CN108940330A - A kind of BiOCl/g-C3N4The preparation method of heterojunction photocatalyst - Google Patents
A kind of BiOCl/g-C3N4The preparation method of heterojunction photocatalyst Download PDFInfo
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- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 10
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 10
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000002604 ultrasonography Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- 238000005352 clarification Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 4
- 239000008367 deionised water Substances 0.000 abstract description 2
- 229910021641 deionized water Inorganic materials 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract description 2
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- PPNKDDZCLDMRHS-UHFFFAOYSA-N dinitrooxybismuthanyl nitrate Chemical class [Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PPNKDDZCLDMRHS-UHFFFAOYSA-N 0.000 abstract 1
- 238000005215 recombination Methods 0.000 abstract 1
- 230000006798 recombination Effects 0.000 abstract 1
- 229940073609 bismuth oxychloride Drugs 0.000 description 38
- 230000001699 photocatalysis Effects 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 235000019441 ethanol Nutrition 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007146 photocatalysis Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000694 effects 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
- 229940043267 rhodamine b Drugs 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- FIDRAVVQGKNYQK-UHFFFAOYSA-N 1,2,3,4-tetrahydrotriazine Chemical group C1NNNC=C1 FIDRAVVQGKNYQK-UHFFFAOYSA-N 0.000 description 1
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- 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
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of BiOCl/g-C3N4The preparation method of heterojunction photocatalyst.First by class graphite-phase C3N4Powder isopropanol and deionized water successively ultrasound removing obtain g-C3N4Nanometer sheet.Five water bismuth nitrates, ammonium chloride and polyvinylpyrrolidone are stirred in ethylene glycol, g-C is then added3N4Nanometer sheet forms mixing precursor liquid, finally, BiOCl/g-C is made by solvent-thermal method3N4Composite photo-catalyst.The preparation method simple process and low cost that the present invention uses, the heterojunction photocatalyst prepared can quick separating light induced electron and hole, reduce photoelectron and hole recombination rate, to visible light have good response.
Description
Technical field
The invention belongs to the preparation fields of photochemical catalyst, and in particular to a kind of BiOCl/g-C3N4Heterojunction photocatalyst
Preparation method.
Background technique
Bismuth oxychloride (BiOCl) is indirect band-gap semiconductor, is a kind of environmentally friendly pearlescent material of novel top grade, non-toxic,
Low grease absorbs, and it is the important source material in cosmetics synthesis that skin adhesion is strong and pearl effect.BiOCl is in ultraviolet light
Lower photocatalysis performance is higher, but photocatalysis performance under visible light illumination is still insufficient, therefore improves BiOX in visible light
Photocatalysis performance under irradiation has far-reaching significance water pollution control and air cleaning.
(the Novel p-n heterojunction photocatalyst constructed by porous of document 1
graphite-like C3N4and nanostructured BiOI:facile synthesis and enhanced
Photocatalytic activity. [J] .Dalton Trans, 2013,42 (44): 15726-15734) in disclose one kind
The photochemical catalyst of the modification of carbonitride, although photocatalysis efficiency is improved, its visible region absorption efficiency still
It is very low.Chinese patent application 201510308315.7 discloses a kind of method that BiOCl is composite modified, although preparation method
Simply, material is cheap, improves the photocatalysis efficiency of BiOCl, but response area is still ultraviolet region, in practical applications still by
To very big limitation.
Graphite phase carbon nitride (g-C3N4) it is the very popular narrow gap semiconductor catalyst of current research.Graphite-phase nitridation
The layer structure that the two dimension that carbon is made of the polymerization triazine ring element being conjugated is similar to graphite is accumulated.Because of the electronics changed
Arrangement and nitrogen substitution strengthen interlaminar action power, so the interlamellar spacing of carbon nitride material is less than graphene.g-C3N4Nanometer sheet
Bigger serface and the two-dimensional surface conjugated structure basis material that makes it be very suitable for doing composite material, and g-C3N4It can be logical
The various cheap organosilane precursors containing C, N element are crossed to obtain.
