CN106268968A - A kind of preparation method and application of chitosan loaded composite titania material - Google Patents
A kind of preparation method and application of chitosan loaded composite titania material Download PDFInfo
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- CN106268968A CN106268968A CN201610855448.0A CN201610855448A CN106268968A CN 106268968 A CN106268968 A CN 106268968A CN 201610855448 A CN201610855448 A CN 201610855448A CN 106268968 A CN106268968 A CN 106268968A
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- Prior art keywords
- tetracycline
- titania material
- loaded composite
- composite titania
- chitosan loaded
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004098 Tetracycline Substances 0.000 claims description 34
- 229960002180 tetracycline Drugs 0.000 claims description 34
- 229930101283 tetracycline Natural products 0.000 claims description 34
- 235000019364 tetracycline Nutrition 0.000 claims description 34
- 150000003522 tetracyclines Chemical class 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 12
- 239000004408 titanium dioxide Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 4
- 238000002798 spectrophotometry method Methods 0.000 claims description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 244000144972 livestock Species 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000004971 Cross linker Substances 0.000 abstract 1
- 238000009395 breeding Methods 0.000 abstract 1
- 230000001488 breeding effect Effects 0.000 abstract 1
- 239000002906 medical waste Substances 0.000 abstract 1
- 239000011858 nanopowder Substances 0.000 abstract 1
- 230000001699 photocatalysis Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 229940072172 tetracycline antibiotic Drugs 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002101 Chitin Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 244000144977 poultry Species 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006196 deacetylation Effects 0.000 description 1
- 238000003381 deacetylation reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0211—Compounds of Ti, Zr, Hf
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to the preparation method and application of a kind of chitosan loaded composite titania material.Prepared by this composite concretely comprises the following steps: be first dispersed in the acetum of chitosan by titanic oxide nano powder, utilize glutaraldehyde as cross linker to improve the mechanical strength of composite, be eventually adding sodium hydroxide and make chitosan gel rubber precipitation obtain product.The preparation technology of this product is simple and convenient to operate, preparation cost is low.The composite prepared have stronger removal ability to the Fourth Ring in water body, and easily separates from water body.This product can be used for the process of livestock breeding wastewater, pharmaceutical wastewater, medical waste water etc..
Description
Technical field
The invention belongs to environmental friendly material and water processes new technical field, be specifically related to a kind of chitosan loaded titanium dioxide
The preparation method and application of composite.
Background technology
Antibiotics worldwide receives extensive concern to the pollution problem of environment.Tetracycline antibiotics
There is broad spectrum activity, and cheap, it is widely used during livestock and poultry cultivation.China is the production of tetracycline antibiotics and makes
With big country, there is substantial amounts of tetracycline antibiotics every year for feed additive and poultry medicine.Research shows, animal is taken in
Antibiotic major part can be excreted by urine and feces.Tetracycline can cause water ecological environment unbalance after entering water body,
The drinking water safety of the mankind is produced harm.Therefore, it is badly in need of seeking effective ways and removes the tetracycline in water body.The mainly side of process
Method has absorption method, photocatalytic method, oxidizing process, hyperfiltration, bioanalysis etc..Wherein absorption method and photocatalytic method are research at present
Focus.Rapidly the tetracycline in water body can be enriched in by adsorption process the surface of adsorbing material, water is processed up to standard.So
And the tetracycline being enriched in adsorbing material surface may produce secondary pollution to environment after desorbing.Photocatalytic method uses
The photohole that produces under illumination condition of photocatalyst and free radical can be by tetracycline exhaustive oxidation, end product is water
And carbon dioxide.Therefore, photocatalytic method is more thorough to the removal of tetracycline.
