CN106472495B - A kind of high-ratio surface sucrose silkworm excrement carbon composite and the preparation method and application thereof - Google Patents

A kind of high-ratio surface sucrose silkworm excrement carbon composite and the preparation method and application thereof Download PDF

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CN106472495B
CN106472495B CN201610812072.5A CN201610812072A CN106472495B CN 106472495 B CN106472495 B CN 106472495B CN 201610812072 A CN201610812072 A CN 201610812072A CN 106472495 B CN106472495 B CN 106472495B
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silkworm excrement
sucrose
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zncl
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CN106472495A (en
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赵钟兴
王欣辉
陶萌良
赵祯霞
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Guangxi University
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Toxicology (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention discloses a kind of high-ratio surface sucrose silkworm excrement carbon composites and the preparation method and application thereof.Faeces bombycis is prepared into carbonization silkworm excrement under protective gas；Sucrose powder and carbonization silkworm excrement are mixed, ZnCl is added2Solution is placed in high speed machine ball mill oscillation activated grafting and reacts to obtain sucrose/ZnCl2/ silkworm excrement slurry, slurry is directly dried and obtains composite material crude product；Again by composite material crude product and ZnCl2Mixing carries out activation reaming reaction under protective gas, high-ratio surface sucrose silkworm excrement carbon composite is obtained after then cleaning, be centrifuged and drying again, in terms of which is applied to the slow controlled release of pesticide.The present invention carries out sucrose and silkworm excrement to be grafted compound and activator ZnCl using high speed machine oscillation2Mixing and primary activation, significantly promoted two kinds of materials grafting recombination reaction speed and activator silkworm excrement composite material surface dispersion degree, obtained carbon composite specific surface area with higher and polar group containing O, have higher adsorption capacity and preferable slow-releasing and controlled-releasing action to pesticide.

Description

A kind of high-ratio surface sucrose silkworm excrement carbon composite and the preparation method and application thereof
Technical field
The invention belongs to carbon composite technical fields, and in particular to sucrose silkworm excrement composite material and preparation method with answer With.
Background technique
Pesticide can efficiently control the harm of disease, worm, grass and other harmful organisms to crops, it is as chemical prevention Important means, play irreplaceable role in agricultural production.However, pesticide only a small amount of in specific time can arrive Up to crop target site, and most of pesticide is directly released into natural environment and causes pesticide utilization efficiency low.This part is not The pesticide for playing drug effect can cause Practice for Pesticide Residue in Agricultural Products exceeded, injury and environmental pollution to non-target organism etc. many negative Face problem.The utilization efficiency and Targeting delivery function for how effectively improving pesticide are urgently to be resolved main of current pesticide field One of problem.
Slow controlled-release technology is that one kind can be such that pesticide activity component slowly releases within given time by physically or chemically means It is put in target site, and drug concentration is made to maintain the novel medicine feeding technology of effective concentration or more in a long time, and it is biological Porous charcoal is one of the main representative that can be applied to slow controlled-release technology.Silkworm excrement is the main waste of silkworm industry, is passed through in rural area Chang Suiyi discarding lead to environmental pollution, from Electron microscope from known to its with natural three-dimensional drape structure and phosphorus content height, High-ratio surface multiporous biological charcoal, and its surface N (O) group also rich in can be obtained through high temperature cabonization and activation.Sucrose It is also a kind of high carbon containing and oxygen containing biomolecule, is distributed widely in plant, especially content in beet, sugarcane and fruit It is high, it is the carbon source material of sustainable (renewable) acquisition of the mankind.
In conventional pesticide molecule mostly containing polar group (carboxyl, carbonyl, sulfur-bearing and containing cl radical etc.), and this portion Polarity group is also the dominant reactive part in pesticide, these polar groups can be with N (O) group knot in silkworm excrement, sucrose It closes.If silkworm excrement, sucrose to be combined into new porous carbon material, while adjusting porous charcoal pore size and N (O) group content just The adsorption capacity that pesticide and Carbon Materials can be regulated and controled reaches the slow-releasing and controlled-releasing action to pesticide.
