CN105879855B - A kind of graphene-γ-bismuth molybdate nanocomposite and its preparation method and application - Google Patents
A kind of graphene-γ-bismuth molybdate nanocomposite and its preparation method and application Download PDFInfo
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- 239000002114 nanocomposite Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 17
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 17
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 17
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 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 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 10
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- DKUYEPUUXLQPPX-UHFFFAOYSA-N dibismuth;molybdenum;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mo].[Mo].[Bi+3].[Bi+3] DKUYEPUUXLQPPX-UHFFFAOYSA-N 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- XWNOTOKFKBDMAP-UHFFFAOYSA-N [Bi].[N+](=O)(O)[O-] Chemical compound [Bi].[N+](=O)(O)[O-] XWNOTOKFKBDMAP-UHFFFAOYSA-N 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 13
- 238000007146 photocatalysis Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 238000001914 filtration Methods 0.000 description 7
- 235000012054 meals Nutrition 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229910002900 Bi2MoO6 Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- FSAJRXGMUISOIW-UHFFFAOYSA-N bismuth sodium Chemical compound [Na].[Bi] FSAJRXGMUISOIW-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/31—Chromium, molybdenum or tungsten combined with 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
-
- B01J35/39—
-
- B01J35/613—
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of graphene-γ-bismuth molybdate nanocomposite preparation methods, comprising the following steps: 1) by graphene, bismuth nitrate and ethylene glycol solvent thermal reaction together using filter, washing, dry to obtain graphene-ethylene glycol bismuth compound；2) gained compound is dispersed in sodium molybdate aqueous solution, the pH value for adjusting acquired solution system is 0-3, then carries out hydro-thermal reaction, using filter, washing, dries to obtain graphene-γ-bismuth molybdate nanocomposite.The present invention is with graphene, bismuth nitrate, sodium molybdate, ethylene glycol is primary raw material, it is combined using solvent-thermal method and hydro-thermal method and prepares graphene-γ-bismuth molybdate nanocomposite, the preparation process equipment that this law is related to is simple, reaction condition is mild, energy consumption is small, new technology, the nanocomposite large specific surface area of preparation, it is seen that light photocatalysis performance is excellent.
Description
Technical field
The invention belongs to environmental friendly material fields, and in particular to a kind of graphene-γ-bismuth molybdate nanocomposite and its
Preparation method and application.
Background technique
The seriousness of environmental pollution, it has also become one directly threatens human survival, the focal issue of urgent need to resolve.Photocatalysis
A branch of the technology as Green Chemistry, the technology can make the organic pollutant in environment that oxidative decomposition occur, finally
It is degraded to CO2, the small-molecule substances such as water and inorganic ions, it is without secondary pollution, palliating degradation degree is high, it is considered to be most promising dirt
Contaminate processing method.But traditional TiO2Photochemical catalyst, band gap is wide, mainly absorbs ultraviolet light, can only utilize ultraviolet in sunlight
Light is low to the utilization rate of sunlight.Exploitation can be abundant as high catalytic activity, energy using the nanometer new material of visible light photocatalysis
It is one of the method for controlling environmental pollution most prospect using the photochemical catalyst of sunlight.Therefore exploitation design is new and effective, steady
Fixed and visible light-responded semiconductor light-catalyst is the hot spot of current photocatalysis research.
Nanometer γ-bismuth molybdate (Bi2MoO6) be rose in recent years, a kind of visible photosemiconductor of degree of receiving significant attention urges
Agent, it has good photocatalytic activity under visible light, the environmental organic pollutant that can be used for degrading, photocatalysis oxygen and light
Catalysis reduction carbon dioxide etc..But its major defect be bismuth based semiconductor photochemical catalyst exist photo-generate electron-hole be easy again
In conjunction with significantly limiting the large-scale application of bismuth series photocatalyst.Therefore, it is necessary to take certain measure to improve photoproduction electricity
Sub- transport efficiency, effectively limit electron hole in conjunction with.Graphene is a kind of efficient electron acceptor material, with γ-molybdic acid
Bismuth (Bi2MoO6) semiconductors coupling be conducive to improve illumination under electron-hole separative efficiency, reduce electron hole in conjunction with, from
And the photocatalytic activity of composite material is improved, therefore graphene-γ-bismuth molybdate nanocomposite has than simple nanometer γ-
The higher photocatalysis efficiency of bismuth molybdate.Develop a kind of graphene-γ-bismuth molybdate nanocomposite preparation side of simple process
Method is of great significance.
