CN108557802A - The method for preparing cellulose carbon aerogels using agricultural wastes - Google Patents
The method for preparing cellulose carbon aerogels using agricultural wastes Download PDFInfo
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- CN108557802A CN108557802A CN201810660538.3A CN201810660538A CN108557802A CN 108557802 A CN108557802 A CN 108557802A CN 201810660538 A CN201810660538 A CN 201810660538A CN 108557802 A CN108557802 A CN 108557802A
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- agricultural wastes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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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
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0095—Preparation of aerosols
Abstract
The invention belongs to technical field of biomass resource utilization, are related to the preparation of cellulose carbon aerogels more particularly to a kind of method preparing cellulose carbon aerogels using agricultural wastes.The present invention is first impregnated annual biomass agricultural wastes with organic solvent, wash, crush after with inorganic acid solution remove metal ion；Then to obtain fiber extract after 50~90 DEG C of pyrolysis of lye, then purifying cellulose is bleached with liquid lime chloride；70~40 DEG C of 30~40 h of freeze-drying obtain cellulose aerogels；After last 600~1000 DEG C of heat preservations 4~6 h carbonizations to obtain the final product.The present invention is using agricultural wastes as raw material, using freeze-drying and one step carbonization combination, using the original three-D space structure of biological material, the various sizes of duct being connected with each other has been constructed again, it assigns material excellent stability, elasticity and electric conductivity, has expanded application range.It is expected to walk out the low predicament of current biomass resource utilization, moreover it is possible to the carbon-based functional material of the multi-functional biomass of Development of Novel.
Description
Technical field
The invention belongs to technical field of biomass resource utilization, are related to the preparation more particularly to one of cellulose carbon aerogels
The method that kind prepares cellulose carbon aerogels using agricultural wastes.
Background technology
China is a large agricultural country, there is bright cultivation culture, establishes rational farming rule.But with when
The development in generation, traditional Agricultural Development Model are increasingly not suitable with modern Ecological Concept.In resources effective utilization, intensive management
Today, agricultural wastes have been processed into urgent problem to be solved.The stacking at random of a large amount of stalks, not only can serious waste money
Source will also become the inducement of fire.Before several years, the burning of Large Area of Crops stalk is the main of early winter pollutant after autumn harvest
Source.Prohibit after burning stalk, the comprehensive utilization of stalk becomes the significant concern point of modern agricultural development.
The processing of the annual biomass agricultural wastes such as stalk causes great puzzlement to people.In national policy
Under guiding, there is the method for comprehensive utilization of large quantities of stalks.Development in pluralism is presented in the comprehensive utilization of stalk, has crushing also
Field, also have and make ensilage, is also used as mushroom culture medium and carries out thermal power generation etc. as fuel.But mostly
Counting method has that processing is simple, added value is small and utilization rate is not high, and development one kind can effectively improve agricultural wastes
The method of added value of product and utilization rate has great importance to environmental carrying capacity and resource reallocation.
Biological material has source wide, and at low cost, the high feature of carbon content is to prepare carbon aerogels material most to have application
The raw material of foreground.The carbon aerogels that biological material based on cellulose is prepared form spongy three-dimensional net structure,
Various sizes of duct has been constructed in length, the interconnection of variform fiber, imparts the excellent mechanical stability of material, bullet
Property and electric conductivity.Excellent electricity that carbon aerogels material has, mechanics, absorption, it is corrosion-resistant, the performances such as can repeatedly recycle, it
Research and application have potential economic benefit and social benefit, all in absorption, electrochemistry, biomedicine and catalyst load etc.
There is preferable application prospect in multi-field.
Invention content
In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is disclose a kind of utilization agricultural wastes preparation
The method for preparing cellulose carbon aerogels using agricultural wastes.
