CN105056962A - Preparation method of load-type rare earth double perovskite composite oxide photocatalyst and preparation method thereof - Google Patents
Preparation method of load-type rare earth double perovskite composite oxide photocatalyst and preparation method thereof Download PDFInfo
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- CN105056962A CN105056962A CN201510471220.7A CN201510471220A CN105056962A CN 105056962 A CN105056962 A CN 105056962A CN 201510471220 A CN201510471220 A CN 201510471220A CN 105056962 A CN105056962 A CN 105056962A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The present invention provides a preparation method of a load-type rare earth double perovskite photocatalyst capable of degrading phenol in visible light. The catalyst comprising lanthanum, iron, copper, yttrium and oxygen. The method is as below: first preparing a pure rare earth double perovskite sample La2FeCuO6 by using glucose as a complexing agent; then modifying the sample by an impregnation method; and loading yttria into the rare earth double perovskite sample by roasting, so as to obtain double perovskite photocatalyst samples with different load mass fractions. When the load capacity is 7%, the degradation rate reaches 91.60%, and COD removal rate reaches 62.2%; the photocatalytic activity is far higher than that of the unloaded rare earth double perovskite catalyst (photocatalytic activity of unloaded rare double perovskite is 42.50%, and COD removal efficiency is 21.61%). The preparation process of the catalyst is simple and low in cost; and each prepared catalyst has good catalytic activity and stability in visible degradation of phenol.
Description
Technical field
The present invention relates to a kind of preparation method of support type rare earth double-perovskite compound oxide photocatalyst, refer to that a kind of degradation of phenol under visible light has the rare earth loaded type double-perovskite composite photo-catalyst of higher catalytic activity especially.
Background technology
People and hydrobiological health in a large amount of phenol wastewater serious harms of discharging in coal plant and pharmaceutical factory.High-concentration phenolic wastewater makes its cycling and reutilization mainly through physico-chemical process, and the process of the phenol wastewater of low concentration is still a challenge.Phenol is material that is poisonous, that easily cause canceration, and can absorb by skin and enter in organism.0.3g phenolic compound makes people poisoning, if the phenolic compound of normal human's picked-up 1g just can be lethal.Phenol is found in drinking water and some specific material objects, finds recently in the middle of the urine that it also exists with adult and children.Simultaneously phenolic compound is difficult to spontaneous degradation under field conditions (factors) and is decomposed into nonhazardous material, in order to solve the pollution problem of phenol wastewater, finds advanced low cost, high efficiency water technology enjoys popular confidence always.
Photocatalysis oxidation technique is a kind ofly approved there is the green technology of important application prospect in the field such as the energy and environment by vast researcher.It is as a kind of new depollution of environment technology, utilizes sunshine by pollutant exhaustive oxidation, can resolve into carbon dioxide and water, and the green had because of itself, the advantage such as efficient, be subject to people in the last few years and paid close attention to widely.But existing photochemical catalyst limits its utilization rate to solar energy because energy gap is wider, in order to improve utilization rate to solar energy and photocatalysis efficiency, seeking to have response in visible-range, catalyst that catalytic efficiency is high becomes study hotspot.
Most typical semiconductor oxidation photocatalyst is TiO
2, but TiO
2band-gap energy wider (3.2eV), cause it can only absorption portion ultraviolet light (accounting for sunshine about 8%), people be to TiO
2do a lot of modification; Comprise doping, photoactivate, load, be compounded to form hetero-junctions and control the growth etc. of crystal face, except to TiO
2semiconductor light-catalyst carries out outside modification, finds novel photocatalyst and also becomes study hotspot, and common novel photocatalyst mainly contains perovskite composite oxide, precious metals ag series composite oxides as AgSbO
3, Ag
3vO
4, Ag
3pO
4photochemical catalysts etc., Ti series composite oxides are as K
2ti
2o
5and Na
2ti
3o
7deng photochemical catalyst, Bi series composite oxides are as BiSbO
4, Bi
2wO
6, BiVO
4deng photochemical catalyst.The features such as wherein perovskite composite oxide is with its Stability Analysis of Structures, the structure that conversion is abundant become study hotspot.
