CN107029734A - A kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity - Google Patents
A kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity Download PDFInfo
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- CN107029734A CN107029734A CN201710325221.XA CN201710325221A CN107029734A CN 107029734 A CN107029734 A CN 107029734A CN 201710325221 A CN201710325221 A CN 201710325221A CN 107029734 A CN107029734 A CN 107029734A
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- Prior art keywords
- graphene oxide
- bismuth ferrite
- composite material
- photocatalytic activity
- oxide composite
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 25
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 20
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 14
- 229910000859 α-Fe Inorganic materials 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 5
- 230000010358 mechanical oscillation Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 11
- 239000001045 blue dye Substances 0.000 description 9
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 8
- 229960000907 methylthioninium chloride Drugs 0.000 description 8
- 238000007146 photocatalysis Methods 0.000 description 7
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- MCPLVIGCWWTHFH-UHFFFAOYSA-L methyl blue Chemical compound [Na+].[Na+].C1=CC(S(=O)(=O)[O-])=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)C=C1 MCPLVIGCWWTHFH-UHFFFAOYSA-L 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—Bismuth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity, comprise the following steps：Step 1）Light-catalyzed reaction thing and bismuth ferrite graphene oxide composite material are placed in transparent vessel, the transparent vessel is placed in ultrasonic machine, the bottom of ultrasonic machine is connected with circulating water；Step 2）Light source is opened to carry out opening ultrasonic machine generation ultrasonic vibration in light-catalyzed reaction, course of reaction.Because bismuth ferrite is a kind of ferroelectric material, with piezo-electric effect, under mechanical oscillation effect, positive and negative electric charge occurs in surface, under periodic ultrasonic irradiation, and built in field can replace, so that continual separation electron hole pair, so as to improve photocatalytic activity.
Description
Technical field
The present invention relates to a kind of method for improving bismuth ferrite-graphene oxide composite material photocatalytic activity.
Background technology
With increasingly developing rapidly for society and sharply increasing for the size of population, pollution problem and the energy are hidden weary problem day
Become serious, environmental problem turns into the significant problem for threatening human survival, the appearance of photocatalysis technology make it that this is urgently to be resolved hurrily
Problem dawn, photocatalysis technology is to absorb sunshine using light responsive material to produce electron-hole pair, thus with the external world
Produce oxidation-reduction reaction technology, photocatalysis technology be from the 70's of 20th century progressively grow up in the energy and ring
There is the green technology of important application prospect in border field, and it is anti-that the technology can make the organic pollution in environment occur oxidation Decomposition
Should, finally it is degraded to CO2, the small-molecule substance such as water and inorganic ions, non-secondary pollution, palliating degradation degree are high, it is considered to be at present
Most promising pollution treatment method.Photocatalysis technology is right as a kind of environmentally friendly depollution of environment technology efficiently, safe
The improvement of IAQ has obtained the accreditation of international academic community, and photocatalysis technology is had been widely used in inorganic pollution waste water
In terms of processing, the processing of organic compound, the purification of antimicrobial treatment and air, therefore how to improve photocatalytic activity and turn into
The focal issue of people's growing interest.
At present, influence of the ferroelectric material to photocatalytic activity gradually obtains the spontaneous pole inside everybody concern, ferroelectric material
Change can pull open photo-generate electron-hole pair, so as to reduce its recombination probability, and then improve photocatalytic activity, but static built-in electricity
It is easy to because electrostatic screen causes free carrier to be saturated, this reduces the separation rate of carrier, and it is single
Ferroelectric material is bad for the effect for improving photocatalytic activity.For this problem, the present invention propose it is a kind of improve bismuth ferrite-
The method of graphene composite material photocatalytic activity.
The content of the invention
The method of the present invention for improving bismuth ferrite-graphene oxide composite material photocatalytic activity, including following step
Suddenly：
Step 1）Light-catalyzed reaction thing and bismuth ferrite-graphene oxide composite material are placed in transparent vessel, the transparent appearance
Device is placed in ultrasonic machine, and the bottom of ultrasonic machine is connected with circulating water；
Step 2）Light source is opened to carry out opening ultrasonic machine generation ultrasonic vibration in light-catalyzed reaction, course of reaction.
