CN105126851A - Preparation method of ferric oxide doped diphasic titanium dioxide film serving as visible-light-induced photocatalyst - Google Patents
Preparation method of ferric oxide doped diphasic titanium dioxide film serving as visible-light-induced photocatalyst Download PDFInfo
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Abstract
The invention provides a preparation method of a ferric oxide doped diphasic titanium dioxide film serving as a visible-light-induced photocatalyst. Firstly, oil removal and decontamination cleaning and other conventional surface cleaning are conducted on the surface of a steel and iron material; the steel and iron material serves as an anode and is arranged in an electrolyte solution to be subjected to micro-arc oxidation treatment; a steel and iron sample having a micro-arc oxidation film on the surface is simply cleaned and dried to obtain a sample; the sample obtained in the step 3 is subjected to heat treatment to obtain a target product. The electrolyte solution contains, at least, aluminate, dihydric phosphate, sulfate and titanium dioxide powder. The prepared ferric oxide doped diphasic titanium dioxide film is used for visible-light-induced catalytic degradation of methylene blue and has very good degradation effect. The preparation method is stable and reliable in process, convenient to operate and easy to master, the adopted devices are simple, reaction is performs at the normal temperature, and the electrolyte solution is an environmentally friendly solution and meets the requirement for environmental protection discharge.
Description
Technical field
The present invention relates to differential arc oxidization technique and post-processing technology thereof, refer in particular to a kind of method preparing iron oxide doping two-phase titanium deoxid film at steel surface, the iron oxide doping two-phase titanium deoxid film prepared by the method can be used for visible light photocatalytic degradation of organic pollutants, especially can be used for visible light photocatalytic degradation methylene blue.
Background technology
Photocatalysis field is the focus of scientific research always, is also one of difficult point.Semiconductor catalyst is considered to the good catalyst of effect always, comprises titanium oxide, zinc oxide, titanium oxide etc.Wherein, titanium dioxide, is widely studied owing to having good combination property.Especially the titanium dioxide after doping, has good visible light activity, can realize such as photovoltaic effect, water treatment, organic matter degradation etc. under visible ray shines.Titanium dioxide has the various structures such as brilliant red stone, anatase, brockite.Research shows, the mixed structure of the red stone of a certain amount of crystalline substance and anatase has good catalytic performance, and iron oxide doping can significantly improve the visible light activity of titanium dioxide.Therefore, scientific research personnel to adopt multiple method to prepare iron oxide titania-doped.
Differential arc oxidization technique is the process for modifying surface grown up in recent years, this technology is used to prepare various film at material surface especially metal surface, both can improve the performance of metallic matrix, and also can obtain various function film simultaneously, become the focus in investigation of materials field.Originally differential arc oxidization technique is obtain application on so-called valve metal and alloy surface process thereof, as Al, Mg, Ti and alloy thereof, also has scholar in recent years gradually in the research carrying out iron differential arc oxidation.This seminar has carried out some to steel surface differential arc oxidation study on the modification and has inquired into, and has prepared wear-and corrosion-resistant film and photo-catalysis function film at steel surface.The present invention first utilizes differential arc oxidation at the titanium deoxid film of steel surface preparation containing ferro element, then heat treatment is passed through, obtain the titania-doped film of iron oxide with brilliant red stone and anatase double structure, research shows that this film has higher visible light catalysis activity.
Summary of the invention
The object of this invention is to provide and a kind ofly prepare the method for iron oxide doping two-phase titanium deoxid film at steel surface by differential arc oxidation, it is a new method at steel surface Kaolinite Preparation of Catalyst film, the method first prepares titanium deoxid film by differential arc oxidation at steel surface, then by heat treatment obtain have brilliant red stone and anatase structured and possess iron oxide doping titanium deoxid film.The method is study the in-depth of differential arc oxidation, expand application, simultaneously also for the titanium dioxide thin film catalyst with visible light catalysis activity provides a kind of attachment carrier newly, and namely cheap steel substrate.The present invention is applicable to various carbon steels, steel alloy etc. except stainless steel.
