CN111330600A - Preparation method of cuprous oxide composite material with porous structure - Google Patents
Preparation method of cuprous oxide composite material with porous structure Download PDFInfo
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- CN111330600A CN111330600A CN202010178348.5A CN202010178348A CN111330600A CN 111330600 A CN111330600 A CN 111330600A CN 202010178348 A CN202010178348 A CN 202010178348A CN 111330600 A CN111330600 A CN 111330600A
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- sodium sulfite
- cuprous oxide
- copper sulfate
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- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 title claims abstract description 63
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229940112669 cuprous oxide Drugs 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 127
- 239000000243 solution Substances 0.000 claims abstract description 111
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 64
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 60
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 50
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000005406 washing Methods 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 18
- 230000032683 aging Effects 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 30
- 238000005303 weighing Methods 0.000 claims description 16
- 238000000967 suction filtration Methods 0.000 claims description 15
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 239000010949 copper Substances 0.000 abstract description 26
- 239000000463 material Substances 0.000 abstract description 14
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 20
- 230000001699 photocatalysis Effects 0.000 description 11
- 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 5
- 229940012189 methyl orange Drugs 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052927 chalcanthite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000001507 sample dispersion Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/053—Sulfates
- B01J27/055—Sulfates with alkali metals, copper, gold or silver
-
- B01J35/39—
Abstract
The invention discloses a preparation method of a cuprous oxide composite material with a porous structure, which comprises the steps of respectively preparing a copper sulfate solution and a sodium sulfite solution with the concentrations of 0.15-0.3 mol/L, and adding the copper sulfate solution into the sodium sulfite solution under the conditions of heating and stirring to obtain a mixed solution; aging the mixed solution, and then carrying out solid-liquid separation; washing and drying the solid after solid-liquid separation to obtain the cuprous oxide composite material with the porous structure; the invention can generate a novel cuprous oxide composite material [ Cu ] with a porous structure by mixing and reacting a copper sulfate solution and a sodium sulfite solution and controlling the reaction process2O@Cu3(SO3)2·(H2O)2The chemical composition and the appearance of the composite material are different from those of the materials obtained by taking copper sulfate and sodium sulfite as raw materials in the prior art, and the pH value of the reaction solution does not need to be continuously adjusted in the preparation process of the composite material, so that the industrial production process condition of the composite material is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of cuprous oxide composite photocatalytic materials, and particularly relates to a preparation method of a cuprous oxide composite material with a porous structure.
[ background of the invention ]
The cuprous oxide semiconductor has the band gap width of about 2eV, can effectively absorb visible light in sunlight and can effectively generate a photon-generated carrier under the irradiation of the visible light, has no toxicity, and has wide application prospects in the fields of solar cells, photocatalytic environmental pollutant degradation and the like, but the application prospect is greatly limited due to the lower photoelectric conversion efficiency.
The cuprous oxide composite material can well improve the photocatalytic capacity. Some methods for preparing cuprous oxide composite materials are proposed in the prior documents, such as: 1. guo Ping and Jade. Preparing by reducing copper sulfate with sodium sulfite; jiangxi chemical industry, 2008(1), 52-53. 2. Zhang Ping, Liu Heng and Li Da Cheng. The superfine cuprous oxide powder, Sichuan nonferrous metal, 1998(2), 16-18 is prepared by sodium sulfite reduction method. 3. Yanshenghu, Tang widening, Zuoxintao. A new technology for preparing cuprous oxide powder by using a sodium sulfite reduction method, Jinchuan technology, 2012(3) 27-29. And the like.
The catalytic performance of the heterogeneous solid catalytic material is mainly related to the surface composition, morphology, the number and activity of active sites and the like of the material. The cuprous oxide composite material can improve the photocatalytic capacity by changing the surface composition, morphology, surface area and the number of active sites, improving the active center and the like. Therefore, the cuprous oxide composite material makes up the defects of cuprous oxide, improves the photocatalytic performance of the cuprous oxide and widens the application field of the cuprous oxide.
