CN108017047A - One hollow mesoporous carbon spheres nano material of species rambutan type azepine and preparation method thereof - Google Patents
One hollow mesoporous carbon spheres nano material of species rambutan type azepine and preparation method thereof Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- XYOVOXDWRFGKEX-UHFFFAOYSA-N azepine Chemical compound N1C=CC=CC=C1 XYOVOXDWRFGKEX-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000002086 nanomaterial Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 244000011919 rambutan Species 0.000 title 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 36
- 244000183331 Nephelium lappaceum Species 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000007861 rambutan Nutrition 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 14
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 8
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 7
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 7
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 7
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 5
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 5
- 239000002105 nanoparticle Substances 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 claims description 9
- 239000005011 phenolic resin Substances 0.000 claims description 9
- 229920001568 phenolic resin Polymers 0.000 claims description 9
- 229940011182 cobalt acetate Drugs 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229910017665 NH4HF2 Inorganic materials 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000013067 intermediate product Substances 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 241000143432 Daldinia concentrica Species 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 159000000021 acetate salts Chemical class 0.000 abstract description 2
- 238000003837 high-temperature calcination Methods 0.000 abstract description 2
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 229910052697 platinum Inorganic materials 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 25
- 238000000034 method Methods 0.000 description 8
- 239000010953 base metal Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 150000007974 melamines Chemical class 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 150000001412 amines Chemical class 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
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005287 template synthesis Methods 0.000 description 1
- 238000009827 uniform distribution 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
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- 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
- B01J35/33—Electric or magnetic properties
-
- 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
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to field of material synthesis technology, more particularly to mesoporous hollow carbon balls nano material of species rambutan type azepine and preparation method thereof, belong to electro-catalysis technical field.The present invention proposes one kind with spherical SiO2As hard template, metal acetate salt and melamine are added in methanol, three's mixing.High-temperature calcination, goes template, washing.Such hollow mesoporous carbon spheres material of rambutan type azepine, the size of nano-particle is 360 450 nanometers, and a diameter of 30 50 nanometers of hollow cavity, the aperture of mesopore orbit is 40 50 nanometers, and the width of carbon nanotubes is 10 15 nanometers, and specific surface area is 350 400m2g‑1.The material is mainly used in electro-catalysis direction, such as oxygen reduction reaction, and a kind of possibility will be provided instead of noble metal platinum for future.
Description
Technical field
The invention belongs to field of material synthesis technology, more particularly to a hollow mesoporous carbon spheres nanometer of species rambutan type azepine
Material and preparation method thereof, belongs to electro-catalysis technical field.
Background technology
Contradiction between energy shortage and environmental pollution and economic development is becoming increasingly acute, and becomes and restricts China's economic society
The bottleneck of development.Therefore, develop novel energy-storing material and sorbing material enjoys the concern of country and researcher.Hollow carbon is received
The unique spatial structure of rice material, shows the characteristics such as special optics, electricity, catalytic property and particle transport, makes its extensive
Be applied to ultracapacitor, water process, lithium ion battery, photochemical cell and catalyst etc., wherein, meso-porous hollow carbon
Ball is then widely used in every field because of it with larger inner cavity, abundant duct, especially can effectively adsorb
Pollutant in water or in gas, so as to achieve the purpose that purifying water body or gas, therefore has potential huge applications prospect.
This causes more and more new technologies to be used among the preparation of hollow carbon balls, has promoted the synthesis court of hollow carbon balls material significantly
Controllable.The direction of low cost is developed.At present, the preparation method of hollow carbon balls mainly have chemical vapor deposition, impact compress method,
Metal deoxidization, hydrothermal synthesis method.Supercritical methanol technology and template etc..So-called Template synthesis hollow carbon balls, are exactly that shape is easy
In the material of synthesis and control as core template, carbon source is deposited in template by method physically or chemically, forms nucleocapsid
Structure, then removes removing template by calcining or solution immersion, obtains the controllable hollow carbon balls of pattern size.With other methods phase
Than template has many advantages, such as, is mainly manifested in：(1) core template is readily synthesized and size is controllable；(2) building-up process is simple, fits
Together in mass production；(3) hollow carbon balls of synthesis have good structural controllability.Hollow carbon nanomaterial is broadly divided into pipe
Two class of shape carbon nanomaterial and hollow carbon sphere.