Perovskite composite oxide mainly comprises two classes, and a class is that (general formula is expressed as ABO to individual layer perovskite composite oxide
3), it is another kind of that for Double Perovskite type composite oxides, (general formula is expressed as A
2b ' B " O
6).But in current bibliographical information, be almost individual layer ABO entirely
3ca-Ti ore type combined oxidation compound as photochemical catalyst, and is more common in the Photocatalytic Decoloration process of dyestuff.And Double Perovskite compound is compared to individual layer perovskite compound, the regulation and control space of more abundant conversion combination and effect each other can be provided, thus likely overcomes individual layer ABO
3type perovskite photochemical catalyst and TiO
2deficiency, improve photochemical catalyst activity under visible light.
In current research, the report of research double-perovskite photocatalysis performance is more rare both at home and abroad, and especially support type rare earth double-perovskite composite oxides have not been reported for the research of phenol wastewater of degrading under visible ray.Therefore this patent provides a kind of preparation method of support type rare earth double-perovskite compound oxide photocatalyst, for degradation of phenol under visible ray, and finds that it has higher photocatalytic activity.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of support type rare earth double-perovskite compound oxide photocatalyst, first complexing agent is made with glucose, will containing A, B ', B " the nitrate solution complexing of atom; utilize sol-gal process to prepare rare earth double-perovskite material; then adopt infusion process prepare support type rare earth double-perovskite compound oxide photocatalyst; by this catalyst application in the light-catalyzed reaction of Visible Light Induced Photocatalytic phenol wastewater, find that it has higher photocatalytic activity.
The preparation method of catalyst of the present invention is that ferric nitrate, copper nitrate is metal ion source, and glucose is that pure phase rare earth double-perovskite sample prepared by complexing agent first with lanthanum nitrate.Specific features is: the mol ratio of glucose and metal ion mole summation is 2: 1, takes the La (NO of certain metering ratio
3)
36H
2o, Fe (NO
3)
39H
2o, Cu (NO
3)
23H
2o and glucose are dissolved in 200ml distilled water, at room temperature stir into mixed transparent solution, then stir in 70 DEG C of waters bath with thermostatic control, obtain clear viscous shape colloid after 6 hours.Gained colloid is obtained xerogel in dry 24 hours under 100 DEG C of constant temperature oven air atmospheres, then in Muffle furnace, under air atmosphere, 500 DEG C of roastings obtain the former powder of oxide in 3 hours, the more former powder of oxide 700 DEG C of roastings, the 3 hours obtained pure phase rare earth double-perovskite sample La in air atmosphere that will obtain
2feCuO
6.
Then by infusion process to above-mentioned rare earth double-perovskite sample La
2feCuO
6carry out modifying thus prepare support type rare earth double-perovskite compound oxide photocatalyst, final catalyst is Y
2o
3(X%)/La
2feCuO
6, wherein X% is Y
2o
3account for La
2feCuO
6mass fraction.Specific features is: take a certain amount of Y (NO
3)
36H
2o is dissolved in certain distilled water, under stirring well, a certain amount of rare earth double-perovskite powder is added after dissolving completely, stir and slowly add a certain amount of ammonia spirit after 1 hour, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, in Muffle furnace, roasting 3 hours at 350 DEG C, can obtain support type rare earth double-perovskite compound oxide photocatalyst.Chemical analysis is utilized to determine the mol ratio of each metallic atom in the catalyst of generation, consistent with the initial rate of charge of various metal nitrate.