Because bismuth ferrite is a kind of ferroelectric material, with piezo-electric effect, under mechanical oscillation effect, surface occur just,
Negative electrical charge, under periodic ultrasonic irradiation, built in field can replace, so that continual separation electron hole pair, so as to carry
Highlight catalytic active.
Usefulness of the present invention is：
1）Bismuth ferrate nano cube has piezo-electric effect with the bismuth ferrate nano cube in three-dimensional graphene oxide compound, so
The mechanical oscillation that ultrasonic machine is produced can change the polarization of bismuth ferrate nano cube and three-dimensional graphene oxide inside compounds,
Under periodic ultrasonic irradiation, built in field can replace, so that continual separation electron hole pair, so as to improve photocatalysis work
Property.
2）Three-dimensional graphene oxide can efficiently separate electron hole pair as good transport agent, prevent photo-generated carrier
Be transferred to it is compound during bismuth ferrate nano cube and three-dimensional graphene oxide composite surface, with bismuth ferrate nano cube
Piezo-electric effect synergy under, catalytic activity is very good.
3）This method is easy to operation, high efficient and reliable.
Brief description of the drawings
Fig. 1 is schematic device used in the present invention, 1, ultrasonic machine in figure, 2, drainpipe, 3, circulating water, 4, methylene
Blue dyestuff, 5, beaker, 6, incandescent lamp, 7, bismuth ferrate nano cube and three-dimensional graphene oxide compound, 8, water inlet pipe, 9, the fire hose
Head.
Fig. 2 is three groups of methylene blue dye degradation rate comparison diagrams.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Referring to the drawings.The mechanical regulation device that the method for the present invention of embodiment 1 is built is by ultrasonic machine 1, drainpipe
2nd, circulating water 3, methylene blue dye 4, beaker 5, incandescent lamp 6, bismuth ferrate nano cube and three-dimensional graphene oxide compound 7,
What water inlet pipe 8, tap 9 were constituted, methyl blue dye 4 is housed in beaker 5, bismuth ferrate nano is added in methyl blue dye 4 and is stood
Side and three-dimensional graphene oxide compound 7, beaker 5 are placed in ultrasonic machine 1, tap 9 is arranged on the left side of ultrasonic machine 1, enters
The one end of water pipe 8 is connected with tap 9, and one end is put into the bottom of ultrasonic machine 1, and the bottom of ultrasonic machine 1 is connected with circulating water 3, soaks beaker 5
In circulating water 3, drainpipe 2 is arranged on the bottom right side of ultrasonic machine 1, and incandescent lamp 6 is arranged on the top of ultrasonic machine 1, and ultrasonic machine 1 is produced
Raw ultrasonic vibration, changes bismuth ferrate nano cube and the polarization inside three-dimensional graphene oxide compound 7, in periodic ultrasound
Under irradiation, built in field can replace, so that continual separation electron hole pair, so as to improve photocatalytic activity.
Described mechanical regulation device operationally, methylene blue dye 4 is added first in beaker 5, iron is then added
Sour bismuth nano cubic and three-dimensional grapheme compound 7, beaker 5 is placed in ultrasonic machine 1, opens incandescent lamp 6, opens tap 9,
Ultrasonic motor spindle is connected with circulating water 3, and circulating water 3 contributes to the radiating of reaction unit, the temperature of reaction unit is maintained at room temperature,
Ultrasonic machine 1 is finally opened, cycle ultrasonic vibration is produced, bismuth ferrate nano cube is with three-dimensional graphene oxide compound 7 by power
Effect, internal polarization changes, and built in field can replace, and observes catalytic reaction phenomenon, record methylene blue dye 4
Fading rate.
Bismuth ferrate nano cube in embodiment 1 is changed to single material by embodiment 2 with three-dimensional graphene oxide compound 7
Expect bismuth ferrate nano cube, other operating process are consistent with embodiment 1, observe catalytic reaction phenomenon, record methylene blue dye 4
Fading rate.