In recent years, its electrocatalysis characteristic is further lifted by base load multiple types base metal of hollow mesoporous carbon spheres,
Such as the base metal such as cobalt, iron, nickel and its oxide is embedded in carbon material surface.Understand according to the literature, carbon nanotubes
Electric conductivity be better than hollow carbon balls, if hollow mesoporous carbon spheres surface combines carbon nanotubes, you can enhancing carbon ball electric conductivity in itself.
A kind of relatively simple easy strategy is devised based on this present invention, is prepared with the new of the hollow mesoporous carbon spheres of class rambutan type
Clever structure, the structure are obviously improved relative to single hollow mesoporous carbon spheres, its hydrogen reduction performance.
The content of the invention
The object of the present invention is to provide a kind of of low cost, the easy high-performance class rambutan type nitrogen stablized with performance of method
Miscellaneous mesoporous hollow carbon balls nano material.
To realize the mesoporous hollow carbon balls nano material of class rambutan type azepine with special construction, the skill that the present invention uses
Art scheme is：The present invention proposes one kind with spherical SiO2As hard template, metal acetate salt and melamine are added in methanol, and three
Person mixes.High-temperature calcination, goes template, washing.Such hollow mesoporous carbon spheres material of rambutan type azepine, the size of nano-particle are
360-450 nanometers, a diameter of 30-50 nanometers of hollow cavity, the aperture of mesopore orbit is 40-50 nanometers, the width of carbon nanotubes
Spend for 10-15 nanometers, specific surface area 350-400m2g-1.The material is mainly used in electro-catalysis direction, such as hydrogen reduction is anti-
Should, for future a kind of possibility will be provided instead of noble metal platinum.
Present invention also offers a kind of preparation method of the above-mentioned mesoporous hollow carbon balls nano material of class rambutan type azepine, tool
Body step is：
(1) a solution：Ethanol obtains a solution after being mixed with tetraethyl orthosilicate.
B solution：Ethanol, water and ammonium hydroxide obtain b solution after being mixed.
A solution is quickly poured into b solution, the mixed solution reaction 24h of Resorcino and formaldehyde is added after mixing, is turned
Enter reaction kettle reaction 24 it is small when, 100 degree.It is cooled to room temperature and washs.Washing is washed by ethanol and deionized water, and vacuum is cold
It is lyophilized dry, obtain the silica spheres of intermediate product phenolic resin parcel.
(2) intermediate product obtained in step (1) is disperseed in methyl alcohol, to add melamine, cobalt acetate stirring, ultrasound
It is scattered.
The intermediate product, methanol, the mass volume ratio of melamine and cobalt acetate are：0.2-1g：5ml-30ml：0.3
~1.5g：0.05-0.5g.
(3) mixed solution in step (2), which is stirred at room temperature to methanol, is evaporated.
(4) solid state powder being evaporated in (3) is placed in air dry oven and further dried, keep 70 degree of temperature, duration
For 2h.
(5) solid after drying in (4) is ground, be placed in Noah's ark, under semi-closed state, heating rate 5
DEG C/min, holding temperature is 600-900 degree, and the retention time is 2h in nitrogen or argon gas atmosphere, then with 4M NH4HF2Dissolving
SiO2Obtain the hollow mesoporous carbon spheres material of class rambutan type azepine.
The beneficial effects of the invention are as follows：The present invention first by phenolic resin cladding silica spheres by with cobalt acetate and its
Mixing to for melamine is dry, after calcining, utilizes 4M NH4HF2Silica template is removed.Preparing surface can be former
Position grows the hollow mesoporous carbon spheres i.e. class rambutan structure of CNT.Be conducive to avoid the reunion of carbon pipe, while also further improve
The specific surface area of hollow carbon balls, more easily mass transfer, therefore be more widely used in following meeting.
