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Titanium-based doped titania photocatalytic net and manufacturing method thereof

A manufacturing method and nano-titanium dioxide technology, which are applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems such as the inability of supported photocatalytic nets to meet environmental protection requirements and the inability of membranes to be put into practical use. To achieve the effect of high passability, good binding force and simple process flow

Active Publication Date: 2018-04-03
长沙立兴环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the deficiencies of the prior art. The technical problem to be solved by the present invention is to manufacture a titanium-based doped titanium dioxide photocatalytic net, which solves the problem that the existing suspended titanium dioxide / agent and loaded photocatalytic net cannot meet environmental protection requirements. Requirements and Preparation of TiO by Micro-arc Oxidation 2 The problem that the membrane cannot be put into practical use enables the photocatalytic network to perform photocatalysis in a long-term, effective and stable manner.

Method used

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  • Titanium-based doped titania photocatalytic net and manufacturing method thereof
  • Titanium-based doped titania photocatalytic net and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A method for manufacturing a titanium-based doped nano-titanium dioxide photocatalytic net, comprising the following steps:

[0041] (1) Making a photocatalytic net from a titanium-based stretched net as a base material, the photocatalytic net includes grid reinforcing wires and a molding frame arranged around the grid reinforcing wires;

[0042](2) Pretreat the photocatalytic net, place the photocatalytic net in an ultrasonic cleaning machine and use an alkaline metal cleaner to clean and remove oil; (3) Micro-arc the pretreated photocatalytic net Oxidation treatment, the time of micro-arc oxidation is 5min, and the current density is 1A / dm 2 ;

[0043] (4) Put the photocatalytic net after micro-arc oxidation treatment into a closed tank for hot water sealing, dry it, and then anneal it. The annealing temperature is 450°C, and the annealing time is 60 minutes. After cooling, the titanium-based Doped nano titanium dioxide photocatalytic mesh.

[0044] The steps for ...

Embodiment 2

[0046] Same as Example 1, the difference is:

[0047] The steps for preparing the micro-arc oxidation solution are as follows: under magnetic stirring, add sodium phosphate 8g / L, sodium fluoride 4g / L, and then add regulator sodium citrate 1.5g / L to the electrolytic cell filled with deionized water, Stabilizer sodium hydroxide 1.5g / L, and finally add nano silicon dioxide 3g / L as a dopant.

[0048] The annealing temperature is 500°C, and the annealing time is 90min.

[0049] The titanium-based doped nano-TiO produced in this embodiment 2 The semi-finished and finished products of the photocatalytic net are as follows: figure 1 , figure 2 shown.

Embodiment 3

[0051] Same as Example 1, the difference is:

[0052] The steps for preparing the micro-arc oxidation solution are as follows: under magnetic stirring, add sodium phosphate 10 / 3 g / L, sodium fluoride 5 / 3 g / L to the electrolytic cell filled with deionized water, and then add the regulator citric acid Sodium 1g / L, stabilizer sodium hydroxide 1g / L, and finally add nano silicon dioxide 5g / L as a dopant.

[0053] The annealing temperature is 550°C, and the annealing time is 120min.

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Abstract

The invention discloses a manufacturing method of a titanium-based doped nanometer titania photocatalytic net. The manufacturing method comprises (1) preparing a photocatalytic net from a titanium-based drawn net as a substrate, (2) pre-treating the photocatalytic net and washing the photocatalytic net in an ultrasonic cleaner through an alkaline metal cleaner to remove oil, (3) carrying out micro-arc oxidation on the pre-treated photocatalytic net for 5-10min at current density of 1-10 A / dm<2>, and (4) putting the photocatalytic net subjected to micro-arc oxidation into a closed tank, carrying out hot water sealing, carrying out drying, carrying out annealing at an annealing temperature of 450-550 DEG C for 60-120min, and carrying out cooling to obtain the titanium-based doped nanometer titania photocatalytic net. The preparation method has simple processes and is environmentally friendly. A metal oxide film is formed on the surface of the substrate in situ and the bonding effect between the film layer and the substrate is very good.

Description

technical field [0001] The invention relates to the technical field of a photocatalytic net, in particular to a titanium-based doped titanium dioxide photocatalytic net and a manufacturing method thereof. Background technique [0002] With the further extension of photocatalytic technology, TiO as a semiconductor material 2 Because of its non-toxic, high activity and high stability, it has become the most suitable photocatalytic material for nano organic wastewater and waste gas. TiO2 that is actually put into practical use 2 Photocatalytic technology mainly includes two types of suspended titanium dioxide / agent (doped or compounded) and supported (sol-gel method) photocatalytic network, and its disadvantages are as follows. The disadvantages of photocatalysts are: a) It is difficult to separate and recycle the catalyst ; b) It is easy to pollute the water body and cannot be reused; c) It has poor stability and is easy to block other filter devices; the disadvantages of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06
CPCB01J21/063B01J35/56B01J35/39
Inventor 叶仁锋叶友谦叶远柱
Owner 长沙立兴环保科技有限公司
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