In photocatalytic method, photocatalysis efficiency is affected the characteristic that bigger factor is photocatalyst.Titanium dioxide is normal
Photocatalyst, but it is strong to the response of light, and the photo-generated carrier produced easily is combined.And, titanium dioxide is to dirt
The accumulation ability of dye thing is the strongest.It addition, powder titanium dioxide nano material is easily dispersed in water, it is difficult to after having processed point
From.It is thus desirable to be modified powdered titanium dioxide processing.Chitosan, also known as chitosan, is extensively to be deposited by nature
A kind of material rich in amino of obtaining through deacetylation of chitin.Chitosan heavy metal, Organic substance and nitrogen phosphorus
Deng there being stronger absorbability.Using chitosan as the carrier of titanium dioxide, the accumulation ability of titanium dioxide can be improved, also
Its solid-liquid separation capability can be improved.The composite prepared can possess the photo-catalysis capability of titanium dioxide, possesses again
The absorbability of chitosan, can absorption and two processes of photocatalysis combine, and tetracycline is effectively and up hill and dale from water the most at last
Body is removed.
Summary of the invention
The technical problem to be solved is: the deficiency existed for prior art, it is provided that a kind of process simple and
It is easily achieved the preparation method of the chitosan loaded composite titania material of industrialized production, and a kind of easy to implement, place
Reason efficiency chitosan loaded composite titania material high, that operating cost is low, simple to operate is applied to remove Fourth Ring in water body
The method of element.
For solving above-mentioned technical problem, the present invention provides the preparation side of a kind of chitosan loaded composite titania material
Method, specifically comprises the following steps that
(1) being added in 10～2000 mL acetums by 1～100 g chitosans, the mass concentration of described acetum is 0.5
～5%, to dissolve the stirred in water bath of 10～80 DEG C, described mixing speed is 100～1200 r/min；
(2) the titanium dioxide aqueous suspensions that 10～500 mL mass concentrations are 10～100 g/L is added the solution described in step (1)
In, stirring reaction 10～120 min；
(3) by 10～100 mL mass concentrations be 1～5% glutaraldehyde solution add in the solution described in step (2), stirring is extremely
Gel separates out, and stands 1～24 h；
(4) gel is smashed to pieces, add the NaOH solution that molar concentration is 0.1～2 mol/L, regulate pH to 8～11, in temperature be
The water-bath of 10～80 DEG C is reacted 1～6 h, by the acetone soln immersion 1～5 that the gel mass concentration of gained is 10～40%
Secondary, and wash with water to neutrality, obtain final chitosan loaded composite titania material after lyophilization.
The present invention also provides for a kind of method that above-mentioned chitosan loaded composite titania material removes tetracycline, including
Following steps:
Taking a certain amount of tetracycline wastewater, the mass concentration of described tetracycline wastewater is 1～1000 mg/L, molten with NaOH or HCl
It is 2～10 that liquid adjusts the pH value of tetracycline wastewater, and a certain amount of chitosan loaded composite titania material is added tetracycline
In waste water, the addition in every liter of waste water is calculated as 0.5～20 g with chitosan loaded composite titania material dry weight, unglazed
Reacting 10～120 min by magnetic stirrer under the conditions of according to, hereafter, add ultraviolet light, on magnetic stirring apparatus, stirring is anti-
Answer 1～24 h, and to control reaction temperature be 10～40 DEG C, by chitosan loaded composite titania material from molten after having reacted
Liquid separates, remaining tetracycline determined by ultraviolet spectrophotometry in solution.
Compared with prior art, it is an advantage of the current invention that:
1. the chitosan loaded composite titania material used in the method for the present invention, its primary raw material wide material sources, and valency
Lattice are cheap；
2. the chitosan loaded composite titania material used in the method for the present invention, its preparation technology is simple, it is easy to accomplish
Industrialized production.
3. tetracycline wastewater can effectively be processed by the method for the present invention, and processing procedure is simple to operate, for antibiotic
The improvement of waste water provides new approach.
Accompanying drawing explanation
Fig. 1 is the electromicroscopic photograph of the chitosan loaded composite titania material of the embodiment of the present invention 1.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
Embodiment 1:
The preparation method of a kind of chitosan loaded composite titania material of the present invention, specifically comprises the following steps that
(1) adding in 200 mL acetums by 4 g chitosans, the mass concentration of described acetum is 1%, at the water of 50 DEG C
Stirring and dissolving in bath, described mixing speed is 800 r/min；
(2) adding in the solution described in step (1) by the titanium dioxide aqueous suspensions that 50 mL mass concentrations are 20 g/L, stirring is anti-
Answer 30 min；
(3) glutaraldehyde solution that 20 mL mass concentrations are 2% is added in the solution described in step (2), stirs to gel precipitation,
Stand 12 h；
(4) gel is smashed to pieces, add the NaOH solution that molar concentration is 1 mol/L, regulate pH to 10, at the water that temperature is 50 DEG C
Bath is reacted 2 h, the acetone soln that gel mass concentration is 20% of gained is soaked 3 times, and wash with water to neutrality, freezing
Obtain final chitosan loaded composite titania material after drying.