Summary of the invention
The object of the present invention is to provide a kind of graphene-γ-bismuth molybdate nanocomposite and preparation method thereof, this method
The process equipment being related to is simple, reaction condition is mild, energy consumption is small, and graphene-γ-bismuth molybdate nanocomposite of preparation compares table
Area is big, it is seen that light photocatalysis performance is excellent.
To achieve the above object, a kind of the technical solution adopted by the present invention are as follows: nano combined material of graphene-γ-bismuth molybdate
The preparation method of material, comprising the following steps: 1) by graphene, bismuth nitrate and ethylene glycol solvent thermal reaction together, using filtering, wash
It washs, dry to obtain graphene-ethylene glycol bismuth compound；2) gained compound is dispersed in sodium molybdate aqueous solution, adjusts institute
Solution system pH value be 0-3, then carry out hydro-thermal reaction, using filter, washing, dry graphene-γ-bismuth molybdate is received
Nano composite material.
According to the above scheme, the graphene is the 0.5-5% of bismuth nitrate quality.
According to the above scheme, concentration of the bismuth nitrate in ethylene glycol is 10-100g/L.
According to the above scheme, the solvent thermal reaction condition are as follows: be heated to 160-180 DEG C of insulation reaction 2-24 hours, then
Cooled to room temperature.
According to the above scheme, the sodium molybdate and graphene-ethylene glycol bismuth compound quality are (0.35-0.5): 1.
According to the above scheme, the concentration of the sodium molybdate aqueous solution is 20-100g/L.
According to the above scheme, the hydrothermal reaction condition is to be heated to 150-200 DEG C of insulation reaction 1-24 hours.
According to the above scheme, the step 1) drying temperature is 80-100 DEG C；Step 2) the drying temperature is 80-120 DEG C.
Graphene-γ made from preparation method described above-bismuth molybdate nanocomposite is nanometer wafer-like, brilliant
Piece is with a thickness of 10-40nm, specific surface area 30-60m2/g。
Graphene-the γ-application of the bismuth molybdate nanocomposite as catalysis material.
Mechanism of the invention: since graphene has single layer two-dimensional structure, high conductivity, excellent electron mobility and pole
The characteristics such as high specific surface area allow to construct semiconductor-graphene hetero-junctions to enhance visible light catalysis activity.Load
Graphene is conducive to the transfer and storage of electronics, and can effectively shift photo-generated carrier after γ-bismuth molybdate Material cladding, inhibits light
The compound of electron-hole pair is given birth to, while big specific surface area being provided, improved graphene-γ-bismuth molybdate nano-composite catalyst
Photocatalytic activity, and the oxygen-containing functional group at graphene edge has strong adsorptivity to organic pollutant, can also enhance multiple
The photocatalytic activity of condensation material.
The invention has the benefit that the present invention using graphene, bismuth nitrate, ethylene glycol, sodium molybdate as primary raw material, uses
Solvent heat and hydro-thermal method prepare graphene-γ-bismuth molybdate nanocomposite, and obtained composite material chemical component is uniform, stone
Black alkene high degree of dispersion, since graphene has high electron acceptability, γ-bismuth molybdate composite material is in photocatalysis, electronics-
Hole separation rate is high, and photocatalysis effect is significantly improved than compound phase ratio.While this preparation process equipment is simple, reaction condition temperature
With low energy consumption.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not
It is limited only to the following examples.
Following embodiment unless specific instructions, the commercially available chemical reagent of the reagent of use or industrial products.