Brief description of the drawings
Fig. 1 is the SEM photograph of the hollow mesoporous carbon spheres material of class rambutan type azepine prepared by the present invention.
Fig. 2 is the TEM photos of the hollow mesoporous carbon spheres material of class rambutan type azepine prepared by the present invention.
Fig. 3 is base metal, the electrocatalytic oxidation reducing property of the nitrogen co-doped hollow mesoporous carbon spheres catalyst of class rambutan type.
Embodiment
Below in conjunction with the accompanying drawings to the further details of elaboration of the present invention.
Embodiment (one)：The silica spheres that 1.0g phenolic resin coats are scattered in 20ml methanol solutions, ultrasound
30min, adds 0.3g cobalt acetates, does not add melamine, stirring, ultrasonic disperse 30min, 70 DEG C of drying are in baking oven, transfer
It is placed in Noah's ark, under semi-closed state, heating rate is 5 DEG C/min, is warming up to 800 degree, is protected in nitrogen or argon gas atmosphere
It is 2h to hold the time.It is cooled to room temperature, then with 4M NH4HF2Dissolve SiO2, obtained after the completion of reaction substance migration ethanol, go from
Sub- water washing and vacuum freeze drying, that is, obtain the hollow mesoporous carbon spheres of azepine (N-HMCS).Before the structure is due to being not introduced into metal
Drive body, the caused final class rambutan structure for not generating carbon pipe, that is, carbon ball surface.
Embodiment (two)：The silica spheres that 1.0g phenolic resin coats are scattered in 20ml methanol solutions, ultrasound
30min, does not add cobalt acetate, adds 1.0g melamines, stirring, ultrasonic disperse 30min, 70 DEG C of drying are in baking oven, transfer
Be placed in Noah's ark, under semi-closed state, heating rate is 5 DEG C/min, is warming up to 700,800,900 degree respectively, nitrogen or
The retention time is 2h in argon gas atmosphere.It is cooled to room temperature, then dissolves SiO with 4M NH4HF22, material is obtained after the completion of reaction
Using ethanol, deionized water washing and vacuum freeze drying, that is, obtain the miscellaneous hollow mesoporous carbon spheres (Co-HMCS) of cobalt.The structure by
In the presoma melamine for being not introduced into carbon source and nitrogen source, the caused final class rambutan knot for not generating carbon pipe, that is, carbon ball surface
Structure.
Embodiment (three)：The silica spheres that 0.2g phenolic resin coats are scattered in 5ml methanol solutions, ultrasound
30min, adds 0.3g cobalt acetates, adds 1g melamines, stirs 30min, 70 DEG C of drying, and transfer is placed in Noah's ark, is sealed half
Under closed state, heating rate is 5 DEG C/min, is warming up to 800 DEG C, and the retention time is 2h in nitrogen or argon gas atmosphere.It is cooled to
Room temperature, then with 4M NH4HF2Dissolve SiO2, substance migration ethanol, deionized water washing and vacuum refrigeration are obtained after the completion of reaction
It is dry, that is, obtain the hollow mesoporous carbon spheres of class rambutan type azepine.The structure introduces the presoma melamine of carbon source and nitrogen source at the same time
Amine and cobalt acetate are ultimately generated with high conductivity carbon pipe, i.e., with the hollow of class rambutan structure as metal precursor
Mesoporous carbon spheres.
Fig. 1 is the SEM photograph of the hollow mesoporous carbon spheres material of class rambutan type azepine prepared by the present invention.Carbon ball surface in figure
The a diameter of 10-15nm of high conductivity is uniform-distribution with by growth in situ, length is the carbon pipe of 50-100nm.Also by fluorination
After the processing of hydrogen ammonium, some unstable materials or it is removed exposed to carbon ball particles above, causes surface to occur 20-30nm's
Hole.This method can also solve the bottleneck that carbon pipe is easily reunited at the same time.
Fig. 2 is the TEM photos of the hollow mesoporous carbon spheres material of class rambutan type azepine prepared by the present invention.It can be seen from the figure that
Carbon pipe is from carbon ball surface to extension vertical-growth.
