CN113130758A - Composite nano particle and preparation method and application thereof - Google Patents
Composite nano particle and preparation method and application thereof Download PDFInfo
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- CN113130758A CN113130758A CN201911415939.3A CN201911415939A CN113130758A CN 113130758 A CN113130758 A CN 113130758A CN 201911415939 A CN201911415939 A CN 201911415939A CN 113130758 A CN113130758 A CN 113130758A
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- 239000002131 composite material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims abstract description 89
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- 239000002082 metal nanoparticle Substances 0.000 claims abstract description 83
- 239000000243 solution Substances 0.000 claims abstract description 31
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- 238000000034 method Methods 0.000 claims abstract description 15
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- 239000012670 alkaline solution Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 18
- 239000011257 shell material Substances 0.000 claims description 18
- 239000011162 core material Substances 0.000 claims description 15
- 239000011258 core-shell material Substances 0.000 claims description 14
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000031700 light absorption Effects 0.000 claims description 6
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 5
- -1 benzo ethylene oxide Chemical compound 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- OMIHGPLIXGGMJB-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]hepta-1,3,5-triene Chemical compound C1=CC=C2OC2=C1 OMIHGPLIXGGMJB-UHFFFAOYSA-N 0.000 claims description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
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- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- GWBUNZLLLLDXMD-UHFFFAOYSA-H tricopper;dicarbonate;dihydroxide Chemical group [OH-].[OH-].[Cu+2].[Cu+2].[Cu+2].[O-]C([O-])=O.[O-]C([O-])=O GWBUNZLLLLDXMD-UHFFFAOYSA-H 0.000 claims 1
- 230000027756 respiratory electron transport chain Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 16
- 239000002784 hot electron Substances 0.000 description 14
- 229910052923 celestite Inorganic materials 0.000 description 13
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 13
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 9
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- 238000009825 accumulation Methods 0.000 description 2
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- 238000004220 aggregation Methods 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
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- ZVUZTTDXWACDHD-UHFFFAOYSA-N gold(3+);trinitrate Chemical compound [Au+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O ZVUZTTDXWACDHD-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
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- 229940071536 silver acetate Drugs 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
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- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000000772 tip-enhanced Raman spectroscopy Methods 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/451—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising a metal-semiconductor-metal [m-s-m] structure
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The invention discloses a composite nano particle and a preparation method and application thereof, wherein the method comprises the following steps: providing a solution containing noble metal nano particles, wherein the surfaces of the noble metal nano particles are adsorbed with precursors of the noble metal nano particles; adding an alkaline solution into a solution of water-soluble catechol dye molecules to obtain a mixed solution containing catechol H-aggregates; and mixing the mixed solution with the solution containing the noble metal nano particles to obtain the composite nano particles. The composite nano particle prepared by the invention can realize ultra-fast electron transfer, inhibit plasma resonance on the surface of a core and generate photocurrent.
Description
Technical Field
The invention relates to an active material for a surface plasmon driven thermionic solar cell, in particular to a composite nanoparticle and a preparation method and application thereof.
Background
Surface plasmon resonance is a resonance phenomenon in which free electrons in a metal oscillate collectively under the illumination of incident light at a frequency equal to the oscillation frequency of the electrons; when surface plasmon resonance occurs, free electrons in the metal absorb photon energy, thereby generating obvious extinction characteristics and near-field thermal effect. The surface plasmon resonance effect has been widely applied to the research fields of unmarked biosensors, optical switches, optical waveguides, tip-enhanced raman spectroscopy and the like.
However, the metal nanoparticles have a surface plasmon resonance effect, so that their applications in surface plasmon-driven thermionic solar cells, surface catalytic reactions, and the like are limited to some extent. The inventor researches and discovers that a strong thermal effect generated by the surface plasmon resonance effect of the metal nanoparticles can bring certain hidden troubles to the performance and the safety of the solar cell. Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide a composite nanoparticle, a preparation method and an application thereof, and aims to solve the problem that the surface plasmon resonance effect of the existing metal nanoparticle can bring certain hidden troubles to the performance and safety of a solar cell due to the generated strong thermal effect. The technical scheme of the invention is as follows:
a method for preparing composite nanoparticles, comprising the steps of:
providing a solution containing noble metal nano particles, wherein the surfaces of the noble metal nano particles are adsorbed with precursors of the noble metal nano particles;
adding an alkaline solution into a solution of water-soluble catechol dye molecules to obtain a mixed solution containing catechol H-aggregates;
and mixing the mixed solution with the solution containing the noble metal nano particles to obtain the composite nano particles.
The composite nanoparticle is of a core-shell heterostructure, and comprises a core and a shell formed on the surface of the core, wherein the core is made of noble metal nanoparticles, the shell is made of a benzo ethylene oxide H-aggregate, and the shell is connected with the core through a coordination bond.