Summary of the invention
The invention proposes a kind of high-ratio surface sucrose silkworm excrement carbon composites and the preparation method and application thereof, using high speed Mechanical oscillation method can make sucrose and silkworm excrement in dozens of minutes while quick graft reaction, by activator ZnCl2Sufficiently With sucrose/silkworm excrement composite material mixes and primary activation, then by high-temperature activation counter-boring techniques high-ratio surface is formed, reached simultaneously Regulate and control the purpose of N (O) group content.Which not only improves the combined coefficienies of material, and can increase substantially composite material Yield realizes the purpose of slow controlled release.
The purpose of the present invention is achieved through the following technical solutions:
A kind of high-ratio surface sucrose silkworm excrement carbon composite, the three-dimensional pore space knot which is constituted with sucrose and charing silkworm excrement Structure, Langmuir specific surface area are 1000-1400m2/ g, total pore volume is in 0.3-0.6cm3/ g, wherein micropore specific area and hole Appearance accounts for the 50~70% of total specific surface area and Kong Rong.
The preparation method of high-ratio surface sucrose silkworm excrement composite material of the invention, includes the following steps:
(1) in N2, Faeces bombycis passed through into high temperature cabonization reaction preparation carbonization silkworm excrement in the protective gas such as Ar atmosphere；
(2) ZnCl for being 0.25~0.30g/mL by sucrose powder, carbonization silkworm excrement and mass concentration2Solution mixing, is placed in High speed machine vibrates ball mill sealing oscillation, speed control in 1000~1200 turns/min, the graft reaction time 30~ 60min obtains sucrose/ZnCl2/ silkworm excrement slurry, then slurry is directly dried obtain composite material crude product；
(3) composite material crude product acquired in step (2) is subjected to reaming reaction in protective gas, it is then clear again High-ratio surface sucrose charcoal silkworm excrement carbon composite is obtained after washing, be centrifuged and drying.Cleaning is rushed using dilute hydrochloric acid and deionized water It washes 1~3 time.
As the further preferred of scheme, the carburizing temperature of Faeces bombycis is at 500-1000 DEG C in step (1), the reaction time 2 ~4h.
As the further preferred of scheme, carbonization silkworm excrement and ZnCl in the step (2)2The plastid ratio of solution be 1:(4~ 10)。
As the further preferred of scheme, composite material crude product and ZnCl in the step (3)2Mixed mass ratio is 1:(2~4).
As the further preferred of scheme, the reaming reaction temperature is 500~700 DEG C, and the reaction time is 0.5~5h. Optimum reaction condition is that reaming reaction temperature is 550~650 DEG C, and the reaction time is 2~3h.
In terms of high-ratio surface sucrose silkworm excrement carbon composite of the invention can be applicable to medicine sustained and controlled release, especially pesticide is slow In terms of controlled release.
Product of the present invention, which is applied, delays controlled release field in pesticide, adsorbs anabasine pesticide Diacloden using the composite material, Absorption carriage amount can reach 500mg/g or more, and can prepare and delay controlled release farm chemical carrier within the scope of 15~60 days effective time of sustained release (using 90% Diacloden of total volume as endpoint calculation).
Compared with prior art, the present invention is advantageous in that:
The change that mechanical energy produced by 1. the present invention is vibrated using high speed machine can quickly cause sucrose between the silkworm excrement that is carbonized Reaction is learned, graft reaction speed of the sucrose on carbonization silkworm excrement is significantly promoted and greatly shortens the reaction time, while again can be with It avoids filtering brought product loss.
2. compared to the hydro-thermal of existing composite material or solvent-thermal method etc., Mechanical Method synthetic method preparation of the present invention Sucrose silkworm excrement activated carbon composite can greatly reduce the usage amount to solvent, can effectively reduce waste liquid discharging amount, synthesize the present invention Cheng Gengwei is environmentally protective, and the harm to environment has been reduced or avoided.
3. the present invention, which prepares sucrose silkworm excrement activated carbon composite by Mechanical Method, can directly obtain composite material crude product, while being added ZnCl2Solution is soaked, first is that can be rotated by the quick of mechanical activation by ZnCl2It is sufficiently mixed with sucrose/silkworm excrement material； Second is that passing through the superelevation mechanical energy and temperature ZnCl that instant shock generates when mechanical activation2Composite material is carried out tentatively living Change, while without further being separated to solution, eliminating the process of solution separation, improving efficiency.
