CN111905773A - Preparation method of square bismuth oxyhalide photocatalyst - Google Patents
Preparation method of square bismuth oxyhalide photocatalyst Download PDFInfo
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- CN111905773A CN111905773A CN202010838353.4A CN202010838353A CN111905773A CN 111905773 A CN111905773 A CN 111905773A CN 202010838353 A CN202010838353 A CN 202010838353A CN 111905773 A CN111905773 A CN 111905773A
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- 239000011941 photocatalyst Substances 0.000 title claims abstract description 40
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 39
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims abstract description 9
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 7
- 150000002367 halogens Chemical class 0.000 claims abstract description 7
- 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 7
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000011592 zinc chloride Substances 0.000 claims abstract description 4
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims description 6
- KKMOSYLWYLMHAL-UHFFFAOYSA-N 2-bromo-6-nitroaniline Chemical compound NC1=C(Br)C=CC=C1[N+]([O-])=O KKMOSYLWYLMHAL-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 230000001699 photocatalysis Effects 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 13
- 229940073609 bismuth oxychloride Drugs 0.000 description 12
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 10
- 229940012189 methyl orange Drugs 0.000 description 10
- CBACFHTXHGHTMH-UHFFFAOYSA-N 2-piperidin-1-ylethyl 2-phenyl-2-piperidin-1-ylacetate;dihydrochloride Chemical compound Cl.Cl.C1CCCCN1C(C=1C=CC=CC=1)C(=O)OCCN1CCCCC1 CBACFHTXHGHTMH-UHFFFAOYSA-N 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- OZKCXDPUSFUPRJ-UHFFFAOYSA-N oxobismuth;hydrobromide Chemical compound Br.[Bi]=O OZKCXDPUSFUPRJ-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000008139 complexing agent Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 2
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- SWLVFNYSXGMGBS-UHFFFAOYSA-N ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229940107816 ammonium iodide Drugs 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000005556 structure-activity relationship Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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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
- B01J27/06—Halogens; Compounds thereof
-
- 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
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- 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
- C02F2101/40—Organic compounds containing sulfur
-
- 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 Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention provides a preparation method of a square bismuth oxyhalide photocatalyst, which comprises the following steps: adding a certain amount of bismuth nitrate, citric acid and halogen source (zinc chloride, sodium bromide, potassium iodide and the like) into deionized water successively, stirring uniformly continuously, and pouring the mixture into a hydrothermal reaction kettle for hydrothermal reaction. After the reaction is finished, the square bismuth oxyhalide photocatalyst is obtained after filtering, washing and drying. The bismuth oxyhalide photocatalyst material prepared by the invention has the advantages of specific square shape, good photocatalytic performance, simple synthesis process, low price of raw materials, no pollution, controllable process, good repeatability and the like.
Description
Technical Field
The invention relates to the field of photocatalyst preparation, in particular to a preparation method of square bismuth oxyhalide.
Background
With the development of industrialization, canThe problems of source shortage and environmental pollution become two major problems facing the development of the world today. The photocatalysis technology can use renewable solar energy as an energy source to carry out various green reactions such as water decomposition hydrogen production, carbon dioxide reduction, nitrogen fixation, pollutant degradation and the like, and is one of green new energy technologies with great application prospects. Bismuth oxyhalide (BiOX, X = Cl, Br, I) is a commonly used photocatalyst for water decomposition, pollutant degradation, CO decomposition2Reduction, nitrogen fixation and the like are one of hot materials for photocatalytic research at home and abroad at present. The reactivity of the catalytic material is closely related to the surface structure (atomic arrangement, coordination environment) determined by the shape (size, shape, exposed crystal face, etc.) of the microstructure of the material. The morphology of the material is regulated and controlled, so that a specific active crystal face can be selectively exposed, more surface active sites are exposed, the species adsorption and catalysis rate are accelerated, and the catalytic reaction activity is greatly improved (J. Am. chem. Soc., 2013, 135 (44), 16284-. Therefore, the controlled preparation of photocatalysts with specific morphologies is an extremely important research direction for the BiOX research.
Past researchers have affected the morphology of the final product by adding surfactants such as polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), polyethylene glycol (PEG), or methods of pH control. However, the prepared BiOX is mostly similar to a circular nanosheet, a flower-shaped structure and the like, so that the further improvement of the BiOX performance is restricted, the establishment of a structure-activity relationship is not facilitated, and the further application of the BiOX in the field of photocatalysis is hindered.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention aims to provide a preparation method of a bismuth oxyhalide photocatalyst, which can effectively regulate and control the morphology and has a simple preparation process. Citric acid is generally used as a complexing agent for metal ions to reduce the reactivity and retard the growth of inorganic grains, thereby achieving the purpose of regulating the morphology of the inorganic material. (Zhang, Kun, et al, "bismuth sub-microcystals induced by Citric acid and the high photocatalytic activity." crystalline Growth & Design 12.2 (2012): 793-) -803.; Xu, Yue, et al, "Citric acid modulated electrochemical synthesis and photocatalytic reaction of BiOCl nanoplatates with exposed {001} facets." Dalton interactions 43.2 (2014): 479-) -485.) this invention utilizes Citric acid as a complexing agent and a dispersing agent in combination with a hydrothermal process to achieve morphological and dimensional control of the precursor and thus control of nucleation and Growth of bismuth oxyhalide, achieving morphological and size control of the nano bismuth oxyhalide to improve its photocatalytic performance.