Embodiment 1
Graphene-γ-bismuth molybdate nanocomposite preparation method, comprising the following steps:
1) 100g bismuth nitrate is dissolved in 1L ethylene glycol, 0.5g Graphene powder is then added and is uniformly mixed, obtained steady
Determine suspension, this solution is transferred in the autoclave that volume is 2L, is heated to 160 DEG C and keeps the temperature 24 hours；It is cold to reaction kettle
But then 12 hours dry at 80 DEG C to room temperature, filtering and with ethanol washing 3 times, obtain graphene-ethylene glycol bismuth meal body；
2) 25g sodium molybdate is taken to be dissolved in 250ml deionized water, then be added graphene-ethylene glycol powder 50g is prepared in 1)
In above-mentioned sodium molybdate aqueous solution, ultrasonic oscillation stirring makes it be uniformly dispersed, with concentrated nitric acid and concentrated hydrochloric acid adjust solution ph to
Between 0-3, then gained mixed liquor is transferred in the autoclave that volume is 500mL, is warming up to 200 DEG C and keeps the temperature 1 hour, to anti-
It answers kettle to be cooled to room temperature, deionized water and ethanol washing 5 times is used after filtering, then drying 4 hours at 120 DEG C, obtain graphene-molybdenum
Sour bismuth sodium nanocomposite.
The present embodiment products therefrom γ-bismuth molybdate nanometer chip average thickness is 10nm, specific surface area 60m2/ g, dense
Spend 1.0g/L when, it is seen that light irradiation under can in 30min degradable 0.02g/L rhodamine.
Embodiment 2
Graphene-γ-bismuth molybdate nanocomposite preparation method, comprising the following steps:
1) 50g bismuth nitrate is dissolved in 1L ethylene glycol, 2.5g Graphene powder is then added and is uniformly mixed, is stablized
This solution is transferred in the autoclave that volume is 2L by suspension, is heated to 180 DEG C and is kept the temperature 2 hours；It is cooled to reaction kettle
Room temperature, filter and with ethanol washing 3 times, then at 80 DEG C dry 6 hours, obtain graphene-ethylene glycol bismuth meal body；
2) it takes 4g sodium molybdate to be dissolved in 200ml deionized water, then adds graphene-ethylene glycol bismuth meal end 10g is prepared in 1)
Enter in above-mentioned sodium molybdate aqueous solution, ultrasonic oscillation stirring makes it be uniformly dispersed, and adjusts solution ph with concentrated nitric acid and concentrated hydrochloric acid
To between 0-3, then gained mixed liquor is transferred in the autoclave that volume is 500mL, is warming up to 150 DEG C and keeps the temperature 24 hours,
It is cooled to room temperature to reaction kettle, deionized water and ethanol washing 2 times is used after filtering, then drying 12 hours at 80 DEG C, obtain graphite
Alkene-bismuth molybdate sodium nanocomposite.
The present embodiment products therefrom γ-bismuth molybdate nanometer chip average thickness is 12nm, specific surface area 55m2/ g, dense
Spend 1.0g/L when, it is seen that light irradiation under can in 30min degradable 0.02g/L rhodamine.
Embodiment 3
Graphene-γ-bismuth molybdate nanocomposite preparation method, comprising the following steps:
1) 50g bismuth nitrate is dissolved in 1L ethylene glycol, 2g Graphene powder is then added and is uniformly mixed, obtain stablizing outstanding
This solution is transferred in the autoclave that volume is 2L by turbid, is heated to 170 DEG C and is kept the temperature 12 hours；It is cooled to reaction kettle
Room temperature, filter and with ethanol washing 3 times, then at 100 DEG C dry 4 hours, obtain graphene-ethylene glycol bismuth meal body；
2) it takes 3.5g sodium molybdate to be dissolved in 100ml deionized water, then graphene-ethylene glycol bismuth meal end 10g will be prepared in 1)
It is added in above-mentioned sodium molybdate aqueous solution, ultrasonic oscillation stirring makes it be uniformly dispersed, and adjusts pH value of solution with concentrated nitric acid and concentrated hydrochloric acid
Then gained mixed liquor is transferred in the autoclave that volume is 200mL by value between 0-3, it is small to be warming up to 180 DEG C of heat preservations 12
When, it is cooled to room temperature to reaction kettle, deionized water and ethanol washing 3 times is used after filtering, then drying 12 hours at 100 DEG C, obtained
Graphene-bismuth molybdate sodium nanocomposite.