The present invention is achieved through the following technical solutions:
A kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method, comprises the steps:
Step 1, first steel material surface is carried out to the cleaning of the conventional surface such as deoiling cleaning;
Step 2, using ferrous materials as anode, be placed in electrolyte solution, carry out differential arc oxidation process;
Step 3, steel sample surface with micro-arc oxidation films simply clean and dry, are heat-treated by dried sample, obtain target product.
For realizing the object of steel surface differential arc oxidation film layer, in described step 2, electrolyte solution at least should comprise each component of following concentration: 0.1 ~ 0.8mol/L aluminate, 0.01 ~ 0.1mol/L dihydric phosphate, 0.01 ~ 0.1mol/L sulfate, 2 ~ 60g/L titania powder.
Micro-arc oxidation process of the present invention adopts two-way or unidirectional pulse power supply, and voltage is 400 ~ 600V, and current density is at 2 ~ 15A/dm
2between, reaction time 15 ~ 50min.
Described heat-treating methods is: adopt box heat treatment furnace, in air atmosphere, firing rate is under 8 ~ 10 DEG C/min condition, is heated to 800 DEG C, and is incubated 4 ~ 6 hours, cool to room temperature with the furnace.
In order to improve the adjustment stability of micro-arc oxidation process and the quality of rete, electrolyte solution is also containing at least one in phosphate, pyrophosphate, ammonium dihydrogen phosphate (ADP); Phosphate concn is 0 ~ 0.2mol/L, and pyrophosphate concentration is 0 ~ 0.1mol/L, biphosphate ammonium concentration is 0 ~ 0.2mol/L.
Described aluminate, dihydric phosphate, sulfate, phosphate, pyrophosphate are sodium salt or sylvite.
Further, electrolyte solution is containing, for example each component of lower concentration: 0.1 ~ 0.4mol/L sodium aluminate and 0.01 ~ 0.05mol/L sodium dihydrogen phosphate, 0.01 ~ 0.05mol/L sodium sulphate, 10 ~ 30g/L titania powder, 0 ~ 0.05mol/L sodium phosphate.
Further, electrolyte solution is containing, for example each component of lower concentration: 0.4 ~ 0.6mol/L sodium aluminate and 0.05 ~ 0.08mol/L potassium dihydrogen phosphate, 0.05 ~ 0.08mol/L sodium sulphate, 2 ~ 10g/L titania powder, 0.05 ~ 0.1mol/L sodium phosphate, 0.03 ~ 0.07mol/L sodium pyrophosphate.
Further, electrolyte solution is containing, for example each component of lower concentration: 0.6 ~ 0.8mol/L sodium aluminate and 0.08 ~ 0.1mol/L potassium dihydrogen phosphate, 0.08 ~ 0.1mol/L sodium sulphate, 30 ~ 60g/L titania powder, 0.1 ~ 0.2mol/L sodium phosphate, 0.07 ~ 0.1mol/L sodium pyrophosphate, 0.1 ~ 0.2mol/L ammonium dihydrogen phosphate (ADP).
Adulterate two-phase titanium deoxid film for visible light photocatalytic degradation methylene blue according to iron oxide prepared by said method.
The mechanism of each step, component and effect:
Differential arc oxidation: by differential arc oxidation, obtains the film containing elements such as titanium, oxygen, iron.In above-mentioned electrolyte system, realize steel surface differential arc oxidation, and obtain rete, its rete main component common denominator is in electrolyte and matrix, and if the elements such as target titanium, oxygen are mainly from electrolyte, ferro element is mainly from matrix; Phosphate, pyrophosphate, ammonium dihydrogen phosphate (ADP) are selectable components, can add as required and add on a small quantity or not.
Heat treatment: by heat treatment, makes the transformation of rete generation crystal structure, thus obtains target crystalline phase.
The concrete preparation method of electrolyte:
When constantly stirring, first soluble constituent being dissolved in deionized water, such as, under constantly stirring, adding appropriate sodium aluminate successively in deionized water, sodium dihydrogen phosphate, sodium sulphate, then adding titania powder etc. respectively.
Distinctive feature of the present invention and beneficial effect are:
(1) utilize the pulse power and suitable electrolyte system, activate and strengthen iron and steel, on anode, chemical process occurs, produce plasma reaction, achieve the differential arc oxidation of iron and steel, expand the range of application of traditional differential arc oxidation; Realize steel surface iron oxide to adulterate and the preparation containing the film of brilliant red stone and anatase two-phase titanium dioxide, in differential arc oxidation field and compounding method thereof, have no report.
