CN103979525A - Preparation method of acidyl-rich spherical carbon material - Google Patents
Preparation method of acidyl-rich spherical carbon material Download PDFInfo
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- CN103979525A CN103979525A CN201410217342.9A CN201410217342A CN103979525A CN 103979525 A CN103979525 A CN 103979525A CN 201410217342 A CN201410217342 A CN 201410217342A CN 103979525 A CN103979525 A CN 103979525A
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Abstract
The invention provides a preparation method of an acidyl-rich spherical carbon material. The preparation method of the acidyl-rich spherical carbon material comprises the following steps: with saccharides or polyvinyl alcohol as a carbon template agent, mixing the carbon template agent with an organic acid, and dissolving a mixture in deionized water, so that a colorless and transparent solution is obtained; transferring the colorless and transparent solution into a stainless steel reaction kettle, and carrying out reaction for 18-24 hours at the temperature of 160-210 DEG C, so that a product is obtained; filtering, washing and drying the product, so that a primarily acidified spherical carbon material is obtained; placing the primarily acidified spherical carbon material into a muffle furnace, and carrying out reaction for 3-10 hours at the temperature of 200-450 DEG C, so that a product is obtained after the reaction is finished; washing the product to be neutral, and drying, so that a secondarily acidified spherical carbon material is obtained. The preparation method of the acidyl-rich spherical carbon material has the advantages of simplicity and convenience, the spherical carbon material which has a special morphology, is high in acidity and can be easily functionalized can be prepared, and the prepared acidyl-rich spherical carbon material has high acidity and good spherical morphology.
Description
Technical field
The present invention relates to a kind ofly by the method for the rich acidifying of spherical carbon material, obtain the material containing many carboxyls, the spherical carbon of poly-hydroxy, further functionalization, belongs to ceramic preparation method technical field.
Background technology
Since Kroto in 1985 etc. find that soccerballene, lijima in 1991 find CNT (carbon nano-tube), worldwide just carry out the comprehensive research to carbon materials.The discovery of spherical carbon material is in the sixties in 20th century, and people find that in the forming process of research coke pitch compounds changes in the middle of can occurring in heat treatment process mutually, generates mesophase ball.1973, Honda and Yamada separated mesophase ball from pitch parent, and the micron-size spherical carbon material of separating is referred to as to carbonaceous mesophase spherules (mesocarbon microbeads, MCMB).Because carbonaceous mesophase spherules has the performance of many excellences, as self sintering energy, unreactiveness, high-bulk-density, good conduction and thermal conductivity etc., can be used as high-density high-strength carbon material, high-performance liquid chromatography filler, support of the catalyst, activated carbon with high specific surface area and ion secondary battery cathode material lithium etc.There is the carbon material of unique texture, different-shape and group, due to the potential using value having in above-mentioned multiple fields, caused widely and paid close attention to.
At present, generally few containing acidic-group in synthetic spherical carbon material, be unfavorable for further functionalization, be necessary to optimize associated ball carbon material structure and self property thereof by novel method.Although material surface activation is the technical process of a comparative maturity, because carbon material surface has lower reactivity, and corrosion reaction in the rich acidization of carbon material occurs, and makes the rich acidization condition of carbon material also seem comparatively harsh.
Summary of the invention
The object of the present invention is to provide the preparation method of the spherical carbon material of a kind of rich acidic group, prepared high acidity and be easy to the spherical carbon material of functionalization by method comparatively easily, products obtained therefrom has higher acidity and spherical morphology preferably.
The present invention for the adopted technical scheme that achieves the above object is: the preparation method of the spherical carbon material of a kind of rich acidic group, comprises the steps:
1) taking carbohydrate or polyvinyl alcohol as carbon template, mix with organic acid, be dissolved in deionized water, obtain colourless transparent solution;
2) colourless transparent solution is transferred in stainless steel cauldron, under the condition of 160-210 DEG C, solvent thermal reaction 18-24h obtains product, product after filtration, washing, obtain the spherical carbon material of an acidifying after dry;
3) the spherical carbon material of an acidifying is placed in to retort furnace, under the condition of 200-450 DEG C, reacts 3-10h, after having reacted, obtain product, product obtains the spherical carbon material of after-souring, i.e. target product after washing to neutral, filtration, being dried.
The preparation method of the above-mentioned spherical carbon material of rich acidic group, described carbohydrate is glucose, sucrose, lactose, fructose, Mierocrystalline cellulose, maltose or starch.
The preparation method of the above-mentioned spherical carbon material of rich acidic group, described organic acid is one or more mixing of citric acid, tartrate, oxysuccinic acid, oxalic acid, vinylformic acid, phenylformic acid, Whitfield's ointment, coffic acid, propanedioic acid, hexanodioic acid or hydroxyethylsulfonic acid.