Catalyst of the present invention under visible light degradation of phenol obtains good catalytic effect.Test and carry out the photocatalytic activity of evaluate catalysts by Photocatalytic Degradation of Phenol under visible light illumination.Specific experiment operates: photocatalysis is reactor used is SGY-I multifunctional reactor.Under magnetic stirring, the photochemical catalyst of 0.2500g is scattered in the phenol solution of 20mg/l, ensures to pass into enough air in whole course of reaction.In course of reaction, in order to ensure that catalyst reaches adsorption/desorption balance, first dark reaction half an hour, and then source of opening the light, light source is the halogen lamp of 300W, illumination 5 hours, and in During Illumination, per half an hour gets a sample.By the sample centrifugation obtained, finally analyze with UV-7504PC ultraviolet specrophotometer.In whole course of reaction, a straight-through condensed water, controls reaction temperature in room temperature.The degradation rate formula of phenol: D=(A
0-A
t)/A
0× 100% calculates, wherein, and A
0the absorbance of phenol solution after expression dark reaction, A
trepresent the absorbance of the phenol of a certain moment reaction solution.In addition, the Empyrean type x-ray diffractometer (XRD) adopting Dutch PANalytical company to produce tests the thing phase composition of catalyst, and this instrument parameter is as follows: radiation source is CuK
α(λ=0.1542nm), sweep limits is 10 ° ~ 80 °, and sweep speed is 1 °/min.Prepared catalyst XRD tests display, and the angle of diffraction 23 °, 32 °, 40 °, 46 °, 58 °, 68 ° occur diffraction maximum, and these diffraction maximums are characteristic diffraction peaks of perovskite, show to have synthesized support type double-perovskite catalyst.
Advantage of the present invention is: the support type rare earth double-perovskite catalyst prepared, under simulated visible light, degradation of phenol has higher catalytic activity, stability and structural stability.And method for preparing catalyst is simple, with low cost, the intermediate product loss of preparation process is little.
Essential characteristics of the present invention is:
1. adopt support type rare earth double-perovskite composite photo-catalyst prepared by glucose sol-gal process cooperation infusion process, for phenol reactant of degrading under visible ray, its degradation rate is up to 91.60%, COD clearance is 62.23%, its photocatalytic activity is higher than the double-perovskite catalyst (the double-perovskite photocatalytic activity of non-load is 42.50%, COD clearance is 21.61%) of non-load.
2. the support type rare earth double-perovskite composite photo-catalyst prepared by, is be carried on double-perovskite by simple rare earth oxide, thus defines heterojunction structure therebetween, thus widened the response range of double-perovskite catalyst to light.
Accompanying drawing explanation
Fig. 1 is (1) La
2feCuO
6double-perovskite catalyst; (2) Y
2o
3(5%)/La
2feCuO
6loaded photocatalyst; (3) Y
2o
3(8%)/La
2feCuO
6loaded photocatalyst; (4) Y
2o
3(6%)/La
2feCuO
6loaded photocatalyst; (5) Y
2o
3(7%)/La
2feCuO
6the photocatalytic activity collection of illustrative plates of loaded photocatalyst degradation of phenol under visible light.
Fig. 2 is (1) La
2feCuO
6double-perovskite catalyst; (2) Y
2o
3(8%)/La
2feCuO
6loaded photocatalyst; (3) Y
2o
3(7%)/La
2feCuO
6loaded photocatalyst; (4) Y
2o
3(6%)/La
2feCuO
6loaded photocatalyst; (5) Y
2o
3(5%)/La
2feCuO
6the X ray diffracting spectrum of loaded photocatalyst.
Table 1 is different catalysts at the catalytic activity data of degradation of phenol under visible light and COD clearance
Detailed description of the invention
Embodiment 1: by 8.6604gLa (NO
3)
36H
2o, 4.0400gFe (NO
3)
39H
2o, 2.4160gCu (NO
3)
23H
2o, 15.8536g glucose is dissolved in 200ml distilled water, at room temperature stirs into mixed transparent solution, and at room temperature ultrasonic wave process 30 minutes, then transfer them in 70 DEG C of waters bath with thermostatic control and add thermal agitation, after 6 hours, obtain clear viscous shape colloid.By gained colloid under 100 DEG C of constant temperature oven air atmospheres dry 24 hours, then in Muffle furnace 500 DEG C of roastings 3 hours the former powder of oxide, by the former powder of oxide that obtains 700 DEG C of roastings, 3 hours obtained pure phase rare earth double-perovskite La in air atmosphere again
2feCuO
6sample.