A surface plasmon driven thermionic solar cell comprises a surface electrode, a back electrode and a light absorption layer arranged between the surface electrode and the back electrode, wherein the light absorption layer comprises composite nanoparticles prepared by the preparation method; and/or the light absorbing layer comprises composite nanoparticles as described above.
Has the advantages that: according to the invention, noble metal nanoparticles with a certain appearance adsorbed on the surface (a precursor with the noble metal nanoparticles adsorbed on the surface) and preparation liquid containing catechol H-aggregate are mixed to realize that the precursor of the noble metal nanoparticles and the catechol H-aggregate are subjected to oxidation-reduction reaction on the surfaces of the noble metal nanoparticles, and simultaneously, the oxidation product of the catechol H-aggregate and the noble metal nanoparticles are subjected to in-situ coordination to obtain composite nanoparticles with a core-shell heterostructure; in the composite nano particle, the excited dark state energy level of the shell material (the oxidation product of the catechol H-aggregate) can be strongly coupled with hot electrons generated by the noble metal nano particle, and the composite nano particle can rapidly lead out the hot electrons generated by the surface plasma resonance effect of the noble metal nano particle based on the function, thereby inhibiting the photoelectric thermal effect generated by the collective oscillation of the hot electrons on the surface of the noble metal particle.
Drawings
FIG. 1 is a flow chart of an example of a method for preparing composite nanoparticles in an embodiment of the present invention.
FIG. 2 is a schematic diagram of the absorption process of the shell material in the composite nanoparticle for the hot electrons on the surface of the excited core material in the embodiment of the present invention.
Detailed Description
The present invention provides a composite nanoparticle, a method for preparing the same, and applications thereof, and the present invention is further described in detail below in order to make the objects, technical schemes, and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a preparation method of composite nanoparticles, which refers to fig. 1, wherein the preparation method comprises the following steps:
s100, providing a solution containing noble metal nano particles, wherein precursors of the noble metal nano particles are adsorbed on the surfaces of the noble metal nano particles;
s200, adding an alkaline solution into a solution of water-soluble catechol dye molecules to obtain a mixed solution containing catechol H-aggregates;
s300, mixing the mixed solution with the solution containing the noble metal nanoparticles to obtain the composite nanoparticles.
In the embodiment, noble metal nanoparticles with a certain appearance (a precursor with noble metal nanoparticles adsorbed on the surface) are adsorbed on the surface and mixed with a preparation solution containing catechol H-aggregates, so that the precursor of the noble metal nanoparticles and the catechol H-aggregates can perform an oxidation-reduction reaction on the surfaces of the noble metal nanoparticles, and simultaneously, an oxidation product of the catechol H-aggregates and the noble metal nanoparticles can be subjected to in-situ coordination to obtain composite nanoparticles with a core-shell heterostructure; in the composite nano particle, the excited dark state energy level of the shell material (the oxidation product of the catechol H-aggregate) can be strongly coupled with hot electrons generated by the noble metal nano particle, and the composite nano particle can rapidly lead out the hot electrons generated by the surface plasma resonance effect of the noble metal nano particle based on the function, thereby inhibiting the photoelectric thermal effect generated by the collective oscillation of the hot electrons on the surface of the noble metal particle.
The molecular aggregate is an ordered structure (not covalently bound with each other) regularly formed by aggregation of the same or different molecules through extremely weak intermolecular interaction forces (such as hydrogen bonds, pi-pi stacking effect, effect of cations and pi electrons, halogen bonds and the like); the process of molecular aggregation between the same or different molecules through weak interactions is called assembly or self-assembly. In the molecular aggregate, excitation and transfer of energy exist among molecules; the single molecule absorbs photons to generate hot electrons after excitation, and then the single molecule does not limit the hot electrons generated by the single molecule on the single molecule, but transfers to other molecules in the same unit, thereby forming the optical effect of the whole aggregate. Molecular aggregates are generally divided into J-aggregates and H-aggregates. J-aggregates are stacked side-by-side in parallel, while H-aggregates are stacked side-by-side in parallel. Generally, the better the planarity of the molecule, the easier it is to form H-aggregates.
Step S200 specifically includes: dissolving a certain amount of water-soluble catechol dye molecules in distilled water, adding an alkaline solution while carrying out ultrasonic treatment, and carrying out self-assembly on the water-soluble catechol dye molecules to form catechol H-aggregates to obtain a mixed solution containing the catechol H-aggregates.
In one embodiment, the conditions for self-assembling the water-soluble catechol dye molecule are pH 6 to 7.5. The pH value is 6-7.5, and the water-soluble catechol dye molecules can be self-assembled into ordered H-aggregates in a surface-to-surface accumulation mode through the interaction of pi-pi bonds among molecules. When the alkaline solution is added into a solution of water-soluble catechol dye molecules (obtained by dissolving the water-soluble catechol dye molecules in distilled water), the solution of the water-soluble catechol dye molecules undergoes a change process from acidity to neutrality/alkalescence, and the water-soluble catechol dye molecules can gradually self-assemble into ordered H-aggregates in a surface-to-surface accumulation mode.