Technical solution：
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, pre-processes：It is added based on 2~20 g agricultural wastes by the organic solvent of every 100 mL, is immersed into organic solvent
In 2~5 h, washed 3~5 times with ethyl alcohol and deionized water respectively after taking-up, be ground into the fragment of 0.5~3 cm, immerse 3~
10%, preferably 5% inorganic acid solution removes metal ion, obtains pretreated agricultural wastes；
B), cellulose extracts：By every 100 mL, 2~6 wt%, the pretreated agriculturals of 1~5 g are added in the aqueous slkali of preferably 4 wt%
Waste meter, 2~5 h are mixed at 50~90 DEG C, and preferably 80 DEG C 3 h of mixing take out after cooling and filter, use deionization
It is neutrality to be washed to filter residue, collects to obtain fiber extract；
C), bleaching process purifies：At 50~90 DEG C, preferably 80 DEG C, 1~5 g fibers are added by the liquid lime chloride of every 100 mL
Extract meter, is immersed into liquid lime chloride, after stirring 3~6 h, is washed to neutrality, is obtained pure with deionized water after cooling
Cellulose after change；
D), prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:0.5~1:4 meters, it is excellent
Select 1:1, fiber is uniformly mixed with deionized water, is divided in freeze-drying pipe, -70~-40 DEG C of 30~40 h of freeze-drying,
It is preferred that -55 DEG C of 35 h of freeze-drying, obtain cellulose aerogels；
E), prepared by cellulose carbon aerogels：Under nitrogen protection, cellulose aerogels are placed in tube furnace, by room temperature with 3~
10 DEG C/min, the rate of preferably 5 DEG C/min is warming up to 600~1000 DEG C, and heat preservation 4~6 h carbonizations, preferably 800 DEG C keep the temperature 4 h,
Then it is slowly dropped to room temperature, takes out to obtain the final product.
In the more excellent disclosed example of the present invention, step a）The organic solvent be toluene, ethyl alcohol, one kind in tetrahydrofuran or
A variety of to be mixed with arbitrary proportion, the inorganic acid solution is hydrochloric acid or one kind in nitric acid or is mixed with arbitrary proportion.
In the more excellent disclosed example of the present invention, step b）The aqueous slkali be NaOH or KOH in one kind or with arbitrary proportion
Mixing.
In the more excellent disclosed example of the present invention, step c）The liquid lime chloride is prepared by sodium hypochlorite, acetic acid and deionized water
It forms, wherein the mass ratio of sodium hypochlorite and acetic acid is 1:0.3~1:0.5, the mass ratio of sodium hypochlorite and deionized water is 1:
15~1:25.
According to carbon aerogels made from the method for the invention, the carbon fiber naturally distorted is carried by flat belt-like and is mutually handed over
Connection forms spongy three-dimensional net structure；A diameter of 7~10 μm of its single fiber, carbon fiber surface are coarse and with torsion
It is bent.
Advantageous effect
The present invention to derive from a wealth of sources, low-cost agricultural wastes as raw material, using freeze-drying and one step carbonization letter
Single group is closed, and using the original three-D space structure of biological material, has been constructed the various sizes of duct being connected with each other again, has been assigned
The excellent stability of material, elasticity and electric conductivity have been given, the application range of material has been expanded.It not only facilitates and breaks away from current biological
The low predicament of matter resource utilization, and contribute to the carbon-based functional material of the multi-functional biomass of Development of Novel.
Description of the drawings
The SEM image for the carbon aerogels that Fig. 1 present invention is prepared using agricultural wastes；
The SEM image for the carbon aerogels single fiber that Fig. 2 present invention is prepared using agricultural wastes.
Specific implementation mode
The following describes the present invention in detail with reference to examples, so that those skilled in the art more fully understand this hair
It is bright, but the invention is not limited in following embodiments.
Embodiment 1
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, is added based on the pretreated maize peels of 10 g by every 100 mL ethyl alcohol, maize peel is submerged into 3 h in ethanol, is then used
Ethyl alcohol and deionized water are washed 3 times respectively, are ground into the fragment of 1.5cm square, obtain pretreated maize peel, a concentration of 5% hydrochloric acid
Metal ion is removed in leaching.
B), cellulose extracts：It is added based on the pretreated maize peels of 3 g by the NaOH solution of every 100 mL, 4 wt%, 80 DEG C
It after NaOH solution and raw material are mixed after magnetic agitation 3h, takes out and filters after cooling, be washed with deionized until filter residue is
Neutrality, the fiber extract collected.
C) bleaching process：It is added based on 3 g fiber extracts by every 100 mL liquid lime chlorides, is carried in 80 DEG C of celluloses
It is acetic acid to take object to be immersed in quality proportioning：Sodium hypochlorite：Deionized water=1:3:It is cooling after 3 h of magnetic agitation in 60 solution
Deionized water is washed to neutrality afterwards, obtains cellulose after purification.
D) prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:1 meter, will be fine
Dimension element is uniformly mixed with deionized water, is divided in freeze-drying pipe, 35 h are lyophilized at -55 DEG C, obtain cellulose aerogels.
