CN110721675A - Photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen - Google Patents
Photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen Download PDFInfo
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- CN110721675A CN110721675A CN201911020422.4A CN201911020422A CN110721675A CN 110721675 A CN110721675 A CN 110721675A CN 201911020422 A CN201911020422 A CN 201911020422A CN 110721675 A CN110721675 A CN 110721675A
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- manganese dioxide
- carbon dioxide
- thylakoid
- releasing oxygen
- capturing carbon
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000001301 oxygen Substances 0.000 title claims abstract description 18
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 17
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 14
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 84
- 210000002377 thylakoid Anatomy 0.000 claims abstract description 47
- 239000002131 composite material Substances 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 17
- 239000007853 buffer solution Substances 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 241000219315 Spinacia Species 0.000 claims description 3
- 235000009337 Spinacia oleracea Nutrition 0.000 claims description 3
- 238000007146 photocatalysis Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000000338 in vitro Methods 0.000 abstract description 2
- 230000000243 photosynthetic effect Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 210000003763 chloroplast Anatomy 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 2
- 102000019197 Superoxide Dismutase Human genes 0.000 description 2
- 108010012715 Superoxide dismutase Proteins 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000011664 nicotinic acid Substances 0.000 description 2
- 210000003463 organelle Anatomy 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 235000016425 Arthrospira platensis Nutrition 0.000 description 1
- 240000002900 Arthrospira platensis Species 0.000 description 1
- 241000195628 Chlorophyta Species 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 229920004890 Triton X-100 Polymers 0.000 description 1
- 239000013504 Triton X-100 Substances 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002149 hierarchical pore Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940082787 spirulina Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
-
- 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
- B01J31/32—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of manganese, technetium or rhenium
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/04—Plant cells or tissues
Abstract
The invention discloses a photocatalytic material for rapidly capturing carbon dioxide to release oxygen, which is prepared by using the photocatalytic oxygen release performance of extracted in-vitro thylakoids and manganese dioxide and adopting a material compounding preparation method, so that the photosynthetic efficiency of thylakoids is further improved. The material has the advantages of easy obtaining, simple preparation method, mild preparation conditions, environmental friendliness, no pollution, biodegradability and the like, and has potential application prospects in the field of environmental protection, particularly air purification.
Description
Technical Field
The invention belongs to the technical field of photocatalytic bionic materials, and particularly relates to a bionic composite material with functions of capturing carbon dioxide and releasing oxygen.
Background
Photosynthesis is the process of green plants and algae absorbing light energy, combining carbon dioxide and water into energy-rich organic matter, and releasing oxygen. Wherein chlorophyll on the thylakoid membrane in chloroplasts converts light energy into chemical energy. Compared with whole cells, the separate thylakoid system has multiple advantages, for example, the intact thylakoid membrane can better protect intramembrane proteins, and composite proteins playing a main role can keep better stability; thylakoids themselves may also provide efficient and complete electron transport pathways and do not require nutrients to maintain. The Bao-Lian Su topic group embeds thylakoids into a silica matrix. However, the light-capturing ability after embedding is reduced. It has been found that the light conversion efficiency is improved when the photosynthetic organelles are combined with organic supramolecular or inorganic semiconductor materials. For example, Tao et al successfully prepare the visible light catalyzed hierarchical pore spirulina/TiO with surface dye sensitization modification by a hydrothermal method2The composite material has a complex experimental operation process, and a hydrothermal method is not beneficial to the retention of the biological functions of organelles. Research shows that superoxide radical generated by photosynthesis can be converted into H under the action of superoxide dismutase containing manganese2O2And O2Thereby improving the oxygen release performance. Manganese dioxide as a semiconductor material has the band gap energy of 0.26-0.70 eV, has the advantages of unique pore channel structure and layered structure, large specific surface area, excellent high specific capacity, easy formation of hydroxyl group under the action of water and the like, and is expected to become a potential catalytic material for improving photosynthesis.
Disclosure of Invention
The invention aims to provide a photocatalytic material which has the advantages of easily obtained raw materials, simple preparation method, mild preparation conditions, environmental protection and functions of reducing environmental carbon dioxide and releasing oxygen.