The preparation method of the above-mentioned spherical carbon material of rich acidic group, carbon template and organic acid mass ratio are 1:0.1-2.5.
The preparation method of the above-mentioned spherical carbon material of rich acidic group, every gram of carbon template, adds 7ml-24ml deionized water.
The present invention compared with prior art has following beneficial effect: raw material cheapness of the present invention, simple process, gained carbon material not only has the character of spherical carbon material, there is especially higher acidity, the acidity of the spherical carbon material of acidifying obtaining by method of the present invention is 3.7-5.1mmol/g, the acidity of the spherical carbon material of after-souring obtaining is 6.1-7.2mmol/g, improve the possibility that the dispersive ability of material in solution and other active groups of link participate in reaction, for further functionalization lays the foundation.It is hydro-thermal reaction that the present invention reacts primary condition, has easy, gentle, green advantage.
Brief description of the drawings
Fig. 1 is the scanning electron microscope of the spherical carbon material of the after-souring prepared of embodiment 1 the inventive method.
Fig. 2 is the scanning electron microscope of spherical carbon material-2 of the non-acidizing prepared of embodiment 1 contrast experiment.
Fig. 3 is the spherical carbon material of an acidifying prepared of embodiment 1 the inventive method and the infrared spectrogram of spherical carbon material-1 of non-acidizing prepared by contrast experiment;
In figure, a: spherical carbon material-1 of contrast experiment's non-acidizing; B: the spherical carbon material of an acidifying of the present invention.
Fig. 4 is the spherical carbon material of after-souring prepared of embodiment 1 the inventive method and the infrared spectrogram of spherical carbon material-2 of non-acidizing prepared by contrast experiment;
In figure, a: spherical carbon material-2 of contrast experiment's non-acidizing; B: the spherical carbon material of after-souring of the present invention.
Fig. 5 is the spherical carbon material of after-souring prepared of embodiment 1 the inventive method and the X-ray powder diffraction collection of illustrative plates of spherical carbon material-2 of non-acidizing prepared by contrast experiment;
In figure, B: spherical carbon material-2 of contrast experiment's non-acidizing; D: the spherical carbon material of after-souring of the present invention.
Fig. 6 is the spherical carbon material of after-souring prepared of embodiment 1 and the thermal weight loss collection of illustrative plates of ball carbon material-2 of non-acidizing prepared by comparative example;
In figure, B: spherical carbon material-2 of contrast experiment's non-acidizing; D: the spherical carbon material of after-souring of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is further described in detail, but is not limited to this.The pharmaceutical chemicals adopting in the following example is all commercial chemicals.
The preparation method of 1 one kinds of spherical carbon materials of rich acidic group of embodiment
(1) preparation method of the present invention
1) 1.65g glucose and 0.5357g tartrate are joined in the deionized water of 12ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 15ml, under 200 DEG C of conditions, reacted 18h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 5h in retort furnace under the condition of 280 DEG C.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
(2) contrast experiment
1) glucose of 1.65g is dissolved in the deionized water of 12ml, at room temperature stirs, it is mixed, become colourless transparent solution.
2) this colourless transparent solution is transferred in the autoclave of 15ml, under 200 DEG C of conditions, react 18h, be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, spherical carbon material-1 of dry non-acidizing at 70 DEG C.
3) 5h is reacted under the condition of 280 DEG C in spherical carbon material-1 of non-acidizing in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, be dried to obtain spherical carbon material-2 of non-acidizing.
(3) test result
1, the spherical carbon material of the rich acidic group of target product method of the present invention being prepared (, the spherical carbon material of after-souring of modifying through tartrate) and contrast experiment in spherical carbon material-2 of the non-acidizing for preparing carry out respectively scanning electronic microscope (SEM) and test, test result as depicted in figs. 1 and 2, as seen from Figure 1, in method of the present invention, tartrate has participated in the one-tenth nuclear reaction of carbon ball, it is large that the carbon spherical diameter of the spherical carbon material of reacted rich acidic group obviously becomes, average 5-8 μ m.As seen from Figure 2, spherical carbon material-2 of non-acidizing, its carbon spherical diameter average out to 1.5 μ m.
2, acidity detection method: the acidity that records spherical carbon material by acid base titration.Concrete steps are: spherical rich acidic group carbon material is dispersed in NaOH solution, stirs 24h, get a certain amount of mixing solutions, taking phenolphthalein as indicator, carry out back titration with dilute hydrochloric acid.The acidity of the spherical carbon material of the after-souring that after testing, prepared by the present invention is 7.2mmol/g; And the acidity of spherical carbon material-2 of non-acidizing prepared by simultaneous test is 3.7mmol/g.
