CN106732730B - Manganese oxide cooperates with application of the azepine graphene near infrared light denitrogenation - Google Patents
Manganese oxide cooperates with application of the azepine graphene near infrared light denitrogenation Download PDFInfo
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- CN106732730B CN106732730B CN201611242658.9A CN201611242658A CN106732730B CN 106732730 B CN106732730 B CN 106732730B CN 201611242658 A CN201611242658 A CN 201611242658A CN 106732730 B CN106732730 B CN 106732730B
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- ammonia nitrogen
- manganese oxide
- azepine
- grapheme material
- near infrared
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- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 title claims abstract description 84
- XYOVOXDWRFGKEX-UHFFFAOYSA-N azepine Chemical compound N1C=CC=CC=C1 XYOVOXDWRFGKEX-UHFFFAOYSA-N 0.000 title claims abstract description 51
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 10
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 38
- 150000001875 compounds Chemical class 0.000 claims abstract description 34
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims abstract description 10
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 11
- 238000005286 illumination Methods 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 9
- 229910001868 water Inorganic materials 0.000 claims description 9
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 8
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 8
- 239000011565 manganese chloride Substances 0.000 claims description 8
- 229940099607 manganese chloride Drugs 0.000 claims description 8
- 235000002867 manganese chloride Nutrition 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000012286 potassium permanganate Substances 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- OQVYMXCRDHDTTH-UHFFFAOYSA-N 4-(diethoxyphosphorylmethyl)-2-[4-(diethoxyphosphorylmethyl)pyridin-2-yl]pyridine Chemical compound CCOP(=O)(OCC)CC1=CC=NC(C=2N=CC=C(CP(=O)(OCC)OCC)C=2)=C1 OQVYMXCRDHDTTH-UHFFFAOYSA-N 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 27
- 238000006731 degradation reaction Methods 0.000 abstract description 27
- 239000003054 catalyst Substances 0.000 abstract description 14
- 230000003197 catalytic effect Effects 0.000 abstract description 8
- 239000000243 solution Substances 0.000 description 14
- 238000002835 absorbance Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002114 nanocomposite Substances 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 229910006648 β-MnO2 Inorganic materials 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 2
- 229940074439 potassium sodium tartrate Drugs 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 2
- 229910003144 α-MnO2 Inorganic materials 0.000 description 2
- NXMWOOVRJPJOSH-UHFFFAOYSA-N C1(=CC=CC=C1)O.C1(=CC=CC=C1)O.[Cl] Chemical compound C1(=CC=CC=C1)O.C1(=CC=CC=C1)O.[Cl] NXMWOOVRJPJOSH-UHFFFAOYSA-N 0.000 description 1
- 241001125671 Eretmochelys imbricata Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention discloses a kind of application of manganese oxide collaboration azepine graphene near infrared light denitrogenation, comprising: is N by ammonia nitrogen degradation using the compound azepine grapheme material of manganese oxide as photochemical catalyst under the conditions of near infrared light2And H2O.The compound azepine grapheme material catalytic degradation ammonia nitrogen of manganese oxide of the invention, has the function of molecular recognition and infrared photocatalytic degradation to ammonia nitrogen, ammonia nitrogen can be degraded to N under near infrared light2And H2O can still make degradation rate > 92% of ammonia nitrogen after the catalyst repeats catalytic degradation ammonia nitrogen 5~10 times.
Description
Technical field
The present invention relates to a kind of compound azepine grapheme material of manganese oxide and its using near infrared light in catalytic degradation ammonia nitrogen
In application.
Background technique
It can solve environmental energy problem using the sun, utilize TiO originating from Fujishima in 19722Optoelectronic pole electrolysis water
Hydrogen manufacturing, subsequent Carey were reported in 1976 and are utilized TiO2The toxicity of more chlorine diphenol is eliminated in photochemical catalytic oxidation, from this, using too
Sun can degrade environmental contaminants research rapidly become people research hot spot.But TiO2It can only be left using solar energy 4% is accounted for
Right ultraviolet light, to TiO2It is doped and develops Fe2O3、WO3、Bi2WO6Equal new catalysts, although part is solved to can
Light-exposed Utilizing question, but account for the infrared light of solar energy nearly 50% it is still necessary to develop and use.
Summary of the invention
The main purpose of the present invention is to provide a kind of manganese oxide to cooperate with azepine graphene answering near infrared light denitrogenation
With to overcome deficiency in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment of the present invention provides a kind of compound azepine grapheme material of manganese oxide light under near infrared light illumination condition and urges
Change the purposes in degradation of ammonia nitrogen.
Further, the compound azepine grapheme material of the manganese oxide include azepine grapheme material and 1wt%~
10wt% manganese oxide particle, the manganese oxide are distributed in azepine grapheme material surface and/or the azepine graphene
In layer structure.
