CN108273528A - A method of preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape - Google Patents
A method of preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape Download PDFInfo
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- CN108273528A CN108273528A CN201810058716.5A CN201810058716A CN108273528A CN 108273528 A CN108273528 A CN 108273528A CN 201810058716 A CN201810058716 A CN 201810058716A CN 108273528 A CN108273528 A CN 108273528A
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- photochemical catalyst
- nano bar
- high iodine
- oxygen bismuth
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- 239000003054 catalyst Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- URVGHPZOLQFKJZ-UHFFFAOYSA-N [Bi]=O.[I] Chemical compound [Bi]=O.[I] URVGHPZOLQFKJZ-UHFFFAOYSA-N 0.000 title claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 57
- 239000000725 suspension Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000013019 agitation Methods 0.000 claims abstract description 10
- 235000019441 ethanol Nutrition 0.000 claims abstract description 5
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims abstract description 5
- BDJYZEWQEALFKK-UHFFFAOYSA-N bismuth;hydrate Chemical compound O.[Bi] BDJYZEWQEALFKK-UHFFFAOYSA-N 0.000 claims abstract description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 125000005909 ethyl alcohol group Chemical group 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 230000003197 catalytic effect Effects 0.000 abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 238000009388 chemical precipitation Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010189 synthetic method Methods 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 15
- 238000007146 photocatalysis Methods 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 229910052797 bismuth Inorganic materials 0.000 description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 241000446313 Lamella Species 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- CJJMLLCUQDSZIZ-UHFFFAOYSA-N oxobismuth Chemical compound [Bi]=O CJJMLLCUQDSZIZ-UHFFFAOYSA-N 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- UOZDOLIXBYLRAC-UHFFFAOYSA-L [2-hydroxy-3-(trimethylazaniumyl)propyl]-trimethylazanium;diiodide Chemical compound [I-].[I-].C[N+](C)(C)CC(O)C[N+](C)(C)C UOZDOLIXBYLRAC-UHFFFAOYSA-L 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- B01J35/23—
-
- B01J35/39—
-
- B01J35/612—
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/802—Visible light
Abstract
The present invention provides a kind of methods preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape, by five nitric hydrate bismuth ultrasonic disperses in ethyl alcohol or water, liquor kalii iodide is added in above-mentioned suspension, magnetic agitation obtains suspension, then the pH of suspension is controlled 11 ~ 14 with sodium hydroxide solution, magnetic agitation is reacted, and Bi is obtained5O7I, products therefrom obtain rodlike Bi through being filtered, washed, drying, dry5O7I.The rodlike Bi that the present invention is prepared under normal temperature and pressure conditions by chemical precipitation method5O7I has pattern uniform, large specific surface area, the strong feature of stability.Effectively photochemical catalytic oxidation the Elemental Mercury in power-plant flue gas can be removed, the lower demercuration efficiency of LED light irradiation can reach 50%, and efficiency is apparently higher than traditional TiO2（17%）Catalysis material.The synthetic method of the present invention is simple, at low cost, pollution is small, meets national sustainable development needs, is a kind of novel environment-friendly preparation method.
Description
Technical field
The invention belongs to materialogy fields, are related to a kind of photochemical catalyst, specifically a kind of to prepare the high iodine of nano bar-shape
The method of oxygen bismuth photochemical catalyst.
Background technology
Environmental pollution and energy shortage are the huge problems that current mankind is faced, and being China or even whole world implementation can hold
Continuous development strategy wants top-priority key subjects.In recent years, photocatalysis air-cleaning technology because its safety, persistently, efficiently
The features such as paid attention to by numerous researchers, clean energy resource production and depollution of environment field have and its wide application before
Scape.At present limitation photocatalysis clean energy resource production and the depollution of environment in terms of extensive use an important factor for be photochemical catalyst can
Photocatalytic activity is low under the conditions of light-exposed, therefore the exploitation of efficient visible light response type semiconductor light-catalyst is photocatalytic process
It is crucial.
In recent years, bismuth based semiconductor material because of its response to visible light there is efficient photocatalytic activity to be increasingly becoming
One of the research hotspot of novel photocatalysis material.Its catalytic activity is apparently higher than traditional TiO2Catalysis material, mainly because
Valence band is taken part in respectively for Bi6s and Bi6p tracks and conduction band is constituted, and to reduce energy gap, has effectively been expanded to visible
The absorption of light.Halogen layer [Xm]n-With bismuth oxygen layer [Bi2O2]2+Between electrostatic interaction can promote photo-generate electron-hole pair
Separation, combined by Van der Waals force by X (X=Cl, Br, I) atom between X (X=Cl, Br, I) atomic layer of dual layer arrangement,
Binding force is smaller.Bi5O7I as one of bismuth based semiconductor material, possess special electronic structure and its in visible light
Under the conditions of the characteristic that can be excited so that Bi5O7This photochemical catalyst with good photocatalytic activity of I causes numerous researchers
Interest.