(2) the present invention is applicable to various carbon steel, cast iron, steel alloy etc., and Body regions is extensive.
(3) film being attached to steel surface has good visible light catalysis activity, prepared iron oxide doping two-phase titanium deoxid film is used for visible light photocatalytic degradation methylene blue, has good degradation effect, can reach the degradation rate of 89%.
(4) process stabilizing of the present invention is reliable, and the equipment of employing is simple, and reaction is carried out at normal temperatures, easy to operate, and be easy to grasp, electrolyte solution is environment-friendly type solution, meets environment protection emission requirement.
Accompanying drawing explanation
Fig. 1 is the SEM figure of sample surfaces film prepared by embodiment 1;
Fig. 2 is the XRD collection of illustrative plates of sample surfaces film prepared by embodiment 1;
Fig. 3 is the XPS fine scanning spectrum of sample surfaces film prepared by embodiment 1;
Fig. 4 is the design sketch of sample for 6 circulation visible light photocatalytic degradation methylene blues of embodiment 1 preparation.
Detailed description of the invention
Below in conjunction with specific embodiment to the present invention be further illustrate:
Embodiment 1:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.1 ~ 0.4mol/L sodium aluminate, 0.01 ~ 0.05mol/L sodium dihydrogen phosphate, 0.01 ~ 0.5mol/L sodium sulphate, 10 ~ 30g/L titania powder.
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. pair film obtained carries out structural characterization and performance test.
Its surface topography is as Fig. 1, and surface is in porous coarse structure, and this construction might be advantageous in the surface area increasing catalyst, thus increases surface-catalyzed reactions point.Fig. 2 is shown in by XRD collection of illustrative plates, and this figure demonstrates film and has brilliant red stone, anatase and iron oxide crystal composition.XPS fine scanning is shown in Fig. 3, and this figure demonstrates the existence of iron oxide again.Fig. 4 is shown in photocatalysis test, and be the visible light photocatalytic degradation to methyl blue under visible ray illumination, under the illumination of 4 hours, degradation rate reaches 88%, and circulation light catalytic performance is better.Priority has carried out 6 same photocatalysis experiments, 3 times all maintains higher activity.
Embodiment 2:
1. deoiling cleaning is carried out on pair 30CrMnSi steel alloy surface.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.1 ~ 0.4mol/L sodium aluminate, 0.01 ~ 0.05mol/L sodium dihydrogen phosphate, 0.01 ~ 0.05mol/L sodium sulphate, 10 ~ 30g/L titania powder, 0 ~ 0.05mol/L sodium phosphate.
3. 30CrMnSi steel alloy is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the steel alloy of micro-arc oxidation films heat-treats 6 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 87%.
Embodiment 3:
1. deoiling cleaning is carried out on pair 30CrMnSi steel alloy surface.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.4 ~ 0.6mol/L sodium aluminate and 0.05 ~ 0.08mol/L potassium dihydrogen phosphate, 0.05 ~ 0.08mol/L sodium sulphate, 2 ~ 10g/L titania powder, 0.05 ~ 0.1mol/L sodium phosphate, 0.03 ~ 0.07mol/L sodium pyrophosphate.
3. 30CrMnSi steel alloy is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the steel alloy of micro-arc oxidation films heat-treats 6 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 88%.
Embodiment 4:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.6 ~ 0.8mol/L sodium aluminate, 0.08 ~ 0.1mol/L sodium dihydrogen phosphate, 0.08 ~ 0.1mol/L sodium sulphate, 30 ~ 60g/L titania powder, 0.1 ~ 0.2mol/L sodium phosphate, 0.07 ~ 0.1mol/L sodium pyrophosphate, 0.1 ~ 0.2mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, product of changing products can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 89%.
Embodiment 5:
1. deoiling cleaning is carried out on pair 30CrMnSi steel alloy surface.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.4 ~ 0.6mol/L sodium aluminate and 0.05 ~ 0.08mol/L potassium dihydrogen phosphate, 0.05 ~ 0.08mol/L sodium sulphate, 2 ~ 10g/L titania powder, 0.05 ~ 0.1mol/L sodium phosphate, 0 ~ 0.03mol/L sodium pyrophosphate.