However, the above-mentioned technology requires strict control of the pH of the reaction solution during the preparation process, and the pH mentioned in the literature does not exceed 5.5 at most, i.e. the pH needs to be adjusted in real time during the experimental reaction process, which is a very difficult operation process, because the pH is constantly dynamically changed during the experimental reaction process, and the pH of the reaction solution must be monitored and continuously adjusted during the reaction process in real time, which is difficult to be realized for industrial production.
[ summary of the invention ]
The invention aims to provide a preparation method of a cuprous oxide composite material with a porous structure, which does not need to continuously adjust the pH value of a solution in the preparation process, reduces the process conditions of industrial production, and ensures that the particle surface of the prepared composite material is composed of [ Cu ]2O ] and [ Cu ]3(SO3)2·(H2O)2Is composed of [ Cu ] together, when catalyzing2O ] and [ Cu ]3(SO3)2·(H2O)2The photocatalysis performance of the cuprous oxide is improved under the synergistic action.
The invention adopts the following technical scheme: a preparation method of a cuprous oxide composite material with a porous structure comprises the following steps:
respectively preparing a copper sulfate solution and a sodium sulfite solution with the concentration of 0.15-0.3 mol/L;
adding a copper sulfate solution into a sodium sulfite solution under the condition of heating and stirring to obtain a mixed solution;
aging the mixed solution, and then carrying out solid-liquid separation;
and washing and drying the solid after solid-liquid separation to obtain the cuprous oxide composite material with the porous structure.
Further, the copper sulfate solution and the sodium sulfite solution are the same in the amount concentration of the substances.
Further, the volume of the sodium sulfite solution is greater than the volume of the copper sulfate solution.
Further, when the copper sulfate solution is added to the sodium sulfite solution, the temperature of the sodium sulfite solution is maintained at 80-84 ℃.
Further, the specific method of solid-liquid separation is suction filtration.
Further, the washing and drying of the solid after the solid-liquid separation comprises:
the solid was washed 3 times with pure water, and the washed solid was dried at 100 ℃.
Further, the method comprises:
weighing CuSO4·5H2Dissolving O in pure water to prepare a copper sulfate solution with the concentration of 0.3 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.3 mol/L;
adding a sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 81 ℃ and maintaining the reaction temperature;
and adding a copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, carrying out suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
Further, the method comprises:
weighing CuSO4·5H2Dissolving O in pure water to prepare a copper sulfate solution with the concentration of 0.2 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.2 mol/L;
adding a sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 82 ℃ and maintaining the reaction temperature;
and adding a copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, carrying out suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
Further, the method comprises:
weighing CuSO4·5H2Dissolving O in pure water to prepare a copper sulfate solution with the concentration of 0.15 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.15 mol/L;
adding a sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 83-84 ℃, and keeping the reaction temperature;
and adding a copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, carrying out suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
The invention has the beneficial effects that: the invention can generate a novel cuprous oxide composite material [ Cu ] with a porous structure by mixing and reacting a copper sulfate solution and a sodium sulfite solution and controlling the reaction process2O@Cu3(SO3)2·(H2O)2The chemical composition and the appearance of the composite material are different from those of the materials obtained by taking copper sulfate and sodium sulfite as raw materials in the prior art, and the pH value of the reaction solution does not need to be continuously adjusted in the preparation process of the composite material, so that the industrial production process condition of the composite material is reduced.
[ description of the drawings ]
FIG. 1 shows a cuprous oxide composite [ Cu ] with porous structure in an embodiment of the present invention2O@Cu3(SO3)2·(H2O)2The preparation process flow chart;
FIG. 2 shows a cuprous oxide composite [ Cu ] with porous structure in an embodiment of the present invention2O@Cu3(SO3)2·(H2O)2XRD pattern of the sample;
FIG. 3 shows a cuprous oxide composite [ Cu ] with porous structure in an embodiment of the present invention2O@Cu3(SO3)2·(H2O)2SEM images of sample dispersion;
FIG. 4 shows a cuprous oxide composite [ Cu ] with porous structure in an embodiment of the present invention2O@Cu3(SO3)2·(H2O)2SEM porous structure diagram of sample.