Further in one embodiment, the conditions for self-assembling the water-soluble catechol dye molecule are pH 7.0. When the pH value of the water-soluble pyrocatechol dye molecule is less than 7.0, the absorption peak is positioned between about 520 and 550nm and is basically coincided with the peak of the resonance plasma of the noble metal nano particle; when the pH value is 7.0, the absorption peak of the water-soluble catechol dye molecule is blue-shifted to between 350 and 400 nm; in the composite nano particle formed by self-assembly and oxidation-reduction reaction, the dark state energy level of the shell material (benzo oxirane H-aggregate) is lower than the hot electron (e) on the surface of the excited core material (noble metal nano particle)-) The position of the energy level; thereby absorbing the hot electrons (e) generated by the excited nuclear material-) The absorption process is shown in fig. 2.
Still further in one embodiment, the power of said ultrasound ranges from 10 to 50W, and/or the time of said ultrasound ranges from 5 to 20 min.
In one embodiment, the method comprisesThe water-soluble catechol dye molecule may be, but is not limited to, celestite blue; the structure of the celestite blue is
In one embodiment, the alkaline solution is obtained by dissolving an alkaline compound in distilled water, the alkaline compound being selected from, but not limited to, at least one of sodium hydroxide, potassium hydroxide, barium hydroxide, calcium hydroxide and ammonia.
Step S300 specifically includes: and mixing and stirring the mixed solution and the solution containing the noble metal nano particles to enable the o-benzenediol H-aggregate and the precursor of the noble metal nano particles to carry out redox reaction on the surfaces of the noble metal nano particles, growing the noble metal obtained by reduction on the surfaces of the noble metal nano particles, coating the surface of the noble metal nano particles with the benzo ethylene oxide H-aggregate obtained by oxidation and carrying out coordination with the metal nano particles, and purifying to obtain the composite nano particles with the core-shell heterostructure.
In one embodiment, the purification process comprises: centrifuging and cleaning; the solvent for cleaning is water.
In one embodiment, the electrode potential of the precursor of the noble metal nanoparticles is greater than the standard electrode potential of the water-soluble catechol dye molecules. Under the condition, a precursor of the noble metal nanoparticles attached to the surfaces of the noble metal nanoparticles and water-soluble catechol dye molecules in a catechol H-aggregate can directly generate an oxidation-reduction reaction at normal temperature, the noble metal obtained by reduction grows on the surfaces of the noble metal nanoparticles, and the benzo ethylene oxide H-aggregate obtained by oxidation is coated on the surfaces of the noble metal nanoparticles to form the composite nanoparticles with the core-shell nano heterostructure: noble metal @ benzo-oxirane H-aggregates.
Further in one embodiment, the stirring rate is 10 to 50r/min, and/or the stirring time is 10 to 30 min.
In one embodiment, the solution containing noble metal nanoparticles is prepared from a precursor of the noble metal nanoparticles by a chemical reduction method.
In one embodiment, the noble metal nanoparticles may be selected from, but not limited to, one of gold nanoparticles, silver nanoparticles, and platinum nanoparticles.
In one embodiment, the precursor of the noble metal nanoparticles may be selected from, but not limited to, one of the water-soluble compounds of gold, silver and platinum. By way of example, the precursor of the noble metal nanoparticles may be selected from, but not limited to, one of gold nitrate, chloroauric acid, silver nitrate, silver acetate, chloroplatinic acid, hydroxyplatinic acid, and diammineplatinum dichloride.
In one embodiment, the noble metal nanoparticles may have a morphology that is, but not limited to, one of rod-like, spherical, regular tetrahedral, regular hexahedral, regular octahedral, regular decahedral, and rectangular parallelepiped.
In one embodiment, the mass ratio of the water-soluble catechol dye molecules to the noble metal nanoparticles is 1-4: 2-5.
The embodiment of the invention provides a composite nanoparticle, wherein the composite nanoparticle has a core-shell heterostructure, and comprises a core and a shell formed on the surface of the core, the core is made of a noble metal nanoparticle, and the shell is made of a benzo ethylene oxide H-aggregate; the shell material is connected to the core material by a coordination bond.
In this embodiment, the composite nanoparticles having a core-shell heterostructure, in which a benzodiol H-aggregate obtained by oxidation-reduction of a catechol H-aggregate self-assembled from water-soluble catechol dye molecules is used as a shell material and noble metal nanoparticles are used as a core material, can realize ultrafast electron transfer, thereby suppressing surