CN106379874A - Preparation method of g-C3N4 nanosphere - Google Patents
Preparation method of g-C3N4 nanosphere Download PDFInfo
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- CN106379874A CN106379874A CN201610856731.5A CN201610856731A CN106379874A CN 106379874 A CN106379874 A CN 106379874A CN 201610856731 A CN201610856731 A CN 201610856731A CN 106379874 A CN106379874 A CN 106379874A
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- 239000002077 nanosphere Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 10
- 238000004108 freeze drying Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000008187 granular material Substances 0.000 claims description 22
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 239000001117 sulphuric acid Substances 0.000 claims description 4
- 235000011149 sulphuric acid Nutrition 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- 238000000859 sublimation Methods 0.000 claims description 2
- 230000008022 sublimation Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000047 product Substances 0.000 abstract description 5
- 239000004065 semiconductor Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000013032 photocatalytic reaction Methods 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 238000001132 ultrasonic dispersion Methods 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002071 nanotube Substances 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- -1 cyanogen Amine Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- JMANVNJQNLATNU-UHFFFAOYSA-N glycolonitrile Natural products N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/0605—Binary compounds of nitrogen with carbon
-
- 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
-
- B01J35/39—
-
- B01J35/51—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Abstract
The invention relates to the field of semiconductor materials and aims to provide a preparation method of a g-C3N4 nanosphere. The method comprises the following steps: carrying out heat treatment on a nitrogen-rich precursor, and grinding a product into powder particles so as to obtain g-C3N4 particles; dispersing the g-C3N4 particles in acid liquor, carrying out ultrasonic processing, and then standing in a dark environment; filtering faint yellow precipitates, then washing and drying, and grinding into powder particles so as to obtain loose g-C3N4 particles; adding the loose g-C3N4 particles into concentrated ammonia water, carrying out ultrasonic dispersion to obtain a dispersion system, and then transferring to a hydrothermal reaction kettle to carry out hydrothermal reaction; and after hydrothermal reaction, carrying out freeze-drying to finally obtain the g-C3N4 nanosphere. The method provided by the invention solves the problem that g-C3N4 and other materials can not be easily compounded, and a prepared product has good dispersibility and can be prepared into dispersion liquid to be compounded with other semiconductor materials; the prepared g-C3N4 nanosphere has a large specific surface area and high quantum efficiency; surface active sites are increased; the compounding probability of g-C3N4 photo-induced electrons and holes is reduced; and the photocatalytic reaction efficiency is increased.
Description
Technical field
The invention belongs to field of semiconductor materials, particularly to g-C3N4The preparation method of nanosphere.
Background technology
With the development of social economy, energy shortage and environmental pollution increasingly highlight, and Photocatalitic Technique of Semiconductor is as solution
Certainly the technological means of the great development prospect of the energy and environmental issue are extensively paid attention to by all circles.Class graphitic carbon nitride (g-
C3N4) because of its special physicochemical properties, before the aspects such as Solar use, environmental pollution improvement show good application
Scape.However, block g-C3N4Due to higher electron-hole pair recombination rate, relatively low quantum efficiency, less absorption site and
Avtive spot, leads to photocatalysis efficiency not high, limits it and extensively applies.
In recent years, g-C3N4Nanorize has become the important channel improving its photocatalysis quantum efficiency.There is research using double cyanogen
Amine, as presoma, is successfully prepared, by electrochemical method, the g-C that diameter is about 1 μm3N4Hollow ball, this structure can make
There are multiple reflections in light in ball, its utilization rate to luminous energy is greatly improved.There is research with NaCl as template, by heat treatment
The g-C of nanometer band structure successfully prepared by dicyandiamide3N4.There is the g-C studying to solid phase method preparation3N4Carried out at backflow with methanol
Reason, successfully prepares a length of 0.5～3 μm, the g-C of a diameter of 100～150nm3N4Nanometer rods；Because photo-generated carrier can be
Fast transfer in this structure, with original g-C3N4Compare, its photocatalytic activity and photocurrent response have been respectively increased 1.5 and 2.0
Times.There is research that solid phase method technique is improved, using agitator, the crucible boat equipped with tripolycyanamide is continuously quickly shaken
Swing, be successfully prepared the g-C with nano tube structure3N4.This method is not only simple, and it can be avoided that introduces impurity.
Tested by Methyl blueness (MB) and find, the g-C of nano tube structure3N4There is excellent photocatalysis performance.Visible
Under light irradiation, its photocatalytic activity is than original g-C3N4High 1.4 and 2.6 times respectively with P25.There is research also by g-C3N4Water
The supersound process such as solution, acetone soln, ethanol solution, find g-C in the presence of ultrasound wave3N4Granule can effectively reduce, and
Degraded formation of nanostructured.Especially in the presence of alcoholic solution, ultra-thin g-C can be prepared3N4Nanometer chip architecture.Although it is super
After sound, photoresponse weakens, and energy gap becomes big, but due to nanometer sheet be conducive to the separation of photo-generated carrier with transfer so as to
Hydrogen generation efficiency is than initial g-C3N4About improve 10 times.Additionally, research worker is also by selection SiO2Core-shell structure copolymer nanosphere, illiteracy are de-
Soil, anodised aluminium etc., as hard mould agent, have synthesized g-C3N4Hollow ball, g-C3N4Nanometer sheet, g-C3N4The nanometers such as nanometer rods
Structure；Wherein, the g-C of synthesis3N4Hollow ball has loose surface topography, and it is catalyzed product hydrogen effect under monochromatic 420nm light irradiation
Rate is up to 7.5%, and after 7 circulations, still can keep higher product hydrogen activity.
It can be seen that, for current block g-C3N4The technical problem that quantum efficiency is low, photocatalytic activity is not high existing, passes through
Morphological control preparation has the g-C of certain nanostructured3N4It is the important means solving this problem, and constantly develop new g-
C3N4Morphological control method has become the focus of current this art innovation.
Content of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art, provides a kind of g-C3N4The system of nanosphere
Preparation Method.
For solving above-mentioned technical problem, the solution of the present invention is：
A kind of g-C is provided3N4The preparation method of nanosphere, comprises the steps：
Step A：Rich nitrogen presoma is placed in corundum boat, tube furnace carries out heat treatment；After naturally cooling to room temperature,
Yellow polymerizate is ground to powdered granule, obtains g-C3N4Granule；
Wherein, described richness nitrogen presoma is one or more of cyanamide, dicyandiamide, tripolycyanamide；
Step B：By g-C3N4Granule is scattered in acid solution, supersound process 3～5h；Be subsequently placed in dark surrounds standing 1～
6h, obtains light yellow precipitate；After filtration, use distilled water and absolute ethanol washing precipitate successively；Finally in 60 DEG C of dryings
24h, light yellow precipitate is ground to powdered granule, obtains loose g-C3N4Granule；
Wherein, acid solution is by concentrated sulphuric acid and concentrated nitric acid by volume 1:3～3:1 is formulated, g-C3N4Granule divides in acid solution
Scattered mass percent concentration is 10～50%；
Step C：By loose g-C3N4It is in 28% strong aqua ammonia that granule adds mass fraction, makes the solid content be
0.01wt%-0.2wt%；After ultrasonic disperse obtains dispersion, it is transferred to hydrothermal reaction kettle and carries out hydro-thermal reaction；Hydro-thermal reaction
After will contain g-C3N4Ammonia spirit carry out lyophilization, finally obtain g-C3N4Nanosphere.
In the present invention, in described step A, during heat treatment, atmosphere is air, and control heating rate is 1.5～4 DEG C/min, protects
Temperature is 450 DEG C～600 DEG C, and temperature retention time is 2～6h；
In the present invention, in described step A, grinding is to adopt ball-milling technology, and control condition is：Ratio of grinding media to material 70: 1, ball milling speed
500 turns/min of rate, Ball-milling Time 4h.