Summary of the invention
In order to solve the problems, such as that photocatalytic activity of the existing bismuth oxychloride under visible light catalytic is low, the present invention provides
A kind of BiOCl/g-C3N4The preparation method of heterojunction photocatalyst, it is compound using calcining-solvent-thermal process method synthesis binary
Catalyst BiOCl/g-C3N4。
Technical scheme is as follows:
A kind of BiOCl/g-C3N4Heterojunction photocatalyst preparation method, the specific steps are as follows:
Step 1, by graphite-phase C3N4Powder is added in isopropanol, 3~5h of ultrasound, after centrifugal drying, is added to the water,
1~2h of ultrasound, centrifugal drying obtain removing class graphite-phase C3N4Powder；
Step 2, by Bi (NO3)3·5H2O is dissolved in ethylene glycol, sequentially adds NH4Cl and polyvinylpyrrolidone
(PVP), stirring to solution is clarified, and obtains clear solution A；
Step 3, by g-C3N4With the molar ratio 1:5-15 of Bi, class graphite-phase C will be removed3N4Powder is added in solution A,
It stirs evenly, ultrasonic disperse, obtains milky solution B；
Step 4, solution B is heated at 170~180 DEG C reaction 20~for 24 hours, after reaction, be cooled to room temperature, from
The heart, washing and alcohol are washed, dry, obtain BiOCl/g-C3N4Heterojunction photocatalyst.
Preferably, in step 2, the molar ratio of Bi and Cl are 1:2-4.
Preferably, in step 3, g-C3N4Molar ratio with Bi is 1:8~10.
The preparation method simple process and low cost that the present invention uses, the heterojunction photocatalyst pattern prepared is uniform,
Large specific surface area can come into full contact with dye solution.The heterojunction photocatalyst of the method for the present invention preparation can be short by rhodamine B
Time degradation has good response completely, to visible light, repeats experiment and shows good stability.
Detailed description of the invention
Fig. 1 is BiOCl nanometer sheet/g-C prepared by embodiment 13N4The XRD diagram of nanometer sheet -1.
Fig. 2 is BiOCl nanometer sheet/g-C prepared by embodiment 23N4The FT-IR spectrogram of nanometer sheet -2.
Fig. 3 is BiOCl nanometer sheet/g-C prepared by embodiment 33N4The SEM of nanometer sheet -3 schemes.
Fig. 4 is that embodiment 1-4 and comparative example 1-2 prepares BiOCl nanometer sheet/g-C3N4The visible light photocatalytic degradation of nanometer sheet
The degradation curve figure of rhodamine B.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described.
Embodiment 1
The urea of 10g is placed in 100mL crucible, covers crucible lid, with masking foil by its tight package, at 550 DEG C
Roast 3h, 15 DEG C of min of heating rate-1.By 0.4g sample in 80mL isopropanol ultrasound 3h, be then centrifuged for separating.After separating
Sample in 100mL deionized water ultrasound 1h, stand 1h, upper layer emulsion taken to be centrifugated, it is 60 DEG C in an oven, final
To micro-yellow powder g-C3N4Nanometer sheet.
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 4mmolNH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Weigh 5.2mg g-C3N4Nanometer sheet is dispersed in clear solution (molar ratio
G-C3N4:Bi=1:5), 1h, ultrasonic 1h are stirred.Then resulting liquid is transferred to high pressure of the 50mL containing polytetrafluoroethylliner liner
In reaction kettle, the constant temperature 20h at 170 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, ethyl alcohol is washed 3 times, 70 DEG C of bakings
It is dry, finally obtain white BiOCl nanometer sheet/g-C3N4Nanometer sheet heterojunction photocatalyst is denoted as BiOCl nanometer sheet/g-C3N4It receives
Rice piece -1.
To the nanometer sheet of BiOCl made from embodiment 1/g-C3N4Nanometer sheet -1 carries out X-ray powder diffraction characterization, such as Fig. 1
It is shown.From XRD spectra, it can be clearly seen that composite catalyst completely maintains the crystalline structure of BiOCl.But it is not detected
g-C3N4The diffraction maximum of nanometer sheet, this be attributed to it crystal property it is poor and compound amount it is less caused by.
Embodiment 2
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 4mmol NH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Weigh the g-C prepared in 15.6mg embodiment 13N4Nanometer sheet is dispersed in clear
(molar ratio g-C in clear solution3N4: Bi=1:15), stir 1h, ultrasonic 1h.Then resulting liquid is transferred to 50mL containing polytetrafluoro
In the autoclave of ethylene liner, constant temperature is for 24 hours at 180 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, second
Alcohol is washed 3 times, and 70 DEG C of drying finally obtain white BiOCl nanometer sheet/g-C3N4Nanometer sheet heterojunction photocatalyst, is denoted as BiOCl
Nanometer sheet/g-C3N4Nanometer sheet -2.