FIG. 5 shows a cuprous oxide composite [ Cu ] with porous structure in an embodiment of the present invention2O@Cu3(SO3)2·(H2O)2A catalytic degradation spectrum of a cuprous oxide material obtained by reduction with glucose on methyl orange under visible light.
[ detailed description ] embodiments
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a preparation method of a cuprous oxide composite material with a porous structure, which comprises the following steps of:
respectively preparing a copper sulfate solution and a sodium sulfite solution with the concentration of 0.15-0.3 mol/L; adding a copper sulfate solution into a sodium sulfite solution under the condition of heating and stirring to obtain a mixed solution; aging the mixed solution, and then carrying out solid-liquid separation; and washing and drying the solid after solid-liquid separation to obtain the cuprous oxide composite material with the porous structure.
The invention can generate a novel cuprous oxide composite material [ Cu ] with a porous structure by mixing and reacting a copper sulfate solution and a sodium sulfite solution and controlling the reaction process2O@Cu3(SO3)2·(H2O)2The chemical composition and the appearance of the composite material are different from those of the materials obtained by taking copper sulfate and sodium sulfite as raw materials in the prior art, and the pH value of the reaction solution does not need to be continuously adjusted in the preparation process of the composite material, so that the industrial production process condition of the composite material is reduced.
In the present invention, the copper sulfate solution and the sodium sulfite solution are the same in mass concentration. The volume of the sodium sulfite solution is larger than that of the copper sulfate solution (the volume ratio of the sodium sulfite solution to the copper sulfate solution is preferably 1.5:1), and the copper sulfate addition speed is lower in the invention, so that the sodium sulfite in the solution is greatly excessive, one part is directly reduced to cuprous oxide, the other part is reduced to a complex structure, and the particles are smaller and are mutually agglomerated.
In addition, the copper sulfate solution is added at a slow rate due to the excess of sodium sulfite, so that the solution is guaranteed to be weakly alkaline when the copper sulfate solution is added to the sodium sulfite solution. The reaction is carried out in a weakly alkaline environment, Cu2+One part of the ions is reduced to directly generate cuprous oxide, and the other part of the ions is reduced to Cu+Post-ionized and unreduced Cu2+Ions and [ SO3]2-Formation of Cu3(SO3)2·(H2O)2Cu produced simultaneously2O and Cu3(SO3)2·(H2O)2The materials are mutually adsorbed and agglomerated in the solution due to the larger surface to reduce the surface energy thereof, and finally the composite material [ Cu ] with a porous structure is formed2O@Cu3(SO3)2·(H2O)2】。
Specifically, when the copper sulfate solution is added into the sodium sulfite solution, the temperature of the sodium sulfite solution is kept at 80-84 ℃. The specific method of solid-liquid separation is selected as suction filtration, and the suction filtration mode is more suitable for large-scale industrial application and can improve the yield.
As a specific embodiment, the following method is adopted for washing and drying the solid after solid-liquid separation:
the solid was washed 3 times with pure water, and the washed solid was dried at 100 ℃.
Composite material [ Cu ] with porous structure obtained by using method2O@Cu3(SO3)2·(H2O)2The particle size is large, the washing is easy, the loss of the washing is avoided, and the industrialization is facilitated. The whole process is simple to operate, raw materials can be utilized to the maximum extent, the raw materials are saved, the reaction end point is easy to control, meanwhile, the pH value of the solution does not need to be considered and controlled in the whole process, the process difficulty is greatly reduced, other raw materials are not introduced, the environmental pollution is reduced, and the productivity is effectively improved.
Example 1:
weigh 37.6g of CuSO4·5H2O was dissolved in pure water to prepare 500mL of a solution (copper sulfate concentration: 0.3 mol/L).
28.7g Na was weighed2SO3Dissolved in pure water to prepare 750mL of solution (the concentration of sodium sulfite is 0.3 mol/L).