With Bi5O7I is more and more interested to researchers, and different preparation processes is also being explored, currently used system
Preparation Method mainly has two kinds of preparation methods of hydro-thermal and high temperature thermal decomposition, is both needed to take, consume energy, cause into production cost it is higher, reaction
Process is not easy to control etc., does not meet the needs of current social sustainable development.Therefore, research is a kind of simple for process and with preferable
The Bi of photocatalysis performance5O7The preparation method of I becomes a vital task.
Invention content
For above-mentioned technical problem in the prior art, the present invention provides a kind of high iodine oxygen bismuth light of nano bar-shape for preparing to urge
The method of agent, this method for preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape will solve to prepare stick in the prior art
The Bi of shape5O7The methods of I nano-photocatalysts takes, energy consumption, and it is higher to lead into production cost, the uppity technology of reaction process
Problem.
The present invention provides a kind of methods preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape, include the following steps：
(1) five nitric hydrate bismuths are weighed at room temperature, are dissolved in a solvent, the ultrasound 10~15 under the conditions of 80~100Hz
Minute, five nitric hydrate bismuth suspension are obtained,
(2) potassium iodide is dissolved in deionized water and obtains liquor kalii iodide, liquor kalii iodide is added to five hydration nitre
In sour bismuth suspension, the molar ratio of the five nitric hydrate bismuths and KI are 1~5:1, magnetic agitation reaction；
(3) be added NaOH solution, the NaOH solution concentration be more than 1mol/L, regulating step 2) solution PH be 11
~14, after being then stirred at room temperature 1~3 hour, sediment is collected in centrifugal filtration, is washed respectively with deionized water and absolute ethyl alcohol
It washs at least twice, 6~8h of freeze-day with constant temperature is to get to the rodlike Bi of rod-like nano at 75~85 DEG C5O7I photochemical catalysts.
Further, the solvent in the step (1) is ethyl alcohol or water.
Further, in the step (1), ultrasound 10 minutes under the conditions of 100Hz.
Further, in the step (2), the molar ratio of five nitric hydrate bismuths and KI are 1：1.
Further, in the step (2), volume and the solvent volume ratio in step (1) of deionized water are 1：1.
Further, in the step (3), a concentration of 2mol/L of NaOH solution.
Further, in the step (3), regulating step 2) the pH of solution be 13.
The present invention provides prepare rodlike Bi under a kind of room temperature, condition of normal pressure5O7The method of I, uses bismuth nitrate and potassium iodide
For bismuth source and propiodal, reaction dissolvent is alcohol-water mixed system, only by adjusting the pH of reaction system under normal temperature and pressure conditions
Value, you can obtain rodlike Bi5O7I。
Rodlike Bi5O7I has excellent visible light catalytic performance, higher specific surface area, traditional lamella Bi5O7The ratio table of I
Area is usually in 0.4m2/ g or so, and rodlike Bi prepared by the present invention5O7The specific surface area of I can reach 4.8m2/ g, specific surface area
As many as 12 times are increased, photocatalytic oxidation properties can be substantially improved in larger specific surface area.
Bi prepared by the present invention5O7Club shaped structure is presented in I, and pattern is uniform, and stability is good, large specific surface area, and stability is strong
The characteristics of.Active crystal face compared to traditional lamella pattern, exposure is more, contact of the catalyst with reactant in catalytic process
Active site increases, and greatly enhances its Photocatalytic oxidation activity, and catalytic activity is apparently higher than traditional TiO2Catalysis material.
Rodlike Bi synthesized by the present invention5O7I photochemical catalysts can be used as factory, power plant's smoke evacuation photochemical catalytic oxidation catalyst.
Application example 3 the experimental results showed that, carry simulated flue gas (nitrogen air) element after photo catalysis reactor of element mercury
The content of mercury significantly reduces, and effectively photochemical catalytic oxidation can remove the Elemental Mercury in power-plant flue gas, the lower demercuration effect of LED light irradiation
Rate can reach 50%, it was demonstrated that the rodlike Bi of the invention prepared5O7Stronger photocatalytic oxidation properties, efficiency are bright under visible light by I
It is aobvious to be higher than traditional TiO2(17%) catalysis material.The rodlike Bi that the present invention synthesizes simultaneously5O7I can also be used for other pollutants
Photochemical catalytic oxidation removing.
In addition, the rodlike Bi that the present invention synthesizes5O7The preparation method of I is with photocatalysis performance is good, controllability is strong, environment is dirty
The advantages that small, the reaction time is short, technological process is simple, and cost of material is relatively low is contaminated, is suitable for industrial application, meeting country can
Sustainable development needs.
