CN107626318A - A kind of preparation method of the compound cadmium ferrite photochemical catalyst of carbon fiber - Google Patents
A kind of preparation method of the compound cadmium ferrite photochemical catalyst of carbon fiber Download PDFInfo
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- CN107626318A CN107626318A CN201710776185.9A CN201710776185A CN107626318A CN 107626318 A CN107626318 A CN 107626318A CN 201710776185 A CN201710776185 A CN 201710776185A CN 107626318 A CN107626318 A CN 107626318A
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Abstract
The invention discloses a kind of preparation method of the compound cadmium ferrite photochemical catalyst of carbon fiber, belong to the synthesis technical field of composite photocatalyst material.Technical scheme main points are：Lanthanum nitrate hexahydrate and iron nitrate solution are mixed, citric acid solution is added, with after 70 DEG C of heating stirrings to gel state；Natural cotton fiber is impregnated to 3 5h in gel at room temperature, taken out after 90 120 DEG C of dryings；2 4h are calcined in 500 700 DEG C in a nitrogen atmosphere with 15 DEG C/min heating rate and obtain the compound cadmium ferrite photochemical catalyst of carbon fiber.The present invention has prepared the compound cadmium ferrite photochemical catalyst of carbon fiber by way of calcining in a nitrogen atmosphere using natural cotton fiber cheap and easy to get as the raw material of carbon fiber, with raw material is simple and easy to get, easy to operate, high income and it is environment-friendly the advantages of.
Description
Technical field
The invention belongs to the synthesis technical field of composite photocatalyst material, and in particular to a kind of compound cadmium ferrite light of carbon fiber
The preparation method of catalyst.
Background technology
Water pollution problems is one of main Environmental Problems that current mankind faces.Wastewater by photocatalysis technology due to
The advantages that operating condition is gentle, environment-friendly and pollutant removal is thorough, has obtained the widely studied of people.But improve light and urge
The quantum efficiency of agent, the utilization rate of visible ray and effective recovery photochemical catalyst are still the main research of the technology.
The major advantage of carbon fiber is light weight, tensile strength height, while also has high temperature resistant, conduction, heat conduction, density small
Etc. a series of excellent properties.Therefore, carbon fiber acts not only as the bearing load of structural material, can also be in functional material
In play a role, weaving, biology, chemical industry, medical treatment etc. can be widely applied to.
Perovskite composite oxides because with uniqueness physical and chemical performance be extensively studied in solid fuel cell,
The field such as catalyst and gas sensor.Cadmium ferrite（LaFeO3）As a kind of ABO3Type perovskite compound, there is narrower band
Gap（2.36eV）, there is stronger response to visible ray, and with magnetic, the advantage such as be easily recycled, and photocatalysis field by
To the concern of people.
Had the advantage that carbon fiber and cadmium ferrite are compound as photochemical catalyst：First, utilize the excellent extinction of carbon fiber
Performance further increases absorption of the composite to visible ray；Second, the excellent conductive capability of carbon fiber can be utilized to improve ferrous acid
The photogenerated charge separative efficiency of lanthanum；Third, compound effectively can also be dispersed in degraded solutions by carbon fiber as carrier, increase
Add effective contact of photochemical catalyst and degradation solution；Fourth, using the magnetic of cadmium ferrite, photocatalysis can be more effectively recycled
Agent.
The content of the invention
Present invention solves the technical problem that it there is provided the compound cadmium ferrite of carbon fiber that a kind of technique is simple and cost is cheap
The preparation method of photochemical catalyst, this method using natural cotton fiber as raw material, first synthetic fibers shape cadmium ferrite presoma, with
Natural cotton fiber is converted into carbon fiber by way of calcining in a nitrogen atmosphere afterwards, while obtains the compound cadmium ferrite of carbon fiber
Photochemical catalyst.Compared with pure cadmium ferrite, the composite photo-catalyst has more preferable visible light catalytic ability, with graphite in document
The preparation of alkene-cadmium ferrite compound is compared, and this method raw material is cheap and easy to get, and operation is simpler easily-controllable.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of compound cadmium ferrite photochemical catalyst of carbon fiber
Preparation method, it is characterised in that concretely comprise the following steps：（1）By molar concentration be respectively 0.1-0.3mol/L lanthanum nitrate hexahydrate and
Iron nitrate solution is with n（Lanthanum nitrate）：n（Ferric nitrate）=1:1 mixed in molar ratio, adds citric acid solution, wherein citric acid with
The mol ratio of lanthanum nitrate is 1:1-5, with after 70 DEG C of heating stirrings to gel state；（2）Natural cotton fiber is existed at room temperature
3-5h is impregnated in gel, is taken out after 90-120 DEG C of drying；（3）With 1-5 DEG C/min heating rate in a nitrogen atmosphere in
500-700 DEG C of calcining 2-4h obtains the compound cadmium ferrite photochemical catalyst of carbon fiber.