Adding a sodium sulfite solution into a 2L beaker, mechanically stirring, preheating to 80 ℃, adding a copper sulfate solution under the condition of keeping the reaction temperature, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with a porous structure.
Example 2:
weigh 37.6g of CuSO4·5H2Dissolving O in pure water to prepare 500mL of copper sulfate solution with the concentration of 0.3 mol/L;
28.7g Na was weighed2SO3Dissolving in pure water to prepare 750mL of sodium sulfite solution with the concentration of 0.3 mol/L;
adding a sodium sulfite solution into a 2L beaker, mechanically stirring, preheating to 81 ℃ and maintaining the reaction temperature;
and adding a copper sulfate solution into the sodium sulfite solution, finishing adding within 40min, aging for 25min, carrying out suction filtration, washing for 4 times by using pure water, and drying at 95 ℃ to obtain the cuprous oxide composite material with the porous structure.
Example 3:
25.1g of CuSO4 & 5H2O was weighed out and dissolved in pure water to prepare 500mL of a solution (copper sulfate concentration: 0.2 mol/L).
19.1g of Na2SO3 was weighed out and dissolved in pure water to prepare a 750mL solution (sodium sulfite concentration: 0.2 mol/L).
Adding a sodium sulfite solution into a 2L beaker, mechanically stirring, preheating to 82 ℃, adding a copper sulfate solution under the condition of keeping the reaction temperature, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with a porous structure.
Example 4:
weighing 18.8g of CuSO4·5H2Dissolving O in pure water to prepare 500mL solution (the concentration of copper sulfate is 0.15 mol/L);
weighing 14.3g Na2SO3Dissolving in pure water to prepare 750mL solution (the concentration of sodium sulfite is 0.15 mol/L);
adding a sodium sulfite solution into a 2L beaker, mechanically stirring, preheating to 83 ℃, adding a copper sulfate solution under the condition of keeping the reaction temperature, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with a porous structure.
Example 5:
weighing 18.8g of CuSO4·5H2Dissolving O in pure water to prepare 500mL of copper sulfate solution with the concentration of 0.15 mol/L;
weighing 14.3g Na2SO3Dissolved in pure water to prepare 750mL of solution with the concentration of0.15mol/L sodium sulfite solution;
adding a sodium sulfite solution into a 2L beaker, mechanically stirring, preheating to 84 ℃ and keeping the reaction temperature;
and adding a copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, carrying out suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
Referring to FIG. 2, which is an XRD pattern of the best mode 4 of the present invention, the data of the peaks on the left side, which is found by comparing PDF cards showing the peak positions of diffraction peaks, is identical to the data of PDF card number 11-0240, which is classified as Cu3(SO3)2·(H2O)2Has diffraction peaks having crystal plane indices of (-101), (002) and (112), respectively.
Compared with PDF card, the peak data on the right side is consistent with the data of PDF card number 99-0041 and can be attributed to cubic phase Cu2The diffraction peaks and the plane indices of O are (111), (200) and (220), respectively. Thus, it was confirmed that the composition of the sample obtained in this example was Cu2O@Cu3(SO3)2·(H2O)2The composite material of (1).
Referring to fig. 3, which is an SEM image of the dispersibility of the sample in example 4 of the present invention, it can be seen that the sample is an aggregate agglomerated to less than 25 μm. Referring to fig. 4, which is a SEM porous structure diagram of a sample in example 4 of the present invention, it can be seen that the sample is a porous structure material.
The invention not only reduces the technical problem that the process conditions are difficult to control in the implementation process of the technology, but also prepares the novel cuprous oxide composite material with the porous structure, which is easy to industrialize and has excellent photocatalytic performance, improves the photocatalytic performance of the cuprous oxide, and simultaneously, due to the participation of sulfite, not only enhances the photocatalytic performance of the cuprous oxide material, but also greatly reduces the content of copper in the catalytic material and saves the cost. The surface of the porous cuprous oxide composite material particle related by the invention is composed of [ Cu ]2O ] and [ Cu ]3(SO3)2·(H2O)2Is composed of [ Cu ] together, when catalyzing2O ] and [ Cu ]3(SO3)2·(H2O)2The synergistic effect (as can be seen in fig. 2) improves the photocatalytic performance of cuprous oxide. The method has the advantages of simple process, convenient operation, easily obtained raw materials, simple process flow and easy washing of the obtained product.