The present invention is compared with prior art, and technological progress is significant.The present invention can carry out stick under room temperature, normal pressure
Shape Bi5O7The synthesis of I, rodlike Bi obtained5O7I has good photocatalysis performance, reduces rodlike Bi5O7The life of I photochemical catalysts
Produce cost.
Description of the drawings
Fig. 1 is the XRD diagram of 1~3 sample of case study on implementation.
Fig. 2 is that the SEM of 2 sample of case study on implementation schemes.
Fig. 3 is that the SEM of 3 sample of case study on implementation schemes.
Fig. 4 is traditional lamella Bi5O7The SEM of I schemes.
Fig. 5 is 3 sample of case study on implementation and P25 demercuration efficiency figures under simulated flue gas carrier gas.
Specific implementation mode
With reference to embodiment to the detailed description of the invention, so that those skilled in the art more fully understand the present invention, but
The invention is not limited in following case study on implementation.
Embodiment 1
(1) by the Bi (NO of 0.97g3)3·5H2O, which is added to title, to be had in the beaker of 10ml ethyl alcohol, ultrasound 10 under the conditions of 100Hz
Minute, obtain suspending liquid A.
(2) KI of 0.332g is dissolved in the deionized water of 20ml and obtains solution B, solution B is added slowly to
It states in suspending liquid A, after magnetic agitation is reacted 15 minutes, obtains suspension C.
(3) NaOH of 8g is dissolved in 50ml deionized waters to get to the NaOH solution of 4mol/L.
(4) above-mentioned NaOH solution is slowly dropped in the suspension C of magnetic agitation, the pH of suspension C is measured with PH rifles
Stop that NaOH solution is added when being 14, after being then stirred at room temperature 2 hours, sediment is collected in centrifugal filtration, uses deionized water
Freeze-day with constant temperature 8h is respectively washed at 3 times, 80 DEG C with absolute ethyl alcohol to get to rodlike Bi5O7I。
(5) to the rodlike Bi of synthesis5O7I carries out X-ray diffraction analysis (XRD), and the photochemical catalyst synthesized as shown in Figure 1 is
Bi5O7I pure materials.
Embodiment 2
(1) by the Bi (NO of 0.97g3)3·5H2O, which is added to title, to be had in the beaker of 10ml deionized waters, is surpassed under the conditions of 80HZ
Sound 15 minutes, obtains suspending liquid A.
(2) KI of 0.332g is dissolved in the deionized water of 20ml and obtains solution B, solution B is added slowly to
It states in suspending liquid A, after magnetic agitation is reacted 15 minutes, obtains suspension C.
(3) NaOH of 8g is dissolved in 50ml deionized waters to get to the NaOH solution of 4mol/L.
(4) above-mentioned NaOH solution is slowly dropped in the suspension C of magnetic agitation, the pH of suspension C is measured with pH rifles
Stop that NaOH solution is added when being 13, after being then stirred at room temperature 2 hours, sediment is collected in centrifugal filtration, uses deionized water
Freeze-day with constant temperature 8h is respectively washed at 3 times, 80 DEG C with absolute ethyl alcohol to get to rodlike Bi5O7I。
(5) to the rodlike Bi of synthesis5O7I carries out X-ray diffraction analysis (XRD), and the photochemical catalyst synthesized as shown in Figure 1 is
Bi5O7I pure materials.To the rodlike Bi of synthesis5O7I makees scanning electron microscope imaging (SEM), it can be observed from fig. 2 that Bi5O7I shows stick
Shape structure.
Embodiment 3
(1) by the Bi (NO of 0.97g3)3·5H2O, which is added to title, to be had in the beaker of 20ml ethyl alcohol, ultrasound 10 under the conditions of 100HZ
Minute, obtain suspending liquid A.
(2) KI of 0.332g is dissolved in the deionized water of 20ml and obtains solution B, solution B is added slowly to
It states in suspending liquid A, after magnetic agitation is reacted 15 minutes, obtains suspension C.
(3) NaOH of 4g is dissolved in 50ml deionized waters to get to the NaOH solution of 2mol/L.
(4) above-mentioned NaOH solution is slowly dropped in the suspension C of magnetic agitation, the pH of suspension C is measured with pH rifles
Stop that NaOH solution is added when being 13, after being then stirred at room temperature 2 hours, sediment is collected in centrifugal filtration, uses deionized water
Freeze-day with constant temperature 8h is respectively washed at 3 times, 80 DEG C with absolute ethyl alcohol to get to rodlike Bi5O7I。
(5) to the rodlike Bi of synthesis5O7I carries out X-ray diffraction analysis (XRD), and the photochemical catalyst synthesized as seen from Figure 1 is
Bi5O7I pure materials.To the rodlike Bi of synthesis5O7I makees scanning electron microscope imaging (SEM), as seen from Figure 3, Bi5O7I shows stick
Shape structure.
