CN114988458A - Method for preparing ZnS crystal based on control of morphology of copper-based catalyst - Google Patents
Method for preparing ZnS crystal based on control of morphology of copper-based catalyst Download PDFInfo
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- 239000010949 copper Substances 0.000 title claims abstract description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 50
- 239000003054 catalyst Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000013078 crystal Substances 0.000 title claims abstract description 30
- 238000005303 weighing Methods 0.000 claims abstract description 65
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000011259 mixed solution Substances 0.000 claims abstract description 39
- 239000008367 deionised water Substances 0.000 claims abstract description 38
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000002425 crystallisation Methods 0.000 claims abstract description 32
- 230000008025 crystallization Effects 0.000 claims abstract description 32
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 claims abstract description 28
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 29
- 238000005406 washing Methods 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 14
- 239000002105 nanoparticle Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000000527 sonication Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000006722 reduction reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 238000000231 atomic layer deposition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/08—Sulfides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a method for preparing ZnS crystal based on control of morphology of a copper-based catalyst, which comprises the following steps: s1: preparing an article weighing platform with high precision and deionized water; s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution; s3: carrying out ultrasonic treatment on the S2; s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle; s5: and waiting for the mixed solution in the crystallization kettle in S4 at high temperature to crystallize. The preparation process of the copper-based catalyst, including the single (double) metal catalyst, is complex and harsh. As the active sites, copper is distributed in both bulk phase and surface, and the chemical utilization rate is not high. In addition, the copper-based catalyst has poor shape controllability, so that the carbon dioxide electrochemical reduction reaction of the copper-based catalyst is influenced.
Description
Technical Field
The invention relates to the technical field of ZnS crystal preparation capable of controlling the morphology of a copper-based catalyst, in particular to a method for preparing ZnS crystals based on controlling the morphology of a copper-based catalyst.
Background
Under the large background of a double-carbon target, carbon dioxide electrochemical reduction (CO2RR) into ethylene, ethanol and C2+ liquid fuel can reduce carbon emission and store renewable energy, and the method is an important chemical technology integrating carbon capture, utilization and storage. Cu is recognized as the most effective catalyst for converting CO2 into multi-carbon products, but its low efficiency and poor stability are the core problems to be solved. In CO2RR, the coupling of two CO to form OCCO is a key step in the formation of C2+ product. To increase the CO concentration around the Cu active sites, JounyandLi et al introduced CO separately into the CO2RR reaction system. It is also known to introduce a second active component (Au, Ag, Zn) during the preparation of the copper catalyst to obtain a tandem catalyst. Different research groups respectively adopt an atomic layer deposition method, a reverse micelle encapsulation method and an ion exchange method to successively develop a plurality of CO2RR high-efficiency series catalysts.
With respect to copper catalysts, the primary concern has been copper oxide, bimetallic copper, cu (n) coated carbon materials. Recent copper-based catalytic material research has made new progress, mainly focusing on the modulation of copper coordination environment and structure. In a CO atmosphere, a copper catalyst with a ladder structure is synthesized by an Zheng Gunn peak team of the university of double denier, and the current density and the Faraday efficiency of C2+ alcohol are respectively 100mA/cm2 and 70 percent. A Grubbs team of California's institute of technology prepares a copper electrode modified by three organic components by an open-loop disproportionation method, the porosity and the hydrophobic property of the copper electrode are improved, the capture of CO2 and the mass transfer of CO2 on the surface of the electrode are enhanced, the copper electrode is protected, the stability of the copper electrode is improved, and the Faraday efficiencies of ethylene and C2+ respectively reach 55% and 77%. The GongweiWang team, Wuhan university, covered a thin layer of NxC on the surface of a copper catalyst, enriched and activated CO2 around the copper in the form of a N-CO2 bond, with a total Faraday efficiency of ethylene and ethanol as high as 72%. At the same time, the stability of the copper catalyst is improved due to the protection of NxC. The university of California los Angeles school Huang Yi team prepared copper nanowires with surfaces rich in steps, the selectivity and stability of ethylene were significantly improved, and the faradaic efficiency of ethylene was not less than 70% in 200 hours.
According to the above, in the experiment combined with the existing synthesis of ZnS nanoparticles, the preparation process of the copper-based catalyst, including the single (double) metal catalyst, is complicated and the conditions are severe. As the active sites, copper is distributed in both bulk phase and surface, and the chemical utilization rate is not high. In addition, the copper-based catalyst has poor shape controllability, so that the carbon dioxide electrochemical reduction reaction of the copper-based catalyst is influenced. Therefore, a method for preparing ZnS crystal based on controlling the morphology of the copper-based catalyst is provided.
Disclosure of Invention
The invention aims to provide a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle at high temperature in the waiting S4;
s6: cooling to room temperature after crystallization in S5;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Preferably, the weight of the zinc nitrate hexahydrate in the S2 is 2.44 g.