4. the raw materials used in the present invention silkworm excrement has native three dimensional pleated structure and contains a large amount of carboxyls, hydroxyl and amino base Group, can be grafted the micro scale channel formed after its carbonization treatment to form sucrose silkworm excrement carbon composite with sucrose, then pass through ZnCl2Activation can form high-ratio surface porous structure on the composite, can there is higher adsorption capacity to pesticide.Together When composite material surface group containing O the adsorption capacity between pesticide and composite material can be had an important influence on, since sucrose is high Compound containing O can control the quantity of composite material surface group containing O by adjusting the graft reaction ratio of silkworm excrement and sucrose, And then regulate and control the adsorption capacity between pesticide and composite material, achieve the purpose that slow controlled release.
5. composite material prepared by the present invention is for adsorbing anabasine pesticide Diacloden, adsorbance can reach 500mg/g or more can prepare sustained-release pesticides load of the slow-release time within the scope of 15~60 days by regulating and controlling sucrose graft ratio Body (using 90% Diacloden of total volume as endpoint calculation).
Detailed description of the invention
Fig. 1 is Faeces bombycis electron-microscope scanning figure.
Fig. 2 is 1 high-ratio surface sucrose silkworm excrement carbon composite electron-microscope scanning figure of embodiment.
Fig. 3 difference slow-release material load capacity curve
Fig. 4 difference slow-release material is sustained release profiles
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples, but the scope of protection of present invention is not It is confined to the range of embodiment statement.
Embodiment 1
A kind of preparation method of high-ratio surface sucrose silkworm excrement composite material, includes the following steps,
(1) in N210.0g Faeces bombycis is raised to 500 DEG C with the heating rate of 5 DEG C/min in atmosphere, and is protected at 500 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after holding 5.0h or more.
(2) sucrose powder and 0.25g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 1.0mL mass concentration, which is added, is The ZnCl of 0.25g/L2Solution；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1000 turns/ Min, graft reaction time are 60min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 80 DEG C of drying of slurry obtain composite material crude product；
(3) by composite material crude product acquired in step (2) in N2500 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and keep 5.0h to carry out reaming reaction at 500 DEG C and obtained solid is dissolved in 1mol/L's to be cooled to room temperature naturally Cleaning dissolution unreacted ZnCl in HCl2, it reuses after deionized water is cleaned to pH ≈ 7 and is centrifuged, be placed in baking oven and be dried overnight, High-ratio surface sucrose silkworm excrement carbon composite is obtained after drying.
Embodiment 2
(1) in N210.0g Faeces bombycis is raised to 600 DEG C with the heating rate of 5 DEG C/min in atmosphere, and is protected at 600 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after holding 4.0h or more.
(2) sucrose powder and 0.5g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 3.0mL mass concentration, which is added, is The ZnCl of 0.30g/L2Solution alcohol；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1050 turns/ Min, graft reaction time are 50min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 80 DEG C of drying of slurry obtain composite material crude product.
(3) by composite material crude product acquired in step (2) in N2550 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and 4.0h is kept at 550 DEG C, to be cooled to room temperature naturally, obtained solid is dissolved in the HCl of 1mol/L and cleans dissolution Unreacted ZnCl2, reuse after deionized water is cleaned to pH ≈ 7 and be centrifuged, be placed in baking oven and be dried overnight, high ratio is obtained after drying Surface sucrose silkworm excrement carbon composite.
Embodiment 3
(1) in N210.0g Faeces bombycis is raised to 700 DEG C with the heating rate of 5 DEG C/min in atmosphere, and is protected at 700 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after holding 3.0h or more.
(2) sucrose powder and 0.75g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 5.5mL mass concentration, which is added, is The ZnCl of 0.25g/L2Solution；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1100 turns/ Min, graft reaction time are 45min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 90 DEG C of drying of slurry obtain composite material crude product.
(3) by composite material crude product acquired in step (2) in N2600 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and 3.0h is kept at 600 DEG C, to be cooled to room temperature naturally, obtained solid is dissolved in the HCl of 1mol/L and cleans dissolution Unreacted ZnCl2, reuse after deionized water is cleaned to pH ≈ 7 and be centrifuged, be placed in baking oven and be dried overnight, high ratio is obtained after drying Surface sucrose silkworm excrement carbon composite.
Embodiment 4
(1) in N210.0g Faeces bombycis is raised to 800 DEG C with the heating rate of 5 DEG C/min in atmosphere, and is protected at 650 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after holding 3.0h or more.