The present invention passes through the side of calcining in a nitrogen atmosphere using natural cotton fiber cheap and easy to get as the raw material of carbon fiber
Formula has prepared the compound cadmium ferrite photochemical catalyst of carbon fiber, has that raw material is simple and easy to get, easy to operate, high income and environment-friendly
The advantages of.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph that the compound cadmium ferrite photochemical catalyst of carbon fiber is made in embodiment 1；
Fig. 2 is the scanning electron microscope (SEM) photograph that the compound cadmium ferrite photochemical catalyst of carbon fiber is made in embodiment 2；
Fig. 3 is the effect curve that the compound cadmium ferrite photocatalyst for degrading 10mg/L active black solution of carbon fiber is made in embodiment 3；
Fig. 4 is the XRD spectrum that the compound cadmium ferrite photochemical catalyst of carbon fiber is made in embodiment 3.
Embodiment
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
By molar concentration be respectively 0.1mol/L lanthanum nitrate hexahydrate and iron nitrate solution with n（Lanthanum nitrate）：n（Ferric nitrate）=1:1
Mixed in molar ratio, add citric acid solution, wherein the mol ratio of citric acid and lanthanum nitrate is 1:1, with after 70 DEG C of heating
Natural cotton fiber is impregnated 3h at room temperature, taken out after 90 DEG C of dryings by stirring to gel state in gel；With 1 DEG C/min
Heating rate in a nitrogen atmosphere in 500 DEG C calcine 4h i.e. obtain the compound cadmium ferrite photochemical catalyst of carbon fiber.
Embodiment 2
By molar concentration be respectively 0.2mol/L lanthanum nitrate hexahydrate and iron nitrate solution with n（Lanthanum nitrate）：n（Ferric nitrate）=1:1
Mixed in molar ratio, add citric acid solution, wherein the mol ratio of citric acid and lanthanum nitrate is 1:3, with after 70 DEG C of heating
Natural cotton fiber is impregnated 4h at room temperature, taken out after 100 DEG C of dryings, with 3 DEG C/min by stirring to gel state in gel
Heating rate in a nitrogen atmosphere in 600 DEG C calcine 3h i.e. obtain the compound cadmium ferrite photochemical catalyst of carbon fiber.
Embodiment 3
By molar concentration be respectively 0.3mol/L lanthanum nitrate hexahydrate and iron nitrate solution with n（Lanthanum nitrate）：n（Ferric nitrate）=1:1
Mixed in molar ratio, add citric acid solution, wherein the mol ratio of citric acid and lanthanum nitrate is 1:5, with after 70 DEG C of heating
Stir to gel state；Natural cotton fiber is impregnated into 5h in gel at room temperature, taken out in 120 DEG C of dryings, with 5 DEG C/min's
Heating rate calcines 2h in 700 DEG C in a nitrogen atmosphere and obtains the compound cadmium ferrite photochemical catalyst of carbon fiber.
Embodiment above describes the general principle of the present invention, main features and advantages, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (1)
1. a kind of preparation method of the compound cadmium ferrite photochemical catalyst of carbon fiber, it is characterised in that concretely comprise the following steps：
（1）By molar concentration be respectively 0.1-0.3mol/L lanthanum nitrate hexahydrate and iron nitrate solution with n（Lanthanum nitrate）：n（Nitric acid
Iron）=1:1 mixed in molar ratio, citric acid solution is added, the wherein mol ratio of citric acid and lanthanum nitrate is 1:1-5, with after
70 DEG C of heating stirrings are to gel state；
（2）Natural cotton fiber is impregnated into 3-5h in gel at room temperature, taken out after 90-120 DEG C of drying；（3）With 1-5 DEG C/
Min heating rate calcines 2-4h in 500-700 DEG C in a nitrogen atmosphere and obtains the compound cadmium ferrite photochemical catalyst of carbon fiber.
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| CN201710776185.9A CN107626318A (en) | 2017-08-31 | 2017-08-31 | A kind of preparation method of the compound cadmium ferrite photochemical catalyst of carbon fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569733A (en) * | 2018-11-30 | 2019-04-05 | 华纺股份有限公司 | A kind of cotton fiber base carbon composite metal oxide/polypyrrole photochemical catalyst and preparation method |
Citations (2)
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|---|---|---|---|---|
| CN102773092A (en) * | 2012-07-10 | 2012-11-14 | 燕山大学 | Nano perovskite/carbon nanotube compound photocatalyst and preparation method thereof |
| CN103263943A (en) * | 2013-05-14 | 2013-08-28 | 中南民族大学 | Preparation method of LaF3O3/SBA-15 and application |
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2017
- 2017-08-31 CN CN201710776185.9A patent/CN107626318A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773092A (en) * | 2012-07-10 | 2012-11-14 | 燕山大学 | Nano perovskite/carbon nanotube compound photocatalyst and preparation method thereof |
| CN103263943A (en) * | 2013-05-14 | 2013-08-28 | 中南民族大学 | Preparation method of LaF3O3/SBA-15 and application |
Non-Patent Citations (2)
| Title |
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| KAIXUAN WANG等: "Immobilizing LaFeO3 nanoparticles on carbon spheres for enhanced heterogeneous photo-Fenton like performance", 《APPLIED SURFACE SCIENCE》 * |
| 赵晓华等: "钙钛矿型复合氧化物镍酸镧光催化性能研究", 《河南师范大学学报(自然科学版)》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569733A (en) * | 2018-11-30 | 2019-04-05 | 华纺股份有限公司 | A kind of cotton fiber base carbon composite metal oxide/polypyrrole photochemical catalyst and preparation method |
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Application publication date: 20180126 |