(6) to prepared Bi5O7I nanometer rods have carried out the experiment of visible light catalytic oxidation gas mercury：By 50mg the present embodiment
The rodlike Bi prepared5O7I photochemical catalysts are added photocatalysis performance and evaluate rack, using the LED light of 9W as visible light source.(with 390nm
Optical filter filters λ<The light of 390nm), as shown in Figure 5, after turning on light after, removing of the simple substance gas mercury in the photocatalyst surface
Rate is 50% or so, and catalytic activity is apparently higher than traditional TiO2(17%) catalysis material.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this
Equivalent structure or equivalent flow shift made by description of the invention, is similarly included in other related technical fields
, it should all be included within the scope of the present invention.
Claims (7)
1. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape, it is characterised in that include the following steps：
（1）Five nitric hydrate bismuths are weighed at room temperature, are dissolved in a solvent, and ultrasound 10 ~ 15 minutes, obtain under the conditions of 80 ~ 100Hz
To five nitric hydrate bismuth suspension；
（2）Potassium iodide is dissolved in deionized water and obtains liquor kalii iodide, liquor kalii iodide is added to five nitric hydrate bismuths
In suspension, the molar ratio of the five nitric hydrate bismuths and KI are 1 ~ 5:1, magnetic agitation reaction；
（3）NaOH solution is added, the NaOH solution concentration is more than 1mol/L, regulating step 2）Solution pH be 11 ~ 14,
Then after being stirred at room temperature 1 ~ 3 hour, sediment is collected in centrifugal filtration, is washed respectively at least with deionized water and absolute ethyl alcohol
Twice, at 75 ~ 85 DEG C 6 ~ 8h of freeze-day with constant temperature to get to nano bar-shape Bi5O7I photochemical catalysts.
2. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：Institute
It is ethyl alcohol or water to state the solvent in step (1).
3. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：
In the step (1), ultrasound 10 minutes under the conditions of 100Hz.
4. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：Institute
It states in step (2), the molar ratio of five nitric hydrate bismuths and KI are 1：1.
5. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：Institute
State step（2）In, the volume and step of deionized water（1）In solvent volume ratio be 1：1.
6. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：Institute
State step（3）In, a concentration of 2mol/L of NaOH solution.
7. a kind of method preparing the high iodine oxygen bismuth photochemical catalyst of nano bar-shape according to claim 1, it is characterised in that：Institute
State step（3）In, regulating step 2）Solution pH be 13.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180565A (en) * | 2019-05-15 | 2019-08-30 | 太原理工大学 | A kind of photochemical catalyst Bi5O7The synthetic method and its application of Br |
| CN111167486A (en) * | 2020-03-06 | 2020-05-19 | 六盘水师范学院 | Bi5O7I/MnxZn1-xFe2O4Preparation method of composite magnetic photocatalyst |
| CN111250142A (en) * | 2020-03-31 | 2020-06-09 | 上海电力大学 | Preparation method, product and application of graphite-phase carbon nitride/high-iodine bismuth oxyiodide heterojunction with up-conversion characteristic |
| CN111408176A (en) * | 2020-03-06 | 2020-07-14 | 深圳第三代半导体研究院 | Method and device for purifying multidimensional nano material |
| CN113101952A (en) * | 2021-04-02 | 2021-07-13 | 济南大学 | Bi4O5I2/Bi5O7I composite photocatalyst and preparation method and application thereof |
| CN113101954A (en) * | 2021-04-02 | 2021-07-13 | 济南大学 | Bi5O7I/Bi2MoO6Composite photocatalyst and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110180565A (en) * | 2019-05-15 | 2019-08-30 | 太原理工大学 | A kind of photochemical catalyst Bi5O7The synthetic method and its application of Br |
| CN111167486A (en) * | 2020-03-06 | 2020-05-19 | 六盘水师范学院 | Bi5O7I/MnxZn1-xFe2O4Preparation method of composite magnetic photocatalyst |
| CN111408176A (en) * | 2020-03-06 | 2020-07-14 | 深圳第三代半导体研究院 | Method and device for purifying multidimensional nano material |
| CN111408176B (en) * | 2020-03-06 | 2021-08-17 | 深圳第三代半导体研究院 | Method and device for purifying multidimensional nano material |
| CN111250142A (en) * | 2020-03-31 | 2020-06-09 | 上海电力大学 | Preparation method, product and application of graphite-phase carbon nitride/high-iodine bismuth oxyiodide heterojunction with up-conversion characteristic |
| CN113101952A (en) * | 2021-04-02 | 2021-07-13 | 济南大学 | Bi4O5I2/Bi5O7I composite photocatalyst and preparation method and application thereof |
| CN113101954A (en) * | 2021-04-02 | 2021-07-13 | 济南大学 | Bi5O7I/Bi2MoO6Composite photocatalyst and preparation method and application thereof |
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