To the nanometer sheet of BiOCl made from embodiment 2/g-C3N4Nanometer sheet -2 carries out FT-IR characterization, as shown in Figure 2.From red
Discovery is in 1635 and 1405cm in outer spectrogram-1The absorbing wavelength at place is the stretching vibration of fragrant C-N, fully confirms g-C3N4It receives
The presence of rice piece.In 1316 and 1237cm-1The absorption peak at place is attributed to the stretching vibration of C-N (- C)-C and C-NH-C.In 3500-
3000cm-1Locate the NH of the end of wide in range absorption peak and aromatic ring fault location2Or the stretching vibration of NH is consistent.Meanwhile
809cm-1Locating sharp absorption peak is the out-of plane bending vibration performance due to 5-triazine units.
Embodiment 3
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 2mmolNH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Weigh the g-C prepared in 10.4mg embodiment 13N4Nanometer sheet is dispersed in clear
(molar ratio g-C in clear solution3N4: Bi=1:10), stir 1h, ultrasonic 1h.Then resulting liquid is transferred to 50mL containing polytetrafluoro
In the autoclave of ethylene liner, the constant temperature 20h at 180 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, second
Alcohol is washed 3 times, and 70 DEG C of drying finally obtain white BiOCl nanometer sheet/g-C3N4Nanometer sheet heterojunction photocatalyst, is denoted as BiOCl
Nanometer sheet/g-C3N4Nanometer sheet -3.
To the nanometer sheet of BiOCl made from embodiment 3/g-C3N4Nanometer sheet -3 carries out SEM characterization, as a result as shown in Figure 3.Scheme a
It is the hierarchical structure of BiOCl nanometer sheet.Figure b is the partial enlarged view of figure a, it can be seen that its lamellar spacing is in 10nm from figure b
Left and right.
Embodiment 4
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 2mmolNH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Weigh the g-C prepared in 8.3mg embodiment 13N4Nanometer sheet is dispersed in clarification
(molar ratio g-C in solution3N4: Bi=1:8), stir 1h, ultrasonic 1h.Then resulting liquid is transferred to 50mL containing polytetrafluoroethyl-ne
In the autoclave of alkene liner, constant temperature is for 24 hours at 170 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, ethyl alcohol
It washes 3 times, 70 DEG C of drying finally obtain white BiOCl nanometer sheet/g-C3N4 nanometer sheet heterojunction photocatalyst, are denoted as BiOCl and receive
Rice piece/g-C3N4Nanometer sheet -4.
Fig. 4 is the nanometer sheet of BiOCl made from embodiment 1-4/g-C3N4Nanometer sheet heterojunction photocatalyst, comparative example
BiOCl nanometer sheet/g-C3N4The visible light photocatalytic degradation of the BiOCl nanometer sheet of nanometer sheet heterojunction photocatalyst and comparative example 2
The degradation curve figure of 20mg/L rhodamine B.From Fig. 4, hence it is evident that it can be seen that under visible light illumination, made from embodiment 1-4
BiOCl nanometer sheet/g-C3N4Nanometer sheet heterojunction photocatalyst degradation effect is very significant.After illumination 150min, rhodamine B
Content is very low, and degradation efficiency has reached 70% or more.Illustrate BiOCl nanometer sheet/g-C of the method for the present invention preparation3N4Nanometer sheet is different
There are huge potential using values in terms of Visible Light Induced Photocatalytic waste water for matter knot photochemical catalyst.
Comparative example 1
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 4mmolNH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Weigh the g-C prepared in 31.2mg embodiment 13N4Nanometer sheet is dispersed in clear
(molar ratio g-C in clear solution3N4: Bi=1:30), stir 1h, ultrasonic 1h.Then resulting liquid is transferred to 50mL containing polytetrafluoro
In the autoclave of ethylene liner, the constant temperature 20h at 180 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, second
Alcohol is washed 3 times, 70 DEG C in an oven, finally obtains white BiOCl nanometer sheet/g-C3N4Nanometer sheet heterojunction photocatalyst, is denoted as
BiOCl nanometer sheet/g-C3N4Nanometer sheet -5.
It can compare from Fig. 4 and find out, g-C3N4: when Bi=1:30, sample catalytic effect and implement prepared by comparative example 1
Example is substantially reduced compared to effect, illustrates g-C3N4Have with the molar ratio of Bi on the catalysis efficiency of catalyst and significantly affects.
Comparative example 2
By 2mmol Bi (NO3)3·5H2O stirring and dissolving is sequentially added into 2mmolNH in 40mL ethylene glycol4Cl and
0.8g PVP stirring and dissolving, obtains clear solution.Then resulting liquid is transferred to height of the 50mL containing polytetrafluoroethylliner liner
It presses in reaction kettle, constant temperature is for 24 hours at 170 DEG C.It after reaction kettle naturally cools to room temperature, is centrifuged, washing, ethyl alcohol is washed 3 times, dried
70 DEG C in case, white BiOCl nanometer sheet/g-C is finally obtained3N4Nanometer sheet heterojunction photocatalyst is denoted as BiOCl nanometer sheet.