The photocatalysis material adopted for solving the technical problems is a composite material of extracted isolated thylakoids and manganese dioxide, and is prepared by the following method: dispersing complete thylakoids extracted from fresh plant leaves in a PBS buffer solution to prepare a 2-4 mg/mL thylakoid suspension; dispersing nano manganese dioxide particles in a PBS buffer solution, and preparing a manganese dioxide dispersion liquid of 10-20 mu mol/L by ultrasonic; and then uniformly mixing the thylakoid suspension and the manganese dioxide dispersion liquid according to the volume ratio of 100:1, and refrigerating the mixture at the temperature of 0-4 ℃ for 1-2 hours in a dark place to prepare the thylakoid/manganese dioxide composite material.
The fresh plant leaf is any one of fresh spinach leaf, rape leaf and the like.
The nano manganese dioxide is preferably manganese dioxide particles with the particle size of 200-300 nm.
The pH value of the PBS buffer solution is 7.6-7.8.
The invention directly and uniformly mixes the complete thylakoids extracted from the fresh plant leaves with manganese dioxide to prepare the photocatalytic material with the functions of reducing carbon dioxide and releasing oxygen. Compared with the prior art, the invention has the following outstanding characteristics:
1. the raw material selected by the invention is the extracted in-vitro thylakoid, the thylakoid membrane can protect intramembrane protein which plays a main role, so that the intramembrane electron transfer path is kept complete, and the preparation method is simple and convenient, the manganese dioxide reserves are rich, the property is unique, and the price is low.
2. The invention utilizes the photocatalytic activity of manganese dioxide to compound the manganese dioxide with isolated thylakoids so as to improve the performance of absorbing carbon dioxide and releasing oxygen, and the superoxide dismutase containing manganese can catalyze the superoxide radical to be converted into H under the illumination condition2O2And O2Reducing the existence of hyperoxidation and being beneficial to protecting the integrity of cell membranes.
3. The preparation method of the photocatalytic material is simple, has no environmental pollution, good degradability, mild reaction conditions and strong operability, and the obtained photocatalytic material is suitable for the environment-friendly field of air purification and the like.
Drawings
Fig. 1 is a scanning electron micrograph of thylakoids extracted in example 1.
FIG. 2 is a diagram showing the distribution of elements of the thylakoid/manganese dioxide composite obtained in example 1.
FIG. 3 is a graph showing the comparison of the amount of oxygen released per unit between the thylakoid suspension and the thylakoid/manganese dioxide composite materials obtained in examples 1 to 2 and comparative examples 1 to 3.
FIG. 4 is a graph showing a comparison of the absorption of carbon dioxide between the thylakoid suspension and the thylakoid/manganese dioxide composite obtained in examples 1 to 2 and comparative examples 1 to 3.
Detailed Description
The invention is further illustrated with reference to the figures and examples, but the scope of the invention is not limited to these examples.
Example 1
Selecting fresh spinach leaves with complete leaves, dark colors and thick leaves, cleaning, then sucking water by using filter paper and removing leaf stem veins in the leaves, then weighing 10g of the leaves, shearing the leaves, putting the leaves into an ice-cold mortar, adding 100mL of PBS buffer solution with the pH value of 7.8 for three times, and simultaneously quickly grinding the leaves into slurry. Subsequently, the suspension was filtered through 4 layers of gauze having a pore size of 400 mesh, and the filtrate was centrifuged to obtain a precipitate, which was suspended by adding 3mL of PBS buffer solution having a pH of 7.6 to obtain a chloroplast suspension. To the obtained chloroplast suspension was added 20mL of an aqueous solution containing 2g of NaCl and 2mL of Triton X-100, the mixture was incubated at 50 ℃ for 15 minutes, and then the mixture was refrigerated in a refrigerator until a precipitate was generated, the precipitate was washed with a PBS buffer solution having a pH of 7.6 by centrifugation, and then the precipitate was suspended in 3mL of a PBS buffer solution having a pH of 7.6 to prepare a 4mg/mL thylakoid suspension. As shown in FIG. 1, the extracted thylakoids are intact and uniform in size, about 200-300 nm, and no damage is generated.