In the present invention, in described step C, hydrothermal temperature is 120 DEG C～200 DEG C, and the response time is 6h～24h；Cold
Lyophilizing is dry to be to be realized using freezer dryer, controls its shelf temperature to be -30 DEG C～-60 DEG C, and vacuum is 1Pa, lyophilization
Time is 18～36h.
The present invention realizes principle：
The present invention passes through sulphuric acid and nitric acid to g-C3N4Block particle is protonated, and obtains loose g-C3N4Granule；So
Afterwards under hydrothermal conditions, using high concentration ammonia to g-C3N4The dissociation of particle network structure, and utilize Freeze Drying Technique
By dissociating product fast and stable and remove ammonia, obtain required g-C3N4Nanosphere.
Compared with prior art, the invention has the beneficial effects as follows：
1st, solve g-C3N4It is difficult compound problem with other materials, be prepared for the good g-C of dispersibility3N4Nanosphere,
Can be made into and be there is certain density dispersion liquid, be easy to be combined with other semi-conducting materials；
2nd, the g-C of preparation3N4Nanosphere has bigger serface and high-quantum efficiency, increased surface activity site, reduces
G-C3N4Light induced electron and the compound probability in hole, improve light-catalyzed reaction efficiency.
Brief description
Fig. 1 is g-C3N4The transmission electron microscope photo of nanosphere.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail：
g-C3N4The preparation method of nanosphere, comprises the steps：
Step A：A certain amount of richness nitrogen presoma is placed in corundum boat, tube furnace carries out heat treatment.Natural cooling
To room temperature, yellow polymerizate is ground to powdered granule, obtains g-C3N4Granule.
Wherein, heating rate during heat treatment is 1.5～4 DEG C/min, and holding temperature is 450 DEG C～600 DEG C, temperature retention time
For 2～6h, heat-treating atmosphere is air.
Step B：By the g-C obtaining3N4It is scattered in the acid solution preparing, and ultrasonic certain time, then it is placed on black
In dark situation, standing obtains light yellow precipitate after a period of time；Precipitate is filtered, and uses distilled water and dehydrated alcohol successively
Washing, is finally dried 24h at 60 DEG C, and light yellow precipitate is ground to powdered granule, obtains loose g-C3N4Granule.
Wherein, the composition of acid solution and proportioning are 1 for the volume ratio of concentrated sulphuric acid and concentrated nitric acid:3～3:1, g-C3N4In acid solution
Scattered mass percent concentration is 10～50%；Ultrasonic time is 3～5h；In dark surrounds, time of repose is 1～6h.
Step C：By loose g-C3N4Granule ultrasonic disperse to mass fraction be 28% strong aqua ammonia in obtain dispersion
And it is ultrasonic；It is then transferred to hydrothermal reaction kettle and carry out hydro-thermal reaction；G-C will be contained after hydro-thermal reaction3N4Ammonia spirit enter
Row lyophilization, finally obtains g-C3N4Nanosphere.
Wherein, loose g-C3N4Solid content in strong aqua ammonia system for the granule is 0.01wt%-0.2wt%；Hydro-thermal reaction temperature
Spend for 120 DEG C～200 DEG C, the response time is 6h～24h；In freezer dryer, shelf temperature is -30 DEG C～-60 DEG C, vacuum
For 1Pa, sublimation drying is 18～36h.
The following examples can make this professional professional and technical personnel that the present invention is more fully understood, but not with any side
Formula limits the present invention.
G-C is successfully obtained by 8 embodiments respectively3N4The preparation method of nanosphere, the test data in each embodiment is shown in
Table 1 below.
Table 1 embodiment tables of data
Last in addition it is also necessary to it is noted that listed above be only the present invention be embodied as example.Obviously, the present invention is not
It is limited to above example, can also have many deformation.Those of ordinary skill in the art can be straight from present disclosure
Connect all deformation derived or associate, be all considered as protection scope of the present invention.