Embodiment 3 does not apply ultrasonic vibration, other operating process and embodiment 1 one in experimentation to catalytic reaction
Cause, observe catalytic reaction phenomenon, record the fading rate of methylene blue dye 4.
As can be seen from the results under visible light illumination, when applying mechanical oscillation to composite, that is, it is exactly to compound
Material carries out machinery-photocatalysis, it has been found that only 80min methylene blue dyes are just all degraded.Catalytic performance compares other
Contrast groups are very excellent.
Content described in this specification embodiment is only enumerating to the way of realization of invention conception, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (1)
1. a kind of method for improving bismuth ferrite-graphene oxide composite material photocatalytic activity, it is characterised in that including following step
Suddenly：
Step 1）Light-catalyzed reaction thing and bismuth ferrite-graphene oxide composite material are placed in transparent vessel, the transparent appearance
Device is placed in ultrasonic machine, and the bottom of ultrasonic machine is connected with circulating water；
Step 2）Light source is opened to carry out opening ultrasonic machine generation ultrasonic vibration in light-catalyzed reaction, course of reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325221.XA CN107029734A (en) | 2017-05-10 | 2017-05-10 | A kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325221.XA CN107029734A (en) | 2017-05-10 | 2017-05-10 | A kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity |
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| Publication Number | Publication Date |
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| CN107029734A true CN107029734A (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710325221.XA Pending CN107029734A (en) | 2017-05-10 | 2017-05-10 | A kind of method for improving bismuth ferrite graphene oxide composite material photocatalytic activity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904050A (en) * | 2019-03-13 | 2019-06-18 | 中山大学 | A kind of device architecture and its preparation method and application of ferroelectric material polarization field regulation two-dimensional atomic crystal Flied emission |
| CN110137314A (en) * | 2019-04-22 | 2019-08-16 | 西安电子科技大学 | UV LED and preparation method based on iron electric polarization effect |
Citations (3)
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|---|---|---|---|---|
| CN102626634A (en) * | 2012-03-30 | 2012-08-08 | 南京理工大学 | Bismuth ferrite-graphene compounding magnetism visible light catalyst, as well as preparation method and application of same |
| CN102941103A (en) * | 2012-09-24 | 2013-02-27 | 清华大学 | Bismuth ferrite-graphene nanometer composite material for the filed of photocatalysis and preparation method thereof |
| CN106475083A (en) * | 2016-09-08 | 2017-03-08 | 东北大学秦皇岛分校 | The preparation method of graphene oxide/optically catalytic TiO 2 composite material precursor |
-
2017
- 2017-05-10 CN CN201710325221.XA patent/CN107029734A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626634A (en) * | 2012-03-30 | 2012-08-08 | 南京理工大学 | Bismuth ferrite-graphene compounding magnetism visible light catalyst, as well as preparation method and application of same |
| CN102941103A (en) * | 2012-09-24 | 2013-02-27 | 清华大学 | Bismuth ferrite-graphene nanometer composite material for the filed of photocatalysis and preparation method thereof |
| CN106475083A (en) * | 2016-09-08 | 2017-03-08 | 东北大学秦皇岛分校 | The preparation method of graphene oxide/optically catalytic TiO 2 composite material precursor |
Non-Patent Citations (1)
| Title |
|---|
| 武峥: "铁酸盐多铁材料光伏及催化性能研究", 《中国博士学位论文全文数据库工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904050A (en) * | 2019-03-13 | 2019-06-18 | 中山大学 | A kind of device architecture and its preparation method and application of ferroelectric material polarization field regulation two-dimensional atomic crystal Flied emission |
| CN110137314A (en) * | 2019-04-22 | 2019-08-16 | 西安电子科技大学 | UV LED and preparation method based on iron electric polarization effect |
| CN110137314B (en) * | 2019-04-22 | 2020-08-04 | 西安电子科技大学 | Ultraviolet light-emitting diode based on ferroelectric polarization effect and preparation method thereof |
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Application publication date: 20170811 |
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