In order to achieve the purpose, the invention adopts the following technical scheme, which comprises the following specific steps:
(1) mixing a certain amount of bismuth source and citric acid in deionized water, uniformly stirring, adding halogen source, and placing the mixed solution in a reaction kettle for hydrothermal reaction at 100-200 ℃ for 2-24 hours. After the reaction is finished, the square bismuth oxyhalide nano photocatalyst can be prepared after filtering, washing and drying.
(2) In the scheme, the bismuth source is bismuth nitrate or bismuth citrate, and the halogen source is any one of ammonium chloride, ammonium bromide or ammonium iodide. The atomic ratio of the bismuth source to the halogen source is 1:1-1: 4. The mass ratio of the bismuth source to the citric acid in the deionized water is 200:10:1-20:1: 1. The powder photocatalyst prepared by the method is bismuth oxyhalide.
Citric acid as a complexing agent is a sufficient condition for synthesizing the square bismuth oxyhalide nano photocatalyst, and when the solution does not contain citric acid, the prepared solution is in a wafer-like shape, so that the square bismuth oxyhalide nano photocatalyst cannot be obtained.
(3) The test parameters for photocatalytic degradation of methyl orange are as follows: the concentration of the methyl orange solution is 1 x 10-5 mol/L, and the using amount of the catalyst is 0.5 g/L. The solution was irradiated with a 300W xenon lamp simulated sunlight as an irradiation light source at an intensity of one sun. The methyl orange solution containing the catalyst was stirred in the dark for 60min before light irradiation to allow the photocatalyst to reach adsorption-desorption equilibrium. And taking the solution at different times, centrifuging, taking the supernatant, and measuring the absorbance of the solution to determine the concentration of the solution of the undegraded methyl orange. Maximum absorption of methyl orange solutionThe wavelength is 464 nm.
The invention has the advantages that:
1. the citric acid is used as a complexing agent and a dispersing agent to control the nucleation and the growth of the bismuth oxyhalide, thereby realizing the regulation and control of the shape and the size of the cubic nano bismuth oxyhalide. Under the excitation of simulated sunlight, the decoloration rate of the square nano bismuth oxyhalide serving as a photocatalyst to methyl orange within one hour can reach 98 percent at most. Therefore, the square nano bismuth oxyhalide has good photocatalytic performance.
2. The cubic nano bismuth oxyhalide grown by the hydrothermal method has simple preparation process, low price of raw materials and no pollution.
Drawings
FIG. 1 shows the X-ray diffraction pattern of the bismuth oxychloride photocatalyst prepared in example 1.
FIG. 2 shows the X-ray diffraction pattern of the bismuth oxybromide photocatalyst prepared in example 2.
FIG. 3 shows the X-ray diffraction pattern of the bismuth oxyiodide photocatalyst obtained in example 3.
FIG. 4 is a scanning electron microscope photograph of the bismuth oxychloride photocatalyst prepared in example 1.
FIG. 5 is a scanning electron microscope photograph of the bismuth oxybromide photocatalyst prepared in example 2.
FIG. 6 is a scanning electron microscope photograph of the bismuth oxyiodide photocatalyst prepared in example 3.
FIG. 7 is a scanning electron microscope photograph of the bismuth oxyiodide photocatalyst prepared in example 4.
FIG. 8 is a graph showing the kinetics of methyl orange degradation for bismuth oxyhalide materials prepared in examples 1,2, and 3.
FIG. 9 shows a comparison of the kinetics of degradation of methyl orange by the bismuth oxychloride photocatalyst in a square shape and in a disc shape.
Detailed Description
Example 1
Sequentially adding 1g of bismuth nitrate and 0.5g of citric acid into 20g of deionized water, uniformly stirring by using a magnetic stirrer, adding 0.42g of zinc chloride, uniformly stirring, and finally transferring the mixed solution into a reaction kettle for hydrothermal reaction at 180 ℃ for 6 hours. After the reaction is finished, the square bismuth oxychloride nano photocatalyst can be prepared after filtering, washing and drying.
Example 2
Sequentially adding 1g of bismuth nitrate and 0.5g of citric acid into 20g of deionized water, uniformly stirring by using a magnetic stirrer, adding 0.64g of sodium bromide into the mixture, uniformly stirring, and finally transferring the mixed solution into a reaction kettle for hydrothermal reaction at the reaction temperature of 180 ℃ for 6 hours. After the reaction is finished, the square bismuth oxybromide nano photocatalyst can be prepared after filtering, washing and drying.