Infrared spectrum (IR) test is carried out in spherical carbon material-1 (a) of the non-acidizing preparing in the spherical carbon material (b) of the acidifying of modifying through tartrate 3, the inventive method being prepared and contrast experiment, test result as shown in Figure 3, as shown in Figure 3,3400cm
-1left and right is corresponding to the absorption peak of-OH, l030cm
-1left and right is corresponding to the absorption peak of C-O-H, and this two peak shows that this carbon ball surface exists a large amount of-OH.2920cm
-1near small peak is to be caused by C-H stretching vibration.1701cm
-1the stretching vibration of the corresponding C=O in left and right, 1601cm
-1cause by gripping altogether olefin skeletal vibration.1500cm
-1the existence at peak shows that glucose has produced aromatize in hydrolytic process.B spectrogram than a spectrogram at 1159cm
-1place's absorption of vibrations obviously strengthens.
Infrared spectrum (IR) test is carried out in spherical carbon material-2 (a) of the non-acidizing preparing in the spherical carbon material (b) of the after-souring of modifying through tartrate 4, the inventive method being prepared and contrast experiment, test result is shown in accompanying drawing 4, contrasted 500-1000cm after further carbonization from Fig. 4 and Fig. 3
-1between some assorted peaks disappear, carbon ball surface be mainly containing oxygen peak, acidity increases.The existence that is just containing in a large number-OH and these hydrophilic functional groups of C=O due to the carbon ball surface after modifying, improve its dispersiveness, stability in the aqueous solution, can be applied to biological chemistry, support of the catalyst, prepare the aspects such as nuclear case structure hybridization material, hollow or porous material.
From Fig. 3, Fig. 4 infrared spectra, organic acid of the present invention participates in after reaction, and the spherical carbon material of target product after-souring is at 1700cm
-1, 1600cm
-1, 1300cm
-1, 1160cm
-1near have stronger absorption of vibrations, from document, be that the carbonyl group relevant with hydroxyl exists, in conjunction with acidity measurement result, and results of grain size analysis in solution, the Solution Dispersion of the spherical carbon material after acidifying is better, and carboxylic group can be as further functionalization group.
Obviously increase with the carbon spherical diameter of the spherical carbon material of rich acidic group after organic acid reaction, and infrared spectra has considerable change, illustrate that organic acid participates in reaction, a large amount of carboxyls, hydroxyl are contained in carbon ball surface, and smooth surface.In conjunction with ir data, illustrate that after-souring product of the present invention surface contains a large amount of carboxyls, hydroxyl, and smooth surface, there is no other impurity, better dispersed.
X-ray powder diffraction (XRD) test is carried out in spherical carbon material-2 (B) of the non-acidizing preparing in the spherical carbon material (D) of the after-souring of modifying through tartrate 5, the inventive method being prepared and contrast experiment, test result is shown in accompanying drawing 5, as shown in Figure 5, carbon ball before acidifying has an obvious peak 24 ° of left and right, wider and the disperse in this peak, corresponding to the agraphitic carbon in standard card.Carbon ball after acidifying has an obvious peak 26 ° of left and right, and this peak is stronger and sharp, shows that degree of graphitization slightly improves.
Thermogravimetric weightless test is carried out in spherical carbon material-2 (B) that prepare non-acidizing in the spherical carbon material (D) of the after-souring of modifying through tartrate 6, the inventive method being prepared and contrast experiment, test result is shown in accompanying drawing 6, as shown in Figure 6, first weightlessness below 300 DEG C be due to the water of physical adsorption remove and the decomposition of part low temperature pyrogenation functional group causes, weight loss is in 10% left and right, rich acid carbon ball D is higher, more stable than the decomposition temperature of unacidified carbon ball B.Weightlessness between 300-800 DEG C do not have in mainly due to sample carbonization completely part decomposes and causes, weight loss is approximately 51%, the weight loss of these two kinds of carbon materials in interval is more or less the same.
The preparation method of 2 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.65g glucose and 0.5357g tartrate are joined in the deionized water of 12ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 15ml, under 180 DEG C of conditions, reacted 24h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 4h under the condition of 350 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.2mmol/g, and the acidity of the spherical carbon material of after-souring is 6.9mmol/g.
The preparation method of 3 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.65g glucose and 0.5357g tartrate are joined in the deionized water of 12ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 15ml, under 160 DEG C of conditions, reacted 24h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 7h under the condition of 250 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.0mmol/g, and the acidity of the spherical carbon material of after-souring is 6.2mmol/g.
The preparation method of 4 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.65g glucose and 0.8203g citric acid are joined in the deionized water of 12ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 15ml, under 180 DEG C of conditions, reacted 20h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 3h under the condition of 300 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.2mmol/g, and the acidity of the spherical carbon material of after-souring is 6.5mmol/g.