Claims (4)
1. a kind of g-C3N4The preparation method of nanosphere is it is characterised in that comprise the steps：
Step A：Rich nitrogen presoma is placed in corundum boat, tube furnace carries out heat treatment；After naturally cooling to room temperature, by Huang
Color polymerizate is ground to powdered granule, obtains g-C3N4Granule；
Wherein, described richness nitrogen presoma is one or more of cyanamide, dicyandiamide, tripolycyanamide；
Step B：By g-C3N4Granule is scattered in acid solution, supersound process 3～5h；It is subsequently placed in standing 1～6h in dark surrounds,
Obtain light yellow precipitate；After filtration, use distilled water and absolute ethanol washing precipitate successively；Finally 24h is dried at 60 DEG C, will
Light yellow precipitate is ground to powdered granule, obtains loose g-C3N4Granule；
Wherein, acid solution is by concentrated sulphuric acid and concentrated nitric acid by volume 1:3～3:1 is formulated, g-C3N4Granule is scattered in acid solution
Mass percent concentration is 10～50%；
Step C：By loose g-C3N4It is in 28% strong aqua ammonia that granule adds mass fraction, makes solid content be 0.01wt%-
0.2wt%；After ultrasonic disperse obtains dispersion, it is transferred to hydrothermal reaction kettle and carries out hydro-thermal reaction；To contain after hydro-thermal reaction
g-C3N4Ammonia spirit carry out lyophilization, finally obtain g-C3N4Nanosphere.
2. method according to claim 1 is it is characterised in that in described step A, during heat treatment, atmosphere is air, controls
Heating rate is 1.5～4 DEG C/min, and holding temperature is 450 DEG C～600 DEG C, and temperature retention time is 2～6h.
3. method according to claim 1, it is characterised in that in described step A, grinding is to adopt ball-milling technology, controls
Condition is：Ratio of grinding media to material 70: 1,500 turns/min of ball milling speed, Ball-milling Time 4h.
4. method according to claim 1 is it is characterised in that in described step C, hydrothermal temperature is 120 DEG C～200
DEG C, the response time is 6h～24h；Lyophilization is to be realized using freezer dryer, controls its shelf temperature to be -30 DEG C～-60
DEG C, vacuum is 1Pa, and sublimation drying is 18～36h.
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Cited By (10)
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|---|---|---|---|---|
| CN107876074A (en) * | 2017-10-20 | 2018-04-06 | 浙江大学 | g‑C3N4The preparation method of nano particle/flower-shaped BiOI composites |
| CN107954405A (en) * | 2017-11-22 | 2018-04-24 | 浙江大学 | g-C3N4The preparation method of colloidal sol |
| CN108190849A (en) * | 2017-12-28 | 2018-06-22 | 四川大学 | A kind of graphite phase carbon nitride nanoparticle and preparation method thereof |
| CN109205580A (en) * | 2018-11-12 | 2019-01-15 | 青岛科技大学 | A kind of method of ball milling removing graphite phase carbon nitride |
| CN109622013A (en) * | 2018-12-07 | 2019-04-16 | 陕西科技大学 | One type graphite phase carbon nitride-(110) crystal face pucherite Z-type heterojunction photocatalyst and its preparation method and application |
| CN109734060A (en) * | 2019-02-18 | 2019-05-10 | 东南大学 | Azotized carbon nano material and its preparation method and application |
| CN110148713A (en) * | 2018-02-12 | 2019-08-20 | 澳门大学 | A kind of carbon-coated richness nitrogen g-C3N4 and negative electrode material and preparation method thereof |
| CN110233271A (en) * | 2019-05-24 | 2019-09-13 | 南京杰科丰环保技术装备研究院有限公司 | A kind of carbon-based formic acid catalyst for preparing hydrogen of layered nitride and preparation method thereof |
| CN110813375A (en) * | 2019-10-31 | 2020-02-21 | 湘潭大学 | Preparation method and application of ultralong hollow chain spherical carbon nitride photocatalytic material |
| CN111203258A (en) * | 2020-02-24 | 2020-05-29 | 上海电力大学 | Photocatalyst S-C3N4Preparation method and application of |
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