Example 3
Sequentially adding 1g of bismuth nitrate and 0.8g of citric acid into 20g of deionized water, uniformly stirring by using a magnetic stirrer, adding 1g of potassium iodide, uniformly stirring, and finally transferring the mixed solution into a reaction kettle for hydrothermal reaction at the reaction temperature of 180 ℃ for 12 hours. After the reaction is finished, the square bismuth oxyiodide nano photocatalyst can be prepared by filtering, washing and drying.
Example 4
Sequentially adding 1g of bismuth nitrate and 0g of citric acid into 20g of deionized water, uniformly stirring by using a magnetic stirrer, adding 0.42g of zinc chloride, uniformly stirring, and finally transferring the mixed solution into a reaction kettle for hydrothermal reaction at the temperature of 180 ℃ for 6 hours. After the reaction is finished, the wafer-like bismuth oxychloride photocatalyst is prepared by filtering, washing and drying.
The attached figures 1,2 and 3 show the X-ray diffraction pattern of the prepared photocatalyst, the spectral lines of the X-ray diffraction pattern completely correspond to the characteristic diffraction peaks of bismuth oxyhalide one by one, and the prepared materials are proved to be bismuth oxychloride, bismuth oxybromide and bismuth oxyiodide respectively. Fig. 4,5 and 6 are scanning electron microscope pictures of the prepared bismuth oxyhalide photocatalyst, from which it can be clearly seen that the morphologies of the bismuth oxychloride, bismuth oxybromide and bismuth oxyiodide photocatalyst are all square. FIG. 7 is a photograph of the resulting wafer-like bismuth oxychloride photocatalyst without the addition of citric acid, and the effect of citric acid on the morphology can be clearly compared by comparing FIG. 4 with FIG. 7. FIG. 8 is a dynamic curve of the degradation of methyl orange by a square bismuth oxyhalide photocatalyst. As can be seen from the figure, under the same conditions, bismuth oxychloride has the best effect of degrading methyl orange, bismuth oxybromide has the second best effect, and bismuth oxyiodide has the worst effect. FIG. 9 is a dynamic curve of the degradation of methyl orange by the bismuth oxychloride photocatalyst in the shape of a square block and a similar disc. As can be seen from the figure, the effect of degrading methyl orange by the square bismuth oxychloride under the same conditions is obviously better than that of the wafer-like bismuth oxychloride catalyst.
The above description is only an illustrative example of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that the present invention may be modified and changed in that the substrate is replaced and other materials are added to the raw material to perform material doping or to prepare a composite thereof. All such modifications and alterations should occur to others without departing from the spirit and scope of the present invention.
Claims (6)
1. A preparation method of a square bismuth oxyhalide photocatalyst is characterized by comprising the following steps: mixing a bismuth source and citric acid in deionized water, uniformly stirring, adding a halogen source, and placing the mixed solution in a reaction kettle for hydrothermal reaction to obtain the square bismuth oxyhalide nano photocatalyst.
2. The method of preparing a bismuth oxyhalide photocatalyst as claimed in claim 1, wherein: the bismuth source comprises bismuth nitrate or bismuth citrate.
3. The method of preparing a bismuth oxyhalide photocatalyst as claimed in claim 1, wherein: the halogen source comprises zinc chloride, sodium bromide or potassium iodide.
4. The method of preparing a bismuth oxyhalide photocatalyst as claimed in claim 1, wherein: the hydrothermal reaction temperature is 100-200 ℃, and the reaction time is 2-24 hours.
5. The method of preparing a bismuth oxyhalide photocatalyst as claimed in claim 1, wherein: the atomic ratio of the bismuth source to the halogen source is 1:1-1: 4.
6. The method of preparing a bismuth oxyhalide photocatalyst as claimed in claim 1, wherein: the mass ratio of the bismuth source to the citric acid in the deionized water is 200:10:1-20:1: 1.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113213508A (en) * | 2021-04-27 | 2021-08-06 | 金华市浙工大创新联合研究院 | Method for synthesizing ammonia through photocatalysis |
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| CN107215894A (en) * | 2017-06-09 | 2017-09-29 | 北京华腾新材料股份有限公司 | A kind of heat-insulated granules of pigments of bismoclite near-infrared high reflection and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107215894A (en) * | 2017-06-09 | 2017-09-29 | 北京华腾新材料股份有限公司 | A kind of heat-insulated granules of pigments of bismoclite near-infrared high reflection and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213508A (en) * | 2021-04-27 | 2021-08-06 | 金华市浙工大创新联合研究院 | Method for synthesizing ammonia through photocatalysis |
| CN113213508B (en) * | 2021-04-27 | 2022-08-12 | 金华市浙工大创新联合研究院 | Method for synthesizing ammonia through photocatalysis |
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