3. 30CrMnSi steel alloy is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the steel alloy of micro-arc oxidation films heat-treats 6 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 84%.
Embodiment 6:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.6 ~ 0.8mol/L sodium aluminate, 0.08 ~ 0.1mol/L sodium dihydrogen phosphate, 0.08 ~ 0.1mol/L sodium sulphate, 30 ~ 60g/L titania powder, 0.1 ~ 0.2mol/L sodium phosphate, 0.07 ~ 0.1mol/L sodium pyrophosphate, 0.05 ~ 0.1mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 88%.
Embodiment 7:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.6 ~ 0.8mol/L sodium aluminate, 0.08 ~ 0.1mol/L sodium dihydrogen phosphate, 0.08 ~ 0.1mol/L sodium sulphate, 30 ~ 60g/L titania powder, 0.1 ~ 0.2mol/L sodium phosphate, 0.07 ~ 0.1mol/L sodium pyrophosphate, 0 ~ 0.05mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 ~ 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 87%.
Embodiment 8:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.1mol/L sodium aluminate, 0.01mol/L sodium dihydrogen phosphate, 0.01mol/L sodium sulphate, 30g/L titania powder.
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 400 ~ 600V, current density 5 ~ 20A/dm
2, process 15 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 86%.
Embodiment 9:
1. deoiling cleaning is carried out on pair 30CrMnSi steel alloy surface.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.4mol/L sodium aluminate, 0.05mol/L sodium dihydrogen phosphate, 0.05mol/L sodium sulphate, 2g/L titania powder, 0.05mol/L sodium phosphate.
3. 30CrMnSi steel alloy is carried out differential arc oxidation process as anode, voltage 400V, current density 5A/dm
2, process 30 minutes.
4. by Surface Creation, the steel alloy of micro-arc oxidation films heat-treats 6 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 88%.
Embodiment 10:
1. deoiling cleaning is carried out on pair 30CrMnSi steel alloy surface.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.6mol/L sodium aluminate and 0.08mol/L potassium dihydrogen phosphate, 0.08mol/L sodium sulphate, 10g/L titania powder, 0.1mol/L sodium phosphate, 0.03mol/L sodium pyrophosphate.
3. 30CrMnSi steel alloy is carried out differential arc oxidation process as anode, voltage 500V, current density 10A/dm
2, process 50 minutes.
4. by Surface Creation, the steel alloy of micro-arc oxidation films heat-treats 6 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 88%.
Embodiment 11:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.8mol/L sodium aluminate, 0.1mol/L sodium dihydrogen phosphate, 0.1mol/L sodium sulphate, 60g/L titania powder, 0.1mol/L sodium phosphate, 0.07mol/L sodium pyrophosphate, 0.2mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 600V, current density 20A/dm
2, process 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 89%.
Embodiment 12:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.8mol/L sodium aluminate, 0.1mol/L sodium dihydrogen phosphate, 0.1mol/L sodium sulphate, 60g/L titania powder, 5mol/L sodium phosphate, 1mol/L sodium pyrophosphate, 0.05mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 600V, current density 20A/dm
2, process 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 88%.
Embodiment 13:
1. pair Q235 steel surface carries out deoiling cleaning.
2. preparation is containing, for example the electrolyte of the component of lower concentration: 0.8mol/L sodium aluminate, 0.1mol/L sodium dihydrogen phosphate, 0.1mol/L sodium sulphate, 60g/L titania powder, 5mol/L sodium phosphate, 1mol/L sodium pyrophosphate, 0.1mol/L ammonium dihydrogen phosphate (ADP).
3. Q235 carbon steel is carried out differential arc oxidation process as anode, voltage 600V, current density 20A/dm
2, process 50 minutes.
4. by Surface Creation, the carbon steel of micro-arc oxidation films heat-treats 4 hours at 800 DEG C, and cools with stove.
5. the film pair obtained carries out structural characterization and performance test, product phenogram and Fig. 1 ~ Fig. 3 similar, show the successful preparation of product, this product can be used for visible light photocatalytic degradation methylene blue equally, and degradation rate reaches 87%.