The electron microscopic picture of above-mentioned prepared chitosan loaded composite titania material is as it is shown in figure 1, titanium dioxide is uniform
It is distributed on chitin carrier.
Embodiment 2:
The chitosan loaded composite titania material of present invention tetracycline in photochemical catalytic oxidation waste water, including following step
Rapid:
Adding the chitosan loaded composite titania material that 2 g embodiments 1 prepare to volume is 1 L, and concentration is 50 mg/L
Tetracycline wastewater in, the pH value adjusting tetracycline wastewater with NaOH or HCl solution is 4～8, uses magnetic force under non-illuminated conditions
Agitator stirring reaction 30 min, hereafter, add ultraviolet light, stirring reaction 12 h on magnetic stirring apparatus, and control reaction temperature
Degree is 30 DEG C, is separated by chitosan loaded composite titania material after having reacted from solution, remaining Fourth Ring in solution
Element determined by ultraviolet spectrophotometry.The clearance result calculated is as shown in table 1:
Chitosan loaded composite titania material is removed the impact of tetracycline in water by table 1:pH value
| PH value | 4 | 5 | 6 | 7 | 8 |
| Tetracycline clearance (%) | 99 | 98 | 99 | 97 | 94 |
As shown in Table 1, in the range of pH value is 4～8, tetracycline in water body is gone by chitosan loaded composite titania material
Except efficiency is higher, reach more than 94%.
Embodiment 3:
The chitosan loaded composite titania material of present invention tetracycline in photochemical catalytic oxidation waste water, including following step
Rapid:
Adding the chitosan loaded composite titania materials that 2 g embodiments 1 prepare to volume is 1 L, concentration is 50,100,
In the tetracycline wastewater of 200 mg/L, the pH value adjusting tetracycline wastewater with NaOH or HCl solution is 6, under non-illuminated conditions
React 30 min by magnetic stirrer, hereafter, add ultraviolet light, stirring reaction 12 h on magnetic stirring apparatus, and control
Reaction temperature is 30 DEG C, is separated by chitosan loaded composite titania material after having reacted from solution, remains in solution
Tetracycline determined by ultraviolet spectrophotometry.The clearance result calculated is as shown in table 1:
Table 2: the tetracycline initial concentration impact on chitosan loaded composite titania material removal efficiency
| Tetracycline initial concentration (mg/L) | 50 | 100 | 200 |
| Tetracycline clearance (%) | 99 | 89 | 74 |
As shown in Table 2, ultra violet lamp is after 12 hours, tetracycline initial concentration is 50,100,200 mg/L time clearance divide
It is not 99%, 89% and 74%.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
With present inventive concept without the various process programs of substantial differences all in protection scope of the present invention.
Claims (2)
1. a preparation method for chitosan loaded composite titania material, specifically comprises the following steps that
(1) being added in 10～2000 mL acetums by 1～100 g chitosans, the mass concentration of described acetum is 0.5
～5%, to dissolve the stirred in water bath of 10～80 DEG C, described mixing speed is 100～1200 r/min；
(2) the titanium dioxide aqueous suspensions that 10～500 mL mass concentrations are 10～100 g/L is added the solution described in step (1)
In, stirring reaction 10～120 min；
(3) by 10～100 mL mass concentrations be 1～5% glutaraldehyde solution add in the solution described in step (2), stirring is extremely
Gel separates out, and stands 1～24 h；
(4) gel is smashed to pieces, add the NaOH solution that molar concentration is 0.1～2 mol/L, regulate pH to 8～11, in temperature be
The water-bath of 10～80 DEG C is reacted 1～6 h, by the acetone soln immersion 1～5 that the gel mass concentration of gained is 10～40%
Secondary, and wash with water to neutrality, obtain final chitosan loaded composite titania material after lyophilization.