Comparative example 1: take 0.1696gY (NO
3)
36H
2o is dissolved in the distilled water of 30ml, adds 1gLa after dissolving completely under stirring well
2feCuO
6double-perovskite sample powder, the ammonia spirit that 2ml mass fraction is 25% is slowly added after stirring 1h, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, roasting 3h at 350 DEG C in Muffle furnace, can obtain support type rare earth double-perovskite composite photo-catalyst Y
2o
3(5%)/La
2feCuO
6.
Comparative example 2: take 0.2035gY (NO
3)
36H
2o is dissolved in the distilled water of 30ml, adds 1gLa after dissolving completely under stirring well
2feCuO
6double-perovskite sample powder, the ammonia spirit that 2ml mass fraction is 25% is slowly added after stirring 1h, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, roasting 3h at 350 DEG C in Muffle furnace, can obtain support type rare earth double-perovskite composite photo-catalyst Y
2o
3(6%)/La
2feCuO
6.
Comparative example 3: take 0.2375gY (NO
3)
36H
2o is dissolved in the distilled water of 30ml, adds 1gLa after dissolving completely under stirring well
2feCuO
6double-perovskite sample powder, the ammonia spirit that 2ml mass fraction is 25% is slowly added after stirring 1h, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, roasting 3h at 350 DEG C in Muffle furnace, can obtain support type rare earth double-perovskite composite photo-catalyst Y
2o
3(7%)/La
2feCuO
6.
Comparative example 4: take 0.2714gY (NO
3)
36H
2o is dissolved in the distilled water of 30ml, adds 1gLa after dissolving completely under stirring well
2feCuO
6double-perovskite sample powder, the ammonia spirit that 2ml mass fraction is 25% is slowly added after stirring 1h, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, roasting 3h at 350 DEG C in Muffle furnace, can obtain support type rare earth double-perovskite composite photo-catalyst Y
2o
3(8%)/La
2feCuO
6.
Obtained catalyst carries out the test of catalytic activity according to the methods below:
Example 1 and comparative example 1 respectively, comparative example 2, comparative example 3, catalyst 0.2500g obtained in comparative example 4 is placed in the reactor containing 250ml phenol solution (concentration is 20mg/L), first under dark reaction condition, stir half an hour, catalyst surface phenol molecule is made to reach adsorption desorption balance, turn on light after sampling (about 10mL), until light stability after 5 minutes, every timing sampling half an hour, the total light application time of visible ray is 5 hours, after reaction terminates, solution centrifugal be separated 20min (5000r/min) and get supernatant liquor, then the absorbance of filtrate at phenol maximum absorption wavelength (270nm) place and uv-visible absorption spectra is surveyed with UV-7504PC type ultraviolet-visible spectrophotometer, record and calculate the degradation rate of phenol under the different light time.