Further, the specific surface area of the compound azepine grapheme material of the manganese oxide is 12~16m2/g。
Further, the partial size of the compound azepine grapheme material of the manganese oxide is 4.0~5.6nm, adjacent manganese oxide layer
Spacing is 0.54~0.7nm.
In some embodiments, the ammonia nitrogen includes NH3And/or NH4 +。
Further, the compound azepine grapheme material of the manganese oxide includes the compound azepine grapheme material of α-manganese dioxide
And/or the compound azepine grapheme material of β-manganese dioxide, but not limited to this.
In some embodiments, the range of wavelengths lambda of the near infrared light is 780nm~2500nm.
The embodiment of the present invention also provides a kind of ammonia nitrogen purification method comprising: by the compound azepine grapheme material of manganese oxide
The liquid-phase system containing ammonia nitrogen is added, and with liquid-phase system described near infrared light illumination, makes the ammonia nitrogen by photocatalytic degradation
N2And H2O。
In a little embodiments, the mass ratio of the compound azepine grapheme material of the manganese oxide and ammonia nitrogen be 100mg:5~
50mg。
Further, the liquid phase sample to be tested containing ammonia nitrogen is mixed into the compound azepine grapheme material of manganese oxide and is kept away
In Photoreactor, and the optical filter that only near infrared light can be made to pass through is set at the illumination window for being protected from light device, later
With light source irradiate described in be protected from light device, make ammonia nitrogen therein by photocatalytic degradation N2And H2O。
Compared with prior art, the invention has the advantages that the compound azepine grapheme material catalysis of manganese oxide of the invention
Degradation of ammonia nitrogen has the function of infrared photocatalytic degradation, using near infrared light can degradation of ammonia nitrogen be N2And H2O has ammonia nitrogen and divides
Sub- identification function, and after the catalyst repetition catalytic degradation ammonia nitrogen 5~10 times, the degradation rate of the ammonia nitrogen is still > 92%.
Detailed description of the invention
Fig. 1 is manganese oxide composite reactive Carbon Materials (NG- α-MnO obtained in the embodiment of the present invention 12) ammonia nitrogen degradation rate with
The change curve of time；
Fig. 2 is manganese oxide composite reactive Carbon Materials (NG- β-MnO obtained in the embodiment of the present invention 22) it is repeated 7 times rear ammonia
The curve graph of nitrogen degradation rate.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to the accompanying drawing to specific reality of the invention
The mode of applying is described in detail.The example of these preferred embodiments is illustrated in the accompanying drawings.Shown in attached drawing and according to
The embodiments of the present invention of attached drawing description are only exemplary, and the present invention is not limited to these embodiments.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show with closely related structure and/or processing step according to the solution of the present invention, and be omitted little with relationship of the present invention
Other details.
The embodiment of the present invention provides a kind of compound azepine grapheme material of manganese oxide light under near infrared light illumination condition and urges
Change the purposes in degradation of ammonia nitrogen.
Further, the compound azepine grapheme material of the manganese oxide include azepine grapheme material and 1wt%~
10wt% manganese oxide particle, the manganese oxide are distributed in azepine grapheme material surface and/or the azepine graphene
In layer structure.
Further, the specific surface area of the compound azepine grapheme material of the manganese oxide is 12~16m2/g。
Further, the partial size of the compound azepine grapheme material of the manganese oxide is 4.0~5.6nm, adjacent manganese oxide layer
Spacing is 0.54~0.7nm.
In some embodiments, the ammonia nitrogen includes NH3And/or NH4 +。
Further, the compound azepine grapheme material of the manganese oxide includes the compound azepine grapheme material of α-manganese dioxide
And/or the compound azepine grapheme material of β-manganese dioxide, but not limited to this.
In some embodiments, the range of wavelengths lambda of the near infrared light is 780nm~2500nm.
The embodiment of the present invention also provides a kind of ammonia nitrogen purification method comprising: by the compound azepine grapheme material of manganese oxide
The liquid-phase system containing ammonia nitrogen is added, and with liquid-phase system described near infrared light illumination, makes the ammonia nitrogen by photocatalytic degradation
N2And H2O。
In a little embodiments, the mass ratio of the compound azepine grapheme material of the manganese oxide and ammonia nitrogen be 100mg:5~
50mg。
Further, the liquid phase sample to be tested containing ammonia nitrogen is mixed into the compound azepine grapheme material of manganese oxide and is kept away
In Photoreactor, and the optical filter that only near infrared light can be made to pass through is set at the illumination window for being protected from light device, later
With light source irradiate described in be protected from light device, make ammonia nitrogen therein by photocatalytic degradation N2And H2O。
In one more preferred embodiment, a kind of purification method of ammonia nitrogen is specifically included:
(1) Photoreactor and optical filter are provided, to guarantee to only have near infrared radiation to enter Photoreactor；
(2) sample to be tested and the compound azepine grapheme material of manganese oxide are added in the Photoreactor in step (1), covers
Optical filter, then it is placed in illumination under light source, sample to be tested described in different time sections is measured in the light absorption value of visible light wave range；
(3) according to formula: ammonia nitrogen degradation rate=(1-Ci/C0) × 100%=(1-Ai/A0) × 100% calculates ammonia nitrogen
Degradation rate.