Claims (9)
1. an iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method, comprises the steps:
Step 1, first steel material surface is carried out to the cleaning of the conventional surface such as deoiling cleaning;
Step 2, using ferrous materials as anode, be placed in electrolyte solution, carry out differential arc oxidation process;
Step 3, steel sample surface with micro-arc oxidation films simply clean and dry, are heat-treated by dried sample, obtain target product;
It is characterized in that: for realizing the object of steel surface differential arc oxidation film layer, in step 2, described electrolyte solution at least should comprise each component of following concentration: 0.1 ~ 0.8mol/L aluminate, 0.01 ~ 0.1mol/L dihydric phosphate, 0.01 ~ 0.1mol/L sulfate, 2 ~ 60g/L titania powder.
2. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 1, it is characterized in that, described differential arc oxidation adopts two-way or unidirectional pulse power supply, and voltage is 400 ~ 600V, and current density is at 2 ~ 15A/dm
2between, reaction time 15 ~ 50min.
3. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 1, it is characterized in that, described heat-treating methods is: adopt box heat treatment furnace, in air atmosphere, firing rate is under 8 ~ 10 DEG C/min condition, be heated to 800 DEG C, and be incubated 4 ~ 6 hours, cool to room temperature with the furnace.
4. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 1, it is characterized in that, in order to improve the adjustment stability of micro-arc oxidation process and the quality of rete, electrolyte solution is also containing at least one in phosphate, pyrophosphate, ammonium dihydrogen phosphate (ADP); Phosphate concn is 0 ~ 0.2mol/L, and pyrophosphate concentration is 0 ~ 0.1mol/L, biphosphate ammonium concentration is 0 ~ 0.2mol/L.
5. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 1 or 4, it is characterized in that, described aluminate, dihydric phosphate, sulfate, phosphate, pyrophosphate are sodium salt or sylvite.
6. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 5, it is characterized in that, electrolyte solution is containing, for example each component of lower concentration: 0.1 ~ 0.4mol/L sodium aluminate and 0.01 ~ 0.05mol/L sodium dihydrogen phosphate, 0.01 ~ 0.05mol/L sodium sulphate, 10 ~ 30g/L titania powder, 0 ~ 0.05mol/L sodium phosphate.
7. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 5, it is characterized in that, electrolyte solution is containing, for example each component of lower concentration: 0.4 ~ 0.6mol/L sodium aluminate and 0.05 ~ 0.08mol/L potassium dihydrogen phosphate, 0.05 ~ 0.08mol/L sodium sulphate, 2 ~ 10g/L titania powder, 0.05 ~ 0.1mol/L sodium phosphate, 0.03 ~ 0.07mol/L sodium pyrophosphate.
8. a kind of iron oxide doping two-phase titanium deoxid film visible light catalyst preparation method according to claim 5, it is characterized in that, electrolyte solution is containing, for example each component of lower concentration: 0.6 ~ 0.8mol/L sodium aluminate and 0.08 ~ 0.1mol/L potassium dihydrogen phosphate, 0.08 ~ 0.1mol/L sodium sulphate, 30 ~ 60g/L titania powder, 0.1 ~ 0.2mol/L sodium phosphate, 0.07 ~ 0.1mol/L sodium pyrophosphate, 0.1 ~ 0.2mol/L ammonium dihydrogen phosphate (ADP).
9. the iron oxide doping two-phase titanium deoxid film prepared by the method described in Claims 1 to 4, is characterized in that described iron oxide doping two-phase titanium deoxid film is for visible light photocatalytic degradation methylene blue.
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| CN112958107A (en) * | 2021-02-05 | 2021-06-15 | 山东省科学院新材料研究所 | Ozone oxidation catalytic material and preparation method and application thereof |
| CN113399766A (en) * | 2021-06-02 | 2021-09-17 | 贵州大学 | Electrolyte for high-speed steel roll material electrolytic grinding and electrolyte supply system |
| CN113399766B (en) * | 2021-06-02 | 2022-06-14 | 贵州大学 | Test method of electrolyte for high-speed steel roll material electrolytic grinding |
| CN115430429A (en) * | 2022-09-30 | 2022-12-06 | 四川轻化工大学 | Supported efficient ozone oxidation catalytic material and preparation method and application thereof |
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