Through a methyl orange visible light photocatalytic degradation experiment under the same conditions, as shown in fig. 5, the cuprous oxide composite material [ Cu ] with a porous structure obtained in the embodiment of the invention2O@Cu3(SO3)2·(H2O)2The photocatalytic degradation rate of methyl orange reaches 82.6 percent when the material is illuminated for 180min, and the photocatalytic degradation rate of methyl orange is only 67.7 percent when the cuprous oxide material obtained by reducing fresh copper hydroxide by glucose is illuminated for 180 min. Therefore, the cuprous oxide composite material [ Cu ] with a porous structure obtained in the embodiment of the invention2O@Cu3(SO3)2·(H2O)2The capacity of degrading methyl orange by photocatalysis is obviously superior to that of a common cuprous oxide material.
Claims (9)
1. The preparation method of the cuprous oxide composite material with the porous structure is characterized by comprising the following steps of:
respectively preparing a copper sulfate solution and a sodium sulfite solution with the concentration of 0.15-0.3 mol/L;
adding the copper sulfate solution into the sodium sulfite solution under the condition of heating and stirring to obtain a mixed solution;
aging the mixed solution and then carrying out solid-liquid separation;
and washing and drying the solid after solid-liquid separation to obtain the cuprous oxide composite material with the porous structure.
2. The method for preparing a cuprous oxide composite material with porous structure according to claim 1, wherein the amount concentration of substance of copper sulfate solution and sodium sulfite solution is the same.
3. The method of claim 3, wherein the volume of the sodium sulfite solution is greater than the volume of the copper sulfate solution.
4. The method for preparing cuprous oxide composite material with porous structure according to claim 2 or 3, wherein when said copper sulfate solution is added into said sodium sulfite solution, the temperature of said sodium sulfite solution is maintained at 80-84 ℃.
5. The preparation method of the cuprous oxide composite material with a porous structure, according to claim 4, wherein the specific solid-liquid separation method is suction filtration.
6. The method for preparing the cuprous oxide composite material with a porous structure according to claim 2 or 3, wherein the washing and drying the solid after solid-liquid separation comprises:
the solid was washed 3 times with pure water, and the washed solid was dried at 100 ℃.
7. A method of producing a porous cuprous oxide composite material as claimed in claim 1, wherein said method comprises:
weighing CuSO4·5H2Dissolving O in pure water to prepare a copper sulfate solution with the concentration of 0.3 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.3 mol/L;
adding the sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 81 ℃ and maintaining the reaction temperature;
and adding the copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
8. A method of producing a porous cuprous oxide composite material as claimed in claim 1, wherein said method comprises:
weighing CuSO4 & 5H2O, dissolving in pure water to prepare a copper sulfate solution with the concentration of 0.2 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.2 mol/L;
adding the sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 82 ℃ and maintaining the reaction temperature;
and adding the copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
9. A method of producing a porous cuprous oxide composite material as claimed in claim 1, wherein said method comprises:
weighing CuSO4·5H2Dissolving O in pure water to prepare a copper sulfate solution with the concentration of 0.15 mol/L;
weighing Na2SO3Dissolving in pure water to prepare a sodium sulfite solution with the concentration of 0.15 mol/L;
adding the sodium sulfite solution into a reaction vessel, mechanically stirring, preheating to 83-84 ℃, and keeping the reaction temperature;
and adding the copper sulfate solution into the sodium sulfite solution, finishing adding within 30min, aging for 30min, performing suction filtration, washing for 3 times by using pure water, and drying at 100 ℃ to obtain the cuprous oxide composite material with the porous structure.
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