Further, light absorption value of the sample to be tested at 554nm is measured.
Further, after the compound azepine grapheme material of the manganese oxide repeats catalytic degradation ammonia nitrogen 5~10 times, ammonia nitrogen
Degradation rate is still > 88%.
Technology of the invention is further explained below in conjunction with drawings and examples.
Embodiment 1
(1)NG-α-MnO2Preparation: weigh manganese chloride and potassium permanganate (molar ratio 3:2), and be dissolved separately in 20mL
In deionized water, 5% azepine graphene of manganese dioxide theoretical yield is added into manganese chloride solution, shifts within ultrasound 1 hour
To three-neck flask, potassium permanganate is added dropwise to 85 DEG C in heating water bath, reflux condensing tube 12h, later filtration washing, in 70 DEG C of items
It is dried in vacuo 12 h under part, obtains the azepine graphene-α-manganese dioxide nano composite photo-catalyst.
(2) photocatalysis is tested: being encased the wall of cup of a 100ml beaker with masking foil, to avoid ultraviolet light and visible light
It into reaction system, is covered on beaker mouth with λ > 780nm cut-off type optical filter, to guarantee to only have near infrared radiation to enter light
Reactor, by 300W it is ultraviolet~visible lamp is placed in above reactor.Certain density ammonia nitrogen solution is added in beaker, uses
NaHCO3-Na2CO3(0.1mol/L) buffer solution adjusts pH value, and a certain amount of azepine graphene-α-dioxy is added into beaker
Change manganese nano composite photo-catalyst, be placed under light source, magnetic stirrer, per the suction for measuring remaining ammonia nitrogen solution every other hour
Luminosity.Take 1ml ammonia nitrogen solution, add 1.5ml nessler reagent, 1ml potassium sodium tartrate solution is diluted to 50ml, with T1901 is ultraviolet can
See the absorbance at spectrophotometric determination 388nm, the degradation rate of ammonia nitrogen is calculated with this.
Ammonia nitrogen degradation rate=(1-Ci/C0) × 100%=(1-Ai/A0) × 100%
In formula, C0For the initial concentration of ammonia nitrogen, A0For the absorbance of initial soln, CiFor the concentration of remaining ammonia nitrogen, AiIt is surplus
The absorbance of remaining ammonia nitrogen.
Referring to Fig. 1, after photocatalytic degradation 8h, the degradation rate of ammonia nitrogen is 92%.
(4) stability of hybrid catalyst catalyst stability: is evaluated by multiple circulation experiment.)NG-α-MnO2It urges
The degradation rate of agent continuous 7 catalytic degradation ammonia nitrogens under near infrared radiation.Therapy lasted 8h each time degrades each time
After, it washs to obtain catalyst by centrifuge separation, deionized water, is then further continued for that the catalyst is recycled.
Embodiment 2
NG-β-MnO2Preparation: weigh manganese chloride and potassium permanganate (molar ratio 3:2), be dissolved separately in 20mL go from
In sub- water, 5% azepine graphene of manganese dioxide theoretical yield is added in manganese chloride solution later, Gao Meng is added in ultrasound 1 hour
Sour potassium solution stirs 30min, is transferred in 100ml reaction kettle, heats 12h under the conditions of 160 DEG C, be cooled to room temperature, and crosses diafiltration
It washs, and dries 12h under 70 DEG C of vacuum, obtain the azepine graphene-β-manganese dioxide nano hydridization photochemical catalyst.
(2) photocatalysis is tested: being encased the wall of cup of a 100ml beaker with masking foil, to avoid ultraviolet light and visible light
It into reaction system, is covered on beaker mouth with λ > 780nm cut-off type optical filter, to guarantee to only have near infrared radiation to enter light
Reactor, by 300W it is ultraviolet~visible lamp is placed in above reactor.Certain density ammonia nitrogen solution is added in beaker, uses
NaHCO3-Na2CO3(0.1mol/L) buffer solution adjusts pH value, and a certain amount of azepine graphene-β-dioxy is added into beaker
Change manganese nano composite photo-catalyst, be placed under light source, magnetic stirrer, per the suction for measuring remaining ammonia nitrogen solution every other hour
Luminosity.Take 1ml ammonia nitrogen solution, add 1.5ml nessler reagent, 1ml potassium sodium tartrate solution is diluted to 50ml, with T1901 is ultraviolet can
See the absorbance at spectrophotometric determination 388nm, the degradation rate of ammonia nitrogen is calculated with this.