Claims (1)
1. a preparation method for support type rare earth double-perovskite compound oxide photocatalyst, this catalyst adopts sol-gal process preparation, it is characterized in that, takes 8.6604gLa (NO
3)
36H
2o, 4.0400gFe (NO
3)
39H
2o, 2.4160gCu (NO
3)
23H
2o, 15.8536g glucose is dissolved in 200ml distilled water, mixed solution is at room temperature stirred into clear solution, then at room temperature ultrasonic wave process 30 minutes, then transfer them in 70 DEG C of waters bath with thermostatic control and add thermal agitation, clear viscous shape colloid is obtained after 6 hours, by gained colloid under 100 DEG C of constant temperature oven air atmospheres dry 24 hours, then in Muffle furnace under air atmosphere 500 DEG C of roastings 3 hours the former powder of oxide, by the former powder of oxide that obtains 700 DEG C of roastings, 3 hours obtained pure phase rare earth double-perovskite La in air atmosphere again
2feCuO
6sample, then takes 0.2375gY (NO
3)
36H
2o is dissolved in the distilled water of 30ml, slowly adds 1gLa after dissolving completely under stirring well
2feCuO
6rare earth double-perovskite sample powder, stir and slowly add the ammonia spirit that 2ml mass fraction is 25% after 1 hour, stirring is continued 1 hour in 70 DEG C of water-baths, then 100 DEG C of constant temperature ovens are put into dry 3 hours, in Muffle furnace, roasting 3 hours at 350 DEG C under air atmosphere, can obtain support type rare earth double-perovskite composite photo-catalyst Y
2o
3(7%)/La
2feCuO
6(7% is Y
2o
3account for La
2feCuO
6mass fraction), Low Concentration Phenol of being degraded under visible ray by this catalyst application reacts the catalytic activity had.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475105A (en) * | 2016-08-26 | 2017-03-08 | 西安交通大学 | A kind of double-perovskite type O composite metallic oxide catalyst and preparation method and application |
| CN107376964A (en) * | 2017-07-21 | 2017-11-24 | 湘潭大学 | A kind of composite photo-catalyst using adulterated with Ca and Ti ore as carrier prepares and its application |
| CN108126691A (en) * | 2017-12-28 | 2018-06-08 | 沈阳师范大学 | A kind of lanthanum based perovskite catalysts material of macroporous structure and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091056A (en) * | 1993-02-18 | 1994-08-24 | 中国科学院大连化学物理研究所 | Catalyst for preparing hydrocarbon with higher molecular weight from methane |
| JP2004010682A (en) * | 2002-06-04 | 2004-01-15 | National Institute Of Advanced Industrial & Technology | Photocatalytic composite material for building material |
| CN103936097A (en) * | 2014-04-11 | 2014-07-23 | 华南理工大学 | Method for degrading methyl orange by use of perovskite/polysaccharide composite photocatalyst |
-
2015
- 2015-08-05 CN CN201510471220.7A patent/CN105056962B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091056A (en) * | 1993-02-18 | 1994-08-24 | 中国科学院大连化学物理研究所 | Catalyst for preparing hydrocarbon with higher molecular weight from methane |
| JP2004010682A (en) * | 2002-06-04 | 2004-01-15 | National Institute Of Advanced Industrial & Technology | Photocatalytic composite material for building material |
| CN103936097A (en) * | 2014-04-11 | 2014-07-23 | 华南理工大学 | Method for degrading methyl orange by use of perovskite/polysaccharide composite photocatalyst |
Non-Patent Citations (4)
| Title |
|---|
| 傅希贤 等: "钙钛矿型LaFe1-xCuxO3的光催化活性研究", 《高等学校化学学报》 * |
| 李伶聪 等: "掺杂型烧绿石La2Sn1.7Co0.3O7-δ逆负载CeO2催化剂的甲烷催化燃烧性能", 《高等学校化学学报》 * |
| 费海霞: "稀土双钙钛矿钴系催化剂的制备及其光催化降解苯酚性能研究", 《万方数据知识服务平台》 * |
| 陈婷 等: "钙钛矿型光催化剂的合成、改性掺杂与负载技术的研究进展", 《化学工程师》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475105A (en) * | 2016-08-26 | 2017-03-08 | 西安交通大学 | A kind of double-perovskite type O composite metallic oxide catalyst and preparation method and application |
| CN106475105B (en) * | 2016-08-26 | 2019-02-05 | 西安交通大学 | A kind of double-perovskite type O composite metallic oxide catalyst and the preparation method and application thereof |
| CN107376964A (en) * | 2017-07-21 | 2017-11-24 | 湘潭大学 | A kind of composite photo-catalyst using adulterated with Ca and Ti ore as carrier prepares and its application |
| CN107376964B (en) * | 2017-07-21 | 2020-07-14 | 湘潭大学 | Preparation and application of composite photocatalyst with doped perovskite as carrier |
| CN108126691A (en) * | 2017-12-28 | 2018-06-08 | 沈阳师范大学 | A kind of lanthanum based perovskite catalysts material of macroporous structure and its preparation method and application |
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