Dispersing 0.086 mu g of manganese dioxide particles with the particle size of 300nm in 1mL of PBS buffer solution with the pH value of 7.6, ultrasonically dispersing for 30min, and then cooling in a refrigerator at 0-4 ℃ to prepare a manganese dioxide dispersion liquid with the concentration of 10 mu mol/L. 1mL of thylakoid suspension with the concentration of 4mg/mL and 10 MuL of manganese dioxide dispersion with the concentration of 10 Mumol/L are mixed evenly and refrigerated in a refrigerator at 4 ℃ for 1 hour in a dark place to obtain the thylakoid/manganese dioxide composite material. It can be observed from FIG. 2 that the C, O elements are distributed more uniformly, indicating that the thylakoids are well dispersed; the distribution diagram of the manganese element can observe that manganese dioxide particles are uniformly dispersed on the surface of the isolated thylakoid body, so that an ideal mixed state is achieved, and the manganese dioxide and the thylakoid body have a good composite effect.
Example 2
In this example, 4mg/mL thylakoid suspension and 20 μmol/L manganese dioxide dispersion were mixed uniformly at a volume ratio of 100:1, and refrigerated in a refrigerator at 4 ℃ for 1 hour in the dark to obtain a thylakoid/manganese dioxide composite material.
Comparative example 1
Uniformly mixing 4mg/mL thylakoid suspension and 30 mu mol/L manganese dioxide dispersion according to the volume ratio of 100:1, and refrigerating in a refrigerator at 4 ℃ in a dark place for 1 hour to obtain the thylakoid/manganese dioxide composite material.
Comparative example 2
Uniformly mixing 4mg/mL thylakoid suspension and 40 mu mol/L manganese dioxide dispersion according to the volume ratio of 100:1, and refrigerating in a refrigerator at 4 ℃ in a dark place for 1 hour to obtain the thylakoid/manganese dioxide composite material.
Comparative example 3
Uniformly mixing 4mg/mL thylakoid suspension and 50 mu mol/L manganese dioxide dispersion according to the volume ratio of 100:1, and refrigerating in a refrigerator at 4 ℃ in a dark place for 1 hour to obtain the thylakoid/manganese dioxide composite material.
The inventor uses a liquid-phase oxygen electrode to detect the thylakoid/manganese dioxide composite materials obtained in examples 1-2 and comparative examples 1-3 and a thylakoid suspension (as a comparative example) with a concentration of 4mg/mL under visible light irradiation of a xenon lamp, and the results are shown in FIG. 3 and FIG. 4. As can be seen from the figure, the composite material formed by adding manganese dioxide to the thylakoid suspension has a tendency to increase and then decrease in performance with increasing manganese dioxide content. Among them, when the manganese dioxide content is 20. mu. mol/L, the composite material has the best performance. This is probably because too much manganese dioxide will generate more active oxygen, destroy thylakoid structure, reduce its performance; it is also possible that excessive manganese dioxide deposits on the thylakoid surface, inhibiting its performance.
Claims (5)
1. A photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen is characterized in that: the photocatalysis composite material is a composite material of extracted isolated thylakoids and manganese dioxide.
2. The photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen according to claim 1, is characterized in that: dispersing complete thylakoids extracted from fresh plant leaves in a PBS buffer solution to prepare a 2-4 mg/mL thylakoid suspension; dispersing nano manganese dioxide particles in a PBS buffer solution, and preparing a manganese dioxide dispersion liquid of 10-20 mu mol/L by ultrasonic; and then uniformly mixing the thylakoid suspension and the manganese dioxide dispersion liquid according to the volume ratio of 100:1, and refrigerating the mixture at the temperature of 0-4 ℃ for 1-2 hours in a dark place to prepare the thylakoid/manganese dioxide composite material.
3. The photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen according to claim 2, is characterized in that: the fresh plant leaves are any one of fresh spinach leaves and rape leaves.
4. The photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen according to claim 2, is characterized in that: the particle size of the nano manganese dioxide is 200-300 nm.
5. The photocatalytic material for rapidly capturing carbon dioxide and releasing oxygen according to claim 2, is characterized in that: the pH value of the PBS buffer solution is 7.6-7.8.
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Cited By (1)
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CN112209633A (en) * | 2020-10-12 | 2021-01-12 | 陕西师范大学 | Composite film material with function of photolysis oxygen production |
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2019
- 2019-10-25 CN CN201911020422.4A patent/CN110721675A/en active Pending
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