Ammonia nitrogen degradation rate=(1-Ci/C0) × 100%=(1-Ai/A0) × 100%
In formula, C0For the initial concentration of ammonia nitrogen, A0For the absorbance of initial soln, CiFor the concentration of remaining ammonia nitrogen, AiIt is surplus
The absorbance of remaining ammonia nitrogen.
(4) stability of hybrid catalyst catalyst stability: is evaluated by multiple circulation experiment.)NG-β-MnO2It urges
The degradation rate of agent continuous 7 catalytic degradation ammonia nitrogens under near infrared radiation.Therapy lasted 8h each time degrades each time
After, it washs to obtain catalyst by centrifuge separation, deionized water, is then further continued for that the catalyst is recycled.Referring to fig. 2
It is shown) NG- β-MnO2After the 7 circulation degradations of catalyst photocatalytic degradation ammonia nitrogen, ammonia nitrogen removal frank is still 92% or more.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
Equivalent change or modification made by Spirit Essence according to the present invention, should be covered by the protection scope of the present invention.
Claims (4)
1. purposes of the compound azepine grapheme material of manganese oxide under near infrared light illumination condition in photocatalytic degradation ammonia nitrogen, special
Sign is: the compound azepine grapheme material of manganese oxide the preparation method is as follows: weigh molar ratio be 3:2 manganese chloride and height
Potassium manganate, and be dissolved separately in 20mL deionized water, 5% nitrogen of manganese dioxide theoretical yield is added into manganese chloride solution
Miscellaneous graphene, ultrasound are transferred to three-neck flask for 1 hour, and potassium permanganate is added dropwise to 85 DEG C in heating water bath, reflux condensing tube 12h,
Filtration washing later is dried in vacuo 12h under the conditions of 70 DEG C, obtains the compound azepine grapheme material of manganese oxide；The ammonia nitrogen is
NH3And/or NH4 +；The wave-length coverage of the near infrared light is 780nm~2500nm.
2. a kind of purification method of ammonia nitrogen, characterized by comprising: the compound azepine grapheme material addition of manganese oxide is contained ammonia
The liquid-phase system of nitrogen, and with liquid-phase system described near infrared light illumination, make the ammonia nitrogen by photocatalytic degradation N2And H2O；
The compound azepine grapheme material of manganese oxide the preparation method is as follows: weigh molar ratio be 3:2 manganese chloride and Gao Meng
Sour potassium, and be dissolved separately in 20mL deionized water, 5% azepine of manganese dioxide theoretical yield is added into manganese chloride solution
Graphene, ultrasound are transferred to three-neck flask for 1 hour, and potassium permanganate is added dropwise to 85 DEG C in heating water bath, reflux condensing tube 12h, it
Filtration washing afterwards is dried in vacuo 12h under the conditions of 70 DEG C, obtains the compound azepine grapheme material of manganese oxide；The ammonia nitrogen is NH3
And/or NH4 +；The wave-length coverage of the near infrared light is 780nm~2500nm.
3. the purification method of ammonia nitrogen as claimed in claim 2, it is characterised in that: the compound azepine grapheme material of manganese oxide with
The mass ratio of ammonia nitrogen is 100mg:5~50mg.
4. the purification method of ammonia nitrogen as claimed in claim 2, characterized by comprising: by the liquid phase sample to be tested containing ammonia nitrogen with
The compound azepine grapheme material of manganese oxide, which is mixed into, to be protected from light in device, and is set at the illumination window for being protected from light device
Set the optical filter that only near infrared light can be made to pass through, later with light source irradiate described in be protected from light device, urge ammonia nitrogen therein by light
Change is degraded to N2And H2O。
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004344720A (en) * | 2003-05-20 | 2004-12-09 | Hasshin Tech Kk | Co2 reduction method, artificial photosynthesis induction substance and co2 reduction apparatus |
| CN104588065A (en) * | 2015-02-09 | 2015-05-06 | 中国科学院城市环境研究所 | Rare-earth composite g-C3N4 graphene photocatalyst and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004344720A (en) * | 2003-05-20 | 2004-12-09 | Hasshin Tech Kk | Co2 reduction method, artificial photosynthesis induction substance and co2 reduction apparatus |
| CN104588065A (en) * | 2015-02-09 | 2015-05-06 | 中国科学院城市环境研究所 | Rare-earth composite g-C3N4 graphene photocatalyst and preparation method thereof |
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