove the oxide layer on the surface, and finally washed with deionized water and absolute ethanol.

[0096] 3. Put the electrolyte obtained in step 1 into a stainless steel electrolytic cell, then use the pretreated Ti mesh as an anode electrode...

Embodiment 3

[0102] This embodiment is a transition metal oxide modified on the surface of titanium dioxide nanosheets, specifically as follows:

[0103] 1. Add 1L deionized water to the beaker, and add 10g Na 3 PO 4 12H 2 O, after mixing evenly, the electrolyte solution for liquid-phase plasma discharge is obtained.

[0104] 2. Using industrial pure titanium (Gr1) as the substrate, firstly cut the titanium mesh into a suitable size, and then pretreat it. Put the Ti net into acetone and ultrasonically 15min to remove the oil on the surface, then rinse the remaining acetone with deionized water, then put the Ti net into water at room temperature: nitric acid: hydrofluoric acid = 5:4:1 (volume than) treatment for 60s to remove the oxide layer on the surface, and finally washed with deionized water and absolute ethanol.

[0105] 3. Put the electrolyte obtained in step 1 into a stainless steel electrolytic cell, then use the pretreated Ti mesh as an anode electrode, and the stainless steel...

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Abstract

The invention relates to the fields of in-situ growth, morphology and density regulation of titanium dioxide-based metal oxide catalysts, environmental catalytic purification, oxidation film formation, nano-materials and nanotechnology, and concretely relates to an in-situ preparation method of a titanium dioxide-based metal oxide composite nano-catalyst material. A metal oxide seed layer directlygrows on the surface of a metal substrate by using a liquid-phase plasma discharge technology, the metal substrate can be in any shape, a nano-material directly grows on the surface of the seed layerby combining hydrothermal and ion exchange processes, and surface modification is carried out. The prepared titanium dioxide-based metal oxide catalyst material has the advantages of strong film-substrate binding force, good crystallinity, large active area, uniform material size, uniform growth distribution, adjustable morphology and high catalytic activity, and can be applied to the fields of photocatalytic degradation of organic pollutants, automobile tail gas treatment, denitration and desulfurization treatment, industrial waste gas treatment, CO catalytic oxidation and related environment catalytic purification.

Description

technical field [0001] The invention relates to the fields of in-situ growth, morphology and density control of titanium dioxide-based metal oxide catalysts, environmental catalytic purification, oxidation film formation, nanomaterials and nanotechnology, and specifically relates to the in-situ development of a titanium dioxide-based metal oxide composite nanocatalyst material Preparation. Background technique [0002] At present, with the continuous development of the economy, a series of environmental pollution problems caused by it are becoming more and more serious, especially the abnormal climate and smog that have occurred continuously in recent years. These environmental pollution mainly come from the emission of harmful substances in automobile exhaust, incompletely burned CO, various incompletely burned hydrocarbons and nitrogen oxides in industrial waste gas produced by chemical plants, power plants, steel plants, cement plants and waste incineration. substances, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/745B01J23/889
CPCB01J23/34B01J23/745B01J23/8892B01J35/004
Inventor 刘宝丹唐欣悦王俊超王柯李晶张兴来
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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