(2) sucrose powder and 1.0g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 8.0mL mass concentration, which is added, is The ZnCl of 0.30g/L2Solution；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1100 turns/ Min, graft reaction time are 45min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 80 DEG C of drying of slurry obtain composite material crude product.
(3) by composite material crude product acquired in step (2) in N2600 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and 2.0h is kept at 600 DEG C, to be cooled to room temperature naturally, obtained solid is dissolved in the HCl of 1mol/L and cleans dissolution Unreacted ZnCl2, reuse after deionized water is cleaned to pH ≈ 7 and be centrifuged, be placed in baking oven and be dried overnight, high ratio is obtained after drying Surface sucrose silkworm excrement carbon composite.
Embodiment 5
(1) in N210.0g Faeces bombycis is raised to 900 DEG C with the heating rate of 5 DEG C/min in atmosphere, and is protected at 1000 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after holding 2.0h or more.
(2) sucrose powder and 1.25g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 11.0mL mass concentration, which is added, is The ZnCl of 0.25g/L2Solution；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1150 turns/ Min, graft reaction time are 40min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 85 DEG C of drying of slurry obtain composite material crude product.
(3) by composite material crude product acquired in step (2) in N2650 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and 1.0h is kept at 650 DEG C, to be cooled to room temperature naturally, obtained solid is dissolved in the HCl of 1mol/L and cleans dissolution Unreacted ZnCl2, reuse after deionized water is cleaned to pH ≈ 7 and be centrifuged, be placed in baking oven and be dried overnight, high ratio is obtained after drying Surface sucrose silkworm excrement carbon composite.
Embodiment 6
(1) in N210.0g Faeces bombycis is raised to 1000 DEG C with the heating rate of 5 DEG C/min in atmosphere, and at 1000 DEG C Room temperature, preparation carbonization silkworm excrement are cooled to after keeping 0.5h or more.
(2) sucrose powder and 1.5g the carbonization silkworm excrement of 0.25g is placed in ball grinder, 15.0mL mass concentration, which is added, is The ZnCl of 0.25g/L2Solution；Ball grinder sealing is placed in high speed machine oscillation ball mill to vibrate, revolving speed is 1200 turns/ Min, graft reaction time are 30min (being that atmospheric pressure sealed carries out in reaction process)；By resulting sucrose/ZnCl2/ silkworm excrement is compound The direct 85 DEG C of drying of slurry obtain composite material crude product.
(3) by composite material crude product acquired in step (2) in N2700 are raised in atmosphere with the heating rate of 5 DEG C/min DEG C, and 0.5h is kept at 700 DEG C, to be cooled to room temperature naturally, obtained solid is dissolved in the HCl of 1mol/L and cleans dissolution Unreacted ZnCl2, reuse after deionized water is cleaned to pH ≈ 7 and be centrifuged, be placed in baking oven and be dried overnight, high ratio is obtained after drying Surface sucrose silkworm excrement carbon composite.
Material properties test:
(1) electron microscope of high-ratio surface sucrose silkworm excrement carbon composite
Using Japanese Hitachi S-3400N type low power scanning electron microscope to 1 institute of Faeces bombycis and the embodiment of the present invention Sucrose silkworm excrement carbon composite obtained carries out the characterization of material surface pattern, as shown in Figure 1 and Figure 2.
Fig. 1 is Faeces bombycis electron-microscope scanning figure, embodies Faeces bombycis tridimensional network.Fig. 2 is high-ratio surface sucrose charcoal silkworm Husky carbon composite electron-microscope scanning figure, it can be seen that after sucrose polymer and grafting and activating is added by mechanical activation, be carbonized A large amount of sucrose beads are formed on silkworm excrement, form sucrose silkworm excrement carbon composite.
(2) pore structure study of sucrose silkworm excrement carbon composite
Using the 3-Flex specific surface pore-size distribution instrument of Micro company, U.S. production to sucrose silkworm excrement prepared by the present invention The pore structure of carbon composite is measured, and the results are shown in Table 1.
The specific surface area and pore-size distribution of the resulting sucrose silkworm excrement carbon composite of 1. 6 kinds of embodiments of table.
Smicro, VtAnd VmicroRespectively indicate specific surface area provided by micropore, Kong Rong provided by total pore volume and micropore.