The present embodiment products therefrom γ-bismuth molybdate nanometer chip average thickness is 20nm, specific surface area 40m2/ g, dense
Spend 1.0g/L when, it is seen that light irradiation under can in 30min degradable 0.02g/L rhodamine.
Embodiment 4
Graphene-γ-bismuth molybdate nanocomposite preparation method, comprising the following steps:
1) 10g bismuth nitrate is dissolved in 1L ethylene glycol, 0.5g Graphene powder is then added and is uniformly mixed, is stablized
This solution is transferred in the autoclave that volume is 2L by suspension, is heated to 160 DEG C and is kept the temperature 24 hours；It is cooling to reaction kettle
It is then 4 hours dry at 100 DEG C to room temperature, filtering and with ethanol washing 3 times, obtain graphene-ethylene glycol bismuth meal body；
2) it takes 2.5g sodium molybdate to be dissolved in 100ml deionized water, then adds graphene-ethylene glycol bismuth meal end 5g is prepared in 1)
Enter in above-mentioned sodium molybdate aqueous solution, ultrasonic oscillation stirring makes it be uniformly dispersed, and adjusts solution ph with concentrated nitric acid and concentrated hydrochloric acid
To between 0-3, then gained mixed liquor is transferred in the autoclave that volume is 200mL, is warming up to 200 DEG C and keeps the temperature 24 hours,
It is cooled to room temperature to reaction kettle, deionized water and ethanol washing 3 times is used after filtering, then drying 12 hours at 100 DEG C, obtain graphite
Alkene-bismuth molybdate sodium nanocomposite.
The present embodiment products therefrom γ-bismuth molybdate nanometer chip average thickness is 40nm, specific surface area 30m2/ g, dense
Spend 1.0g/L when, it is seen that light irradiation under can in 60min degradable 0.02g/L rhodamine.
Each raw material proportioning cited by the present invention can realize the bound value of the present invention and each raw material, interval value
It can realize the present invention, the bound value and interval value of technological parameter of the invention can realize the present invention, different herein
One enumerates embodiment.
Claims (7)
1. a kind of graphene-γ-bismuth molybdate nanocomposite preparation method, comprising the following steps: 1) by graphene, nitric acid
Bismuth and ethylene glycol solvent thermal reaction together, using filter, washing, dry to obtain graphene-ethylene glycol bismuth compound；The solvent heat
Reaction condition are as follows: be heated to 160-180 DEG C of insulation reaction 2-24 hours, then cooled to room temperature；It is dried described in step 1)
Temperature is 80-100 DEG C；2) gained compound is dispersed in sodium molybdate aqueous solution, adjusts the pH value of acquired solution system
For 0-3, hydro-thermal reaction is then carried out, the hydrothermal reaction condition is to be heated to 150-200 DEG C of insulation reaction 1-24 hours；It passes through again
It is filtered, washed, dries to obtain graphene-γ-bismuth molybdate nanocomposite；Drying temperature described in step 2 is 80-120 DEG C.
2. preparation method according to claim 1, which is characterized in that the graphene is the 0.5-5% of bismuth nitrate quality.
3. preparation method according to claim 1, which is characterized in that concentration of the bismuth nitrate in ethylene glycol is 10-
100g/L。
4. preparation method according to claim 1, which is characterized in that the sodium molybdate and graphene-ethylene glycol bismuth are compound
The mass ratio of object is (0.35-0.5): 1.
5. preparation method according to claim 1, which is characterized in that the concentration of the sodium molybdate aqueous solution is 20-100g/
L。
6. graphene-γ-bismuth molybdate nanocomposite made from any one of claim 1 ~ 5 preparation method, to receive
Rice wafer-like, wafer thickness 10-40nm, specific surface area 30-60m2/g。
7. graphene-γ as claimed in claim 6-application of the bismuth molybdate nanocomposite as catalysis material.
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| CN108031467B (en) * | 2017-12-08 | 2019-10-18 | 浙江工业大学 | A kind of Bi2MoO6Coat halloysite nanotubes composite material and preparation method and application |
| CN111450822B (en) * | 2020-04-09 | 2023-04-28 | 浙江工业大学 | Preparation method of bismuth molybdate coated tourmaline composite photocatalyst |
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