The preparation method of 5 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.65g glucose, 0.8203g citric acid and 1.0714g tartrate three mixture are joined in the deionized water of 17ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 20ml, under 180 DEG C of conditions, reacted 22h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 3h under the condition of 350 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.6mmol/g, and the acidity of the spherical carbon material of after-souring is 6.9mmol/g.
The preparation method of 6 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 0.825g sucrose and 1.1167g oxysuccinic acid are joined in the deionized water of 17ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 20ml, under 200 DEG C of conditions, reacted 18h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 3h under the condition of 300 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 3.7mmol/g, and the acidity of the spherical carbon material of after-souring is 6.1mmol/g.
The preparation method of 7 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 0.6125g lactose and 0.525g oxalic acid are joined in the deionized water of 12ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 15ml, under 180 DEG C of conditions, reacted 20h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 3h under the condition of 300 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.1mmol/g, and the acidity of the spherical carbon material of after-souring is 6.5mmol/g.
The preparation method of 8 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.65g fructose and 2ml vinylformic acid are joined in the deionized water of 25ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 30ml, under 200 DEG C of conditions, reacted 18h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 3h under the condition of 350 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 5.0mmol/g, and the acidity of the spherical carbon material of after-souring is 7.0mmol/g.
The preparation method of 9 one kinds of spherical carbon materials of rich acidic group of embodiment
1) 3.0g Mierocrystalline cellulose and 2.0333g phenylformic acid are joined in the deionized water of 45ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 50ml, under 180 DEG C of conditions, reacted 20h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 5h under the condition of 250 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.7mmol/g, and the acidity of the spherical carbon material of after-souring is 6.3mmol/g.
The preparation method of 10 1 kinds of spherical carbon materials of rich acidic group of embodiment
1) 0.825g maltose and 0.1105g Whitfield's ointment, 1.05ml propanedioic acid, 0.1168g hexanodioic acid are joined in the deionized water of 25ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 30ml, under 180 DEG C of conditions, reacted 24h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 5h under the condition of 300 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 5.1mmol/g, and the acidity of the spherical carbon material of after-souring is 7.2mmol/g.
The preparation method of 11 1 kinds of spherical carbon materials of rich acidic group of embodiment
1) 1.0g starch and 0.464g coffic acid, 0.672g hydroxyethylsulfonic acid are joined in the deionized water of 25ml, at room temperature stir, it is mixed, become colourless transparent solution.
2) colourless transparent solution is transferred in the autoclave of 30ml, under 210 DEG C of conditions, reacted 19h.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 70 DEG C, be dried to obtain the spherical carbon material of an acidifying.
3) the spherical carbon material of an acidifying of gained is reacted to 5h under the condition of 300 DEG C in retort furnace.Be cooled to room temperature by obtaining product after reaction, filter, be washed till neutrality with deionized water and ethanol, at 80 DEG C, the spherical carbon material of dry after-souring, is the spherical carbon material of target product richness acidic group.
The acidity of the spherical carbon material of one time acidifying is 4.8mmol/g, and the acidity of the spherical carbon material of after-souring is 6.9mmol/g.
Claims (5)
1. a preparation method for the spherical carbon material of rich acidic group, is characterized in that comprising the steps:
1) taking carbohydrate or polyvinyl alcohol as carbon template, mix with organic acid, be dissolved in deionized water, obtain colourless transparent solution;
2) colourless transparent solution is transferred in stainless steel cauldron, at 160-210 DEG C, reaction 18-24h obtains product, product after filtration, washing, obtain the spherical carbon material of an acidifying after dry;
3) the spherical carbon material of an acidifying is placed in to retort furnace, under the condition of 200-450 DEG C, reacts 3-10h, after having reacted, obtain product, product obtains target product after washing to neutral, filtration, being dried.
2. the preparation method of the spherical carbon material of rich acidic group according to claim 1, is characterized in that: described carbohydrate is glucose, sucrose, lactose, fructose, Mierocrystalline cellulose, maltose or starch.
3. the preparation method of the spherical carbon material of rich acidic group according to claim 1, is characterized in that: described organic acid is one or more mixing of citric acid, tartrate, oxysuccinic acid, oxalic acid, vinylformic acid, phenylformic acid, Whitfield's ointment, coffic acid, propanedioic acid, hexanodioic acid or hydroxyethylsulfonic acid.
4. the preparation method of the spherical carbon material of rich acidic group according to claim 1, is characterized in that: carbon template and organic acid mass ratio are 1:0.1-2.5.
5. the preparation method of the spherical carbon material of rich acidic group according to claim 1, is characterized in that: every gram of carbon template adds 7ml-24ml deionized water.
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| CN106938841A (en) * | 2017-05-22 | 2017-07-11 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Monodisperse carboxyl colloidal carbon nanoparticles and preparation method thereof |
| CN106938841B (en) * | 2017-05-22 | 2020-08-04 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Monodisperse carboxylated colloidal carbon nanoparticles and preparation method thereof |
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