Preferably, the weight of thiourea in S2 is 1.27 g.
Preferably, the sonication time in S3 is 30 minutes.
Preferably, the crystallization temperature in S5 is controlled to 180 ℃.
Preferably, the crystallization waiting time in S5 is controlled to be 18 hours.
Preferably, the drying temperature in S8 is controlled to be 100 ℃.
Preferably, the washing processes of S9 and S10 need to be repeated three times, respectively.
The invention provides a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst. The method has the following beneficial effects:
the invention can make copper disperse on limited exchange group in single atom form by ion exchange on ZnS crystal surface, thereby obtaining effective utilization. Finally, the appearance of the ZnS crystal is kept unchanged in the whole replacement process, so that different appearances of the ZnS crystal are designed, and the copper-based catalyst conforming to the electrochemical reduction reaction of carbon dioxide is obtained.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The following examples, given by way of illustration, are intended to illustrate the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: performing ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 20.5 ℃;
s7: centrifuging S6;
s8: drying S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example two:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 21 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example three:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 21.5 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example four:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 22 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example five:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 22.5 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example six:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 23 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example seven:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 23.5 ℃;
s7: centrifuging S6;
s8: drying S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example eight:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 24 ℃;
s7: centrifuging S6;
s8: drying S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example nine:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: performing ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle in the waiting S4 at high temperature;
s6: crystallizing in S5, and cooling to room temperature of 24.5 ℃;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
Example ten:
a method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst comprises the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle at high temperature in the waiting S4;
s6: crystallizing in S5, and cooling to room temperature of 25 ℃;
s7: centrifuging S6;
s8: drying S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A method for preparing ZnS crystal based on controlling the morphology of a copper-based catalyst is characterized by comprising the following steps:
s1: preparing an article weighing platform with high precision and deionized water;
s2: weighing a certain weight of zinc nitrate hexahydrate by using an article weighing platform in S1, weighing a certain weight of thiourea by using the article weighing platform, sequentially pouring the zinc nitrate hexahydrate and the thiourea into deionized water, and stirring to obtain a mixed solution;
s3: carrying out ultrasonic treatment on the S2;
s4: pouring the mixed solution subjected to the ultrasonic treatment of S3 into a crystallization kettle;
s5: crystallizing the mixed solution in the crystallization kettle at high temperature in the waiting S4;
s6: cooling to room temperature after crystallization in S5;
s7: centrifuging S6;
s8: drying the S7 at high temperature to obtain ZnS nano particles;
s9: washing S8 with ethanol;
s10: washing S8 with deionized water;
s11: and taking out the washed particles for later use.
2. The method for preparing ZnS crystal based on controlling morphology of copper-based catalyst according to claim 1, wherein: the weight of zinc nitrate hexahydrate in S2 was 2.44 grams.
3. The method for preparing ZnS crystal based on controlling morphology of copper-based catalyst according to claim 1, wherein: the weight of thiourea in S2 was 1.27 g.
4. The method for preparing ZnS crystal based on controlling morphology of copper-based catalyst according to claim 1, wherein: the sonication time in S3 was 30 minutes.
5. The method for preparing ZnS crystal based on control of morphology of copper based catalyst, according to claim 1, wherein: the crystallization temperature in S5 is controlled to 180 ℃.
6. The method for preparing ZnS crystal based on control of morphology of copper based catalyst, according to claim 1, wherein: the crystallization waiting time in S5 was controlled to 18 hours.
7. The method for preparing ZnS crystal based on controlling morphology of copper-based catalyst according to claim 1, wherein: the drying high temperature in the S8 is controlled at 100 ℃.
8. The method for preparing ZnS crystal based on controlling morphology of copper-based catalyst according to claim 1, wherein: the washing processes of S9 and S10 need to be repeated three times, respectively.
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| CN106517308A (en) * | 2015-09-15 | 2017-03-22 | 宿迁学院 | Preparation method of ZnS hollow microspheres |
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| CN101519223A (en) * | 2009-04-10 | 2009-09-02 | 武汉理工大学 | One-step template-free method for preparing a great amount of monodisperse ZnS hollow nanospheres |
| CN103613117A (en) * | 2013-12-02 | 2014-03-05 | 镇江市高等专科学校 | Method for regulating and controlling zinc sulfide nanoparticle morphology by regulating proportion of mixed solvent |
| CN106517308A (en) * | 2015-09-15 | 2017-03-22 | 宿迁学院 | Preparation method of ZnS hollow microspheres |
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Denomination of invention: A method for preparing ZnS crystals based on controlling the morphology of copper based catalysts Granted publication date: 20230516 Pledgee: Postal Savings Bank of China Co.,Ltd. Pingxiang Xiangdong District Sub branch Pledgor: JIANGXI BALIUSAN INDUSTRIAL CO.,LTD. Registration number: Y2024980006778 |