2. chitosan loaded composite titania material as claimed in claim 1 remove tetracycline a method, including with
Lower step:
Taking a certain amount of tetracycline wastewater, the mass concentration of described tetracycline wastewater is 1～1000 mg/L, molten with NaOH or HCl
It is 2～10 that liquid adjusts the pH value of tetracycline wastewater, and a certain amount of chitosan loaded composite titania material is added tetracycline
In waste water, the addition in every liter of waste water is calculated as 0.5～20 g with chitosan loaded composite titania material dry weight, unglazed
Reacting 10～120 min by magnetic stirrer under the conditions of according to, hereafter, add ultraviolet light, on magnetic stirring apparatus, stirring is anti-
Answer 1～24 h, and to control reaction temperature be 10～40 DEG C, by chitosan loaded composite titania material from molten after having reacted
Liquid separates, remaining tetracycline determined by ultraviolet spectrophotometry in solution.
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| CN201610855448.0A CN106268968A (en) | 2016-09-28 | 2016-09-28 | A kind of preparation method and application of chitosan loaded composite titania material |
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| CN201610855448.0A CN106268968A (en) | 2016-09-28 | 2016-09-28 | A kind of preparation method and application of chitosan loaded composite titania material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042095A (en) * | 2017-06-16 | 2017-08-15 | 北京工业大学 | A kind of preparation method and application of chitosan ferrotitanium compound compound adsorbent |
| CN107349965A (en) * | 2017-06-16 | 2017-11-17 | 中国科学院上海硅酸盐研究所 | A kind of adsorption photochemical catalysis hydrogel material and its application in the cooperative photocatalysis sewage production hydrogen of heavy metallic poison is reversed |
| CN108311115A (en) * | 2018-01-30 | 2018-07-24 | 中南林业科技大学 | A kind of chitosan magnetic load TiO2The preparation and its application of composite material |
| CN108939908A (en) * | 2018-08-02 | 2018-12-07 | 褚福友 | A kind of photodissociation oxidation fission VOC processing unit |
| CN111995789A (en) * | 2020-03-25 | 2020-11-27 | 武汉纺织大学 | Hydrophilic resin for catalytic degradation of antibiotics and preparation method and application thereof |
| CN112387006A (en) * | 2019-08-13 | 2021-02-23 | 深圳市美兆环境股份有限公司 | Silver-titanium dioxide-chitosan composite antibacterial filter material and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042095A (en) * | 2017-06-16 | 2017-08-15 | 北京工业大学 | A kind of preparation method and application of chitosan ferrotitanium compound compound adsorbent |
| CN107349965A (en) * | 2017-06-16 | 2017-11-17 | 中国科学院上海硅酸盐研究所 | A kind of adsorption photochemical catalysis hydrogel material and its application in the cooperative photocatalysis sewage production hydrogen of heavy metallic poison is reversed |
| CN107042095B (en) * | 2017-06-16 | 2019-10-08 | 北京工业大学 | A kind of preparation method and application of chitosan-ferrotitanium compound compound adsorbent |
| CN108311115A (en) * | 2018-01-30 | 2018-07-24 | 中南林业科技大学 | A kind of chitosan magnetic load TiO2The preparation and its application of composite material |
| CN108939908A (en) * | 2018-08-02 | 2018-12-07 | 褚福友 | A kind of photodissociation oxidation fission VOC processing unit |
| CN108939908B (en) * | 2018-08-02 | 2020-09-18 | 褚福友 | Photodissociation oxidation fission VOC processing apparatus |
| CN112387006A (en) * | 2019-08-13 | 2021-02-23 | 深圳市美兆环境股份有限公司 | Silver-titanium dioxide-chitosan composite antibacterial filter material and preparation method thereof |
| CN111995789A (en) * | 2020-03-25 | 2020-11-27 | 武汉纺织大学 | Hydrophilic resin for catalytic degradation of antibiotics and preparation method and application thereof |
| CN111995789B (en) * | 2020-03-25 | 2022-09-27 | 武汉纺织大学 | Hydrophilic resin for catalytic degradation of antibiotics and preparation method and application thereof |
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