E) prepared by cellulose carbon aerogels：Cellulose aerogels are carbonized in tube furnace, and temperature is set as by room temperature with 5
DEG C/speed of min is warming up to 800 DEG C, 4 h of temperature is kept, room temperature is then slowly dropped to, the functional material is made, overall process exists
It is carried out under nitrogen protection, nitrogen flow rate is 300 cm3/min。
Embodiment 2
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, is added based on the pretreated Cotton Stalk skins of 3 g by every 100 mL toluene, cotton stalk skin is immersed in 3 h in toluene,
Then it is washed respectively 5 times with ethyl alcohol and deionized water, is ground into the fragment of 1.5 cm square, obtain pretreated cotton stalk skin,
Metal ion is removed in 4% hydrochloric acid leaching.
B), cellulose extracts：It is added based on the pretreated cotton stalk skins of 3 g by the NaOH solution of every 100 mL, 4 wt%,
80 DEG C, by after 3 h of magnetic agitation after NaOH solution and raw material mixing, are taken out after cooling and are filtered, is washed with deionized until filtering
Slag is neutrality, the fiber extract collected.
C) bleaching process：It is added based on 3 g fiber extracts by every 100 mL liquid lime chlorides, is carried in 80 DEG C of celluloses
It is acetic acid to take object to be immersed in quality proportioning：Sodium hypochlorite：Deionized water=1:3:It is cooling after 3 h of magnetic agitation in 60 solution
Deionized water is washed to neutrality afterwards, obtains cellulose after purification.
D) prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:1.2 meters, will
Cellulose is uniformly mixed with deionized water, is divided in freeze-drying pipe, 40h is lyophilized at -55 DEG C, obtains cellulose aerogels.
E) prepared by cellulose carbon aerogels：Cellulose aerogels are carbonized in tube furnace, and temperature is set as by room temperature with 5
DEG C/speed of min is warming up to 800 DEG C, 4 h of temperature is kept, room temperature is then slowly dropped to, the functional material is made, overall process exists
It is carried out under nitrogen protection, nitrogen flow rate 300cm3/min。
Embodiment 3
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, is added based on the pretreated maize peels of 3 g by every 100 mL tetrahydrofurans, bagasse is immersed in 4 h in tetrahydrofuran,
Then it is washed respectively 4 times with ethyl alcohol and deionized water, is ground into the fragment of 1.5cm square, obtain pretreated bagasse, 4% hydrochloric acid
Metal ion is removed in leaching.
B), cellulose extracts：It is added based on the pretreated bagasse of 3 g by the NaOH solution of every 100 mL, 4 wt%, 80 DEG C
It after NaOH solution and raw material are mixed after 4 h of magnetic agitation, takes out and filters after cooling, be washed with deionized until filter residue is
Neutrality, the fiber extract collected.
C) bleaching process：It is added based on 3 g fiber extracts by every 100 mL liquid lime chlorides, is carried in 80 DEG C of celluloses
It is acetic acid to take object to be immersed in quality proportioning：Sodium hypochlorite：Deionized water=1:3:It is cooling after 3 h of magnetic agitation in 60 solution
Deionized water is washed to neutrality afterwards, obtains cellulose after purification.
D) prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:1.1 meters, will
Cellulose is uniformly mixed with deionized water, is divided in freeze-drying pipe, 40 h are lyophilized at -55 DEG C, obtain cellulose aerogels.
E) prepared by cellulose carbon aerogels：Cellulose aerogels are carbonized in tube furnace, and temperature is set as by room temperature with 5
DEG C/speed of min is warming up to 800 DEG C, 4 h of temperature is kept, room temperature is then slowly dropped to, the functional material is made, overall process exists
It is carried out under nitrogen protection, nitrogen flow rate 300cm3/min。
Embodiment 4
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, is added based on the pretreated maize peels of 3 g by every 100 mL toluene, maize peel is immersed in 3 h in toluene, is then used
Ethyl alcohol and deionized water are washed 5 times respectively, are ground into the fragment of 1.5 cm square, obtain pretreated maize peel, 4% hydrochloric acid leaching
Remove metal ion.
B), cellulose extracts：It is added based on the pretreated maize peels of 3 g by the NaOH solution of every 100 mL, 4 wt%, 80 DEG C
It after NaOH solution and raw material are mixed after 3 h of magnetic agitation, takes out and filters after cooling, be washed with deionized until filter residue is
Neutrality, the fiber extract collected.
C) bleaching process：It is added based on 3 g fiber extracts by every 100 mL liquid lime chlorides, is carried in 80 DEG C of celluloses
It is acetic acid to take object to be immersed in quality proportioning：Sodium hypochlorite：Deionized water=1:3:It is cooling after 3 h of magnetic agitation in 60 solution
Deionized water is washed to neutrality afterwards, obtains cellulose after purification.
D) prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:1.2 meters, will
Cellulose is uniformly mixed with deionized water, is divided in freeze-drying pipe, 40 h are lyophilized at -55 DEG C, obtain cellulose aerogels.
E) prepared by cellulose carbon aerogels：Cellulose aerogels are carbonized in tube furnace, and temperature is set as by room temperature with 5
DEG C/speed of min is warming up to 800 DEG C, 4 h of temperature is kept, room temperature is then slowly dropped to, the functional material is made, overall process exists
It is carried out under nitrogen protection, nitrogen flow rate is 300 cm3/min。
Embodiment 5
A method of cellulose carbon aerogels being prepared using agricultural wastes, are included the following steps：
A) it, is added based on the pretreated Cotton Stalk skins of 3 g by every 100 mL tetrahydrofurans, cotton stalk skin is immersed in tetrahydrofuran
In 4 h, then washed respectively 4 times with ethyl alcohol and deionized water, crush 1.5 cm square fragment, obtain pretreated cotton straw
Metal ion is removed in stalk skin, 4% hydrochloric acid leaching.
B), cellulose extracts：It is added based on the pretreated cotton stalk skins of 3 g by the NaOH solution of every 100 mL, 4 wt%,
80 DEG C, by after 4 h of magnetic agitation after NaOH solution and raw material mixing, are taken out after cooling and are filtered, is washed with deionized until filtering
Slag is neutrality, the fiber extract collected.
C) bleaching process：It is added based on 3 g fiber extracts by every 100 mL liquid lime chlorides, is carried in 80 DEG C of celluloses
It is acetic acid to take object to be immersed in proportioning：Sodium hypochlorite：Deionized water=1:3:In 60 solution, after 3 h of magnetic agitation, gone after cooling
Ion water washing obtains cellulose after purification to neutrality.
D) prepared by cellulose aerogels：It is 1 by the purifying cellulose of moistening and the volume ratio of deionized water:1.1 meters, will
Cellulose is uniformly mixed with deionized water, is divided in freeze-drying pipe, 40 h are lyophilized at -55 DEG C, obtain cellulose aerogels.
E) prepared by cellulose carbon aerogels：Cellulose aerogels are carbonized in tube furnace, and temperature is set as by room temperature with 5
DEG C/speed of min is warming up to 800 DEG C, 4 h of temperature is kept, room temperature is then slowly dropped to, the functional material is made, overall process exists
It is carried out under nitrogen protection, nitrogen flow rate 300cm3/min。
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of method preparing cellulose carbon aerogels using agricultural wastes, which is characterized in that include the following steps：
A) it, is added based on 2~20 g agricultural wastes by the organic solvent of every 100mL, is immersed into 2~5 h in organic solvent,
It is washed 3~5 times with ethyl alcohol and deionized water respectively after taking-up, is ground into the fragment of 0.5~3 cm, immerse 3~10% preferably 5%
Inorganic acid solution removes metal ion, obtains pretreated agricultural wastes；
B) it, is added based on the pretreated agricultural wastes of 1~5 g by 2~6 wt% aqueous slkalis of every 100 mL, is mixed at 50~90 DEG C
2~5 h are stirred, takes out and filters after cooling, it is neutrality to be washed with deionized water to filter residue, collects to obtain fiber extract；
C) it, at 50~90 DEG C, preferably 80 DEG C, is added based on 1~5 g fiber extracts by the liquid lime chloride of every 100 mL, by it
It is immersed in liquid lime chloride, after stirring 3~6 h, is washed to neutrality with deionized water after cooling, obtain cellulose after purification；
D) it is, 1 by the volume ratio of the purifying cellulose of moistening and deionized water:0.5~1:4 meters, fiber and deionized water are mixed
It closes uniformly, is divided in freeze-drying pipe, -70~-40 DEG C of 30~40 h of freeze-drying obtain cellulose aerogels；
E), under nitrogen protection, cellulose aerogels are placed in tube furnace, are heated up with the rate of 3~10 DEG C/min by room temperature
To 600~1000 DEG C, then heat preservation 4~6 h carbonizations are slowly dropped to room temperature, take out to obtain the final product.
2. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
A) organic solvent is that toluene, ethyl alcohol, one or more in tetrahydrofuran are mixed with arbitrary proportion, and the inorganic acid is molten
Liquid is hydrochloric acid or one kind in nitric acid or is mixed with arbitrary proportion.
3. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
B) described to be added based on the pretreated agricultural wastes of 1~5 g by the aqueous slkali of every 100 mL, 4 wt%, 80 DEG C are mixed 3
h。
4. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
B) aqueous slkali be NaOH or KOH in one kind or mixed with arbitrary proportion.
5. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
c）It is described at 80 DEG C, by every 100 mL liquid lime chloride be added 1~5 g fiber extracts based on.
6. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
c）The liquid lime chloride is formulated by sodium hypochlorite, acetic acid and deionized water, and the mass ratio of wherein sodium hypochlorite and acetic acid is
1:0.3~1:0.5, the mass ratio of sodium hypochlorite and deionized water is 1:15~1:25.
7. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
d）The volume ratio by the purifying cellulose and deionized water that moisten is 1:1.
8. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
d）It is described to be uniformly mixed fiber with deionized water, it is divided in freeze-drying pipe, -55 DEG C of 35 h of freeze-drying obtain cellulose airsetting
Glue.
9. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
e）It is described that cellulose aerogels are placed in tube furnace under nitrogen protection, it is heated up with the rate of 5 DEG C/min by room temperature.
10. the method for preparing cellulose carbon aerogels using agricultural wastes according to claim 1, it is characterised in that：Step
Rapid e）It is described to be warming up to 800 DEG C of heat preservation 4 h carbonizations.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364877A (en) * | 2018-11-23 | 2019-02-22 | 江苏大学 | A kind of preparation method and applications of superhydrophobic fibers carbon aerogels |
| CN109665511A (en) * | 2019-02-28 | 2019-04-23 | 广东工业大学 | A method of carbon nano-fiber aeroge is prepared by plant fiber |
| CN110975771A (en) * | 2019-11-18 | 2020-04-10 | 中国空间技术研究院 | Method for preparing carbon-nitrogen aerogel material based on alkali-thermal method |
| CN111889072A (en) * | 2020-07-23 | 2020-11-06 | 江苏大学 | Preparation of magnesium-aluminum bimetal oxide modified straw biomass charcoal composite material and application of composite material in removing phosphorus in wastewater |
| WO2021001557A1 (en) | 2019-07-03 | 2021-01-07 | Futamura Chemical Uk Ltd | Extraction method |
| CN113462400A (en) * | 2021-06-21 | 2021-10-01 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Cellulose-based doped carbon aerogel for in-situ passivation and restoration of heavy metal contaminated soil and preparation method thereof |
| CN113663609A (en) * | 2021-08-30 | 2021-11-19 | 内蒙古农业大学 | Double-network aerogel and preparation method and application thereof |
| CN114195118A (en) * | 2021-11-30 | 2022-03-18 | 暨南大学 | Method for preparing biomass conductive carbon by taking straws as raw materials |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364877A (en) * | 2018-11-23 | 2019-02-22 | 江苏大学 | A kind of preparation method and applications of superhydrophobic fibers carbon aerogels |
| CN109665511A (en) * | 2019-02-28 | 2019-04-23 | 广东工业大学 | A method of carbon nano-fiber aeroge is prepared by plant fiber |
| WO2021001557A1 (en) | 2019-07-03 | 2021-01-07 | Futamura Chemical Uk Ltd | Extraction method |
| CN110975771A (en) * | 2019-11-18 | 2020-04-10 | 中国空间技术研究院 | Method for preparing carbon-nitrogen aerogel material based on alkali-thermal method |
| CN110975771B (en) * | 2019-11-18 | 2022-05-24 | 中国空间技术研究院 | Method for preparing carbon-nitrogen aerogel material based on alkali-thermal method |
| CN111889072A (en) * | 2020-07-23 | 2020-11-06 | 江苏大学 | Preparation of magnesium-aluminum bimetal oxide modified straw biomass charcoal composite material and application of composite material in removing phosphorus in wastewater |
| CN113462400A (en) * | 2021-06-21 | 2021-10-01 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Cellulose-based doped carbon aerogel for in-situ passivation and restoration of heavy metal contaminated soil and preparation method thereof |
| CN113462400B (en) * | 2021-06-21 | 2023-01-03 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Cellulose-based doped carbon aerogel for in-situ passivation and restoration of heavy metal contaminated soil and preparation method thereof |
| CN113663609A (en) * | 2021-08-30 | 2021-11-19 | 内蒙古农业大学 | Double-network aerogel and preparation method and application thereof |
| CN113663609B (en) * | 2021-08-30 | 2022-11-08 | 内蒙古农业大学 | Double-network aerogel and preparation method and application thereof |
| CN114195118A (en) * | 2021-11-30 | 2022-03-18 | 暨南大学 | Method for preparing biomass conductive carbon by taking straws as raw materials |
| CN114195118B (en) * | 2021-11-30 | 2023-06-16 | 暨南大学 | Method for preparing biomass conductive carbon by taking straw as raw material |
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