Fig. 3 is base metal, the electrocatalytic oxidation reducing property of the nitrogen co-doped hollow mesoporous carbon spheres catalyst of class rambutan type.
It can be seen from the figure that is by nonmetal doping, and melamine is as carbon source and nitrogen source, azepine of the generation with class rambutan structure
Carbon ball effect is optimal.Metal is introduced into carbon ball system, but under conditions of no addition melamine, failing generation has carbon
The class rambutan structure of pipe, its ORR performance are larger compared to class rambutan structure elctro-catalyst gap.
Claims (7)
- A 1. hollow mesoporous carbon spheres nano material of species rambutan type azepine, it is characterised in that the nano material is the red hair of class The surface of red structure can growth in situ go out the hollow mesoporous carbon spheres of CNT, the size of nano-particle is 360-450 nanometers, in it is absolutely empty A diameter of 30-50 nanometers of chamber, the aperture of mesopore orbit is 40-50 nanometers, and the width of carbon nanotubes is 10-15 nanometers, length For 50-100nm；Specific surface area is 350-400m2g-1, can apply in electro-catalysis field.
- 2. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 1, it is special Sign is, the silica spheres that phenolic resin wraps up are disperseed in methyl alcohol, to add melamine, cobalt acetate stirring, ultrasound point Dissipate and obtain mixed solution；The drying of the solid state powder after being evaporated, grinding is stirred at room temperature to methanol in mixed solution, is placed in Noah's ark, Under semi-closed state, 600-900 degree is warming up to, the retention time is 2h in nitrogen or argon gas atmosphere, then dissolves SiO2 To the hollow mesoporous carbon spheres material of class rambutan type azepine.
- 3. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 2, it is special Sign is that the mass volume ratio of silica spheres, methanol, melamine and cobalt acetate that the phenolic resin wraps up is：0.2- 1g：5ml-30ml：0.3~1.5g：0.05-0.5g.
- 4. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 2, it is special Sign is, the drying, which refers to, keeps 70 degree of temperature, when a length of 2h.
- 5. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 2, it is special Sign is that the speed of the heating is 5 DEG C/min.
- 6. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 2, it is special Sign is, using 4M NH4HF2Dissolve SiO2。
- 7. the preparation method of the hollow mesoporous carbon spheres nano material of species rambutan type azepine as claimed in claim 2, it is special Sign is that the preparation method of the silica spheres of the phenolic resin parcel is：Ethanol and tetraethyl orthosilicate are mixed After obtain a solution；B solution is obtained after ethanol, water and ammonium hydroxide are mixed；A solution is quickly poured into b solution, is mixed Add the mixed solution reaction 24h of Resorcino and formaldehyde afterwards, be transferred to reaction kettle reaction 24 it is small when, 100 degree, be cooled to room temperature simultaneously Washing, washing are washed by ethanol and deionized water, and vacuum freeze drying, obtains the dioxy of intermediate product phenolic resin parcel SiClx ball.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675603A (en) * | 2018-12-28 | 2019-04-26 | 西安交通大学 | A kind of carbon-supported catalysts and its preparation method and application of silica protection |
| CN110724491A (en) * | 2019-09-10 | 2020-01-24 | 北京石墨烯技术研究院有限公司 | Wave absorbing agent, preparation method thereof and wave absorbing material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675603A (en) * | 2018-12-28 | 2019-04-26 | 西安交通大学 | A kind of carbon-supported catalysts and its preparation method and application of silica protection |
| CN110724491A (en) * | 2019-09-10 | 2020-01-24 | 北京石墨烯技术研究院有限公司 | Wave absorbing agent, preparation method thereof and wave absorbing material |
| CN110724491B (en) * | 2019-09-10 | 2020-09-11 | 北京石墨烯技术研究院有限公司 | Wave absorbing agent, preparation method thereof and wave absorbing material |
| CN111454091A (en) * | 2020-04-17 | 2020-07-28 | 中国科学院合肥物质科学研究院 | Leaf fertilizer with ultrahigh adhesive force and preparation method thereof |
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