According to 1 column data of table it is found that the Langmuir ratio of sucrose silkworm excrement carbon composite prepared by six kinds of embodiments Surface area is in 1000-1400m2/ g, total pore volume is about in 0.3-0.6cm3/ g or more, wherein micropore specific area and Kong Rong are accounted for always The 50~70% of specific surface area and Kong Rong.This explanation, in the embodiment of the present invention coverage area, prepares obtained sucrose silkworm Husky carbon composite is a kind of porous carbon material with high specific surface area.
(3) sucrose silkworm excrement carbon composite sustained release performance is analyzed
Pesticide Diacloden absorption carriage amount and sustained release are carried out to sucrose silkworm excrement carbon composite prepared by case study on implementation 2,4,6 Tracing analysis, wherein the adsorption conditions of carbon composite are that 50mg composite slow release material is put into 50mL0.8g/L Diacloden solution Oscillation absorption, vibrates 200 revs/min of revolving speed by 30 DEG C of bath temperature；The sustained release condition of carbon composite is compound after 50mg is adsorbed Slow-release material is put into 120mL deionized water, is changed water 100mL daily, 30 DEG C of bath temperature, is vibrated 200 revs/min of revolving speed, in fact It is as shown in Figure 3, Figure 4 to test result difference.From figure 3, it can be seen that 3 kinds of slow-release materials are in absorption 48 hours back loading amounts of Diacloden All reach 500mg/g or more, and without apparent difference between three kinds of materials, illustrates that such material is imitated with different sustained releases Similar adsorption effect is able to maintain while fruit.From fig. 4, it can be seen that being discharged respectively in completion in 15 days, 30 days and 60 days or so Process (using 90% Diacloden of total volume as endpoint calculation), is able to satisfy the requirement of different times pesticide slow-release.
The above embodiment of the present invention is only intended to clearly illustrate examples made by the present invention, and is not to of the invention The restriction of embodiment.For those of ordinary skill in the art, other can also be made on the basis of the above description Various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all in spirit of the invention With any modifications, equivalent replacements, and improvements made within principle etc., the protection scope of the claims in the present invention should be included in Within.

Claims (6)

1. a kind of preparation method of high-ratio surface sucrose silkworm excrement carbon composite, it is characterised in that: the material is with sucrose and charing The three dimensional pore structures that silkworm excrement is constituted, Langmuir specific surface area are 1000-1400 m2/ g, total pore volume is in 0.3-0.6 cm3/ G, wherein micropore specific area and Kong Rong account for the 50 ~ 70% of total specific surface area and Kong Rong；Preparation method includes the following steps,
(1) Faeces bombycis is reacted into preparation carbonization silkworm excrement by high temperature cabonization in protective gas；
It (2) is in mass ratio that 1:6 ~ 1 is mixed by sucrose powder and carbonization silkworm excrement, addition mass concentration is 0.25 ~ 0.30g/ The ZnCl of mL2After solution, it is placed in high speed machine oscillation ball mill sealing oscillation, speed control connects in 1000 ~ 1200 turns/min The branch reaction time in 30 ~ 60 min, obtains sucrose/ZnCl2/ silkworm excrement slurry, then slurry is directly dried obtain composite material Crude product；
(3) composite material crude product acquired in step (2) is subjected in protective gas reaming reaction, then cleans, is centrifuged again And high-ratio surface sucrose silkworm excrement carbon composite is obtained after drying.
2. the preparation method of high-ratio surface sucrose silkworm excrement carbon composite according to claim 1, it is characterised in that: described Carbonization silkworm excrement and ZnCl in step (2)2The plastid ratio of solution is 1:4 ~ 10.
3. the preparation method of high-ratio surface sucrose silkworm excrement carbon composite according to claim 1, it is characterised in that: described Reaming reaction temperature is 500 ~ 700 oC, and the reaction time is 0.5 ~ 5 h.
4. the preparation method of high-ratio surface sucrose silkworm excrement carbon composite according to claim 1, it is characterised in that: described Reaming reaction temperature is 550 ~ 650 oC, and the reaction time is 2 ~ 3 h.
5. the preparation method of high-ratio surface sucrose silkworm excrement carbon composite according to claim 1, it is characterised in that: step (1) carburizing temperature of Faeces bombycis is in 500-1000 oC, 2 ~ 4 h of reaction time in.
6. the application for the high-ratio surface sucrose silkworm excrement carbon composite that preparation method as described in claim 1 is prepared, special Sign is: its utilization in terms of medicine sustained and controlled release.
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