It can compare from Fig. 4 and find out, sample catalytic effect prepared by comparative example 2 effect same compared with embodiment is obvious
It reduces.
Claims (3)
1. a kind of BiOCl/g-C3N4Heterojunction photocatalyst preparation method, which is characterized in that specific step is as follows:
Step 1, by graphite-phase C3N4Powder is added in isopropanol, 3~5h of ultrasound, after centrifugal drying, is added to the water, ultrasound 1
~2h, centrifugal drying obtain removing class graphite-phase C3N4Powder；
Step 2, by Bi (NO3)3·5H2O is dissolved in ethylene glycol, sequentially adds NH4Cl and polyvinylpyrrolidone are stirred to molten
Liquid clarification, obtains clear solution A；
Step 3, by g-C3N4With the molar ratio 1:5-15 of Bi, class graphite-phase C will be removed3N4Powder is added in solution A, and stirring is equal
Even, ultrasonic disperse obtains milky solution B；
Step 4, solution B is heated at 170~180 DEG C reaction 20~for 24 hours, after reaction, be cooled to room temperature, be centrifuged, water
It washes and alcohol is washed, it is dry, obtain BiOCl/g-C3N4Heterojunction photocatalyst.
2. preparation method according to claim 1, which is characterized in that in step 2, the molar ratio of Bi and Cl are 1:2-4.
3. preparation method according to claim 1, which is characterized in that in step 3, g-C3N4With the molar ratio of Bi be 1:8~
10。
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| CN109759121A (en) * | 2019-03-12 | 2019-05-17 | 武汉理工大学 | A kind of preparation method of two dimension Z-type hetero-junctions visible light catalyst |
| 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 |
| CN111330615A (en) * | 2020-03-03 | 2020-06-26 | 徐州工程学院 | Nano bismuth oxychloride/carbon nitride composite material and preparation method and application thereof |
| CN111420695A (en) * | 2020-04-22 | 2020-07-17 | 昆明理工大学 | Composite photocatalyst for degrading organic pollutants by visible light and preparation method thereof |
| CN111715267A (en) * | 2020-07-22 | 2020-09-29 | 陕西科技大学 | Carbon nitride/bismuth oxychloride/tungsten oxide heterojunction photocatalyst and preparation method and application thereof |
| CN112090438A (en) * | 2020-08-07 | 2020-12-18 | 苏州科技大学 | BiOCl/g-C3N4/CeO2Synthesis method of three-phase photocatalytic material |
| CN112221523A (en) * | 2020-08-14 | 2021-01-15 | 南昌航空大学 | Preparation method of ternary nanocomposite for degrading tetracycline |
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| CN111330615A (en) * | 2020-03-03 | 2020-06-26 | 徐州工程学院 | Nano bismuth oxychloride/carbon nitride composite material and preparation method and application thereof |
| CN111330615B (en) * | 2020-03-03 | 2022-12-23 | 徐州工程学院 | Nano bismuth oxychloride/carbon nitride composite material and preparation method and application thereof |
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| CN114618558A (en) * | 2022-04-19 | 2022-06-14 | 合肥工业大学 | BiOI/RGO/g-C3N4Preparation method of composite photocatalyst |
| CN115228494A (en) * | 2022-06-16 | 2022-10-25 | 江苏科技大学 | Fe-BiOI/g-C 3 N 4 Composite photocatalytic material and its preparation method and application |
| CN115228494B (en) * | 2022-06-16 | 2023-12-19 | 江苏科技大学 | Fe-BiOI/g-C 3 N 4 Composite photocatalytic material and preparation method and application thereof |
| CN115501893A (en) * | 2022-09-29 | 2022-12-23 | 塔里木大学 | Novel g-C 3 N 5 Preparation method of-BiOCl heterojunction photocatalyst |
| CN115814837A (en) * | 2023-01-06 | 2023-03-21 | 太原理工大学 | Hollow flower-ball-shaped Z-shaped heterojunction BCN/Bi 2 O 2 [BO 2 (OH)]Photocatalyst and process for producing the same |
| CN115814837B (en) * | 2023-01-06 | 2024-02-20 | 太原理工大学 | Hollow flower-ball-shaped Z-shaped heterojunction BCN/Bi 2 O 2 [BO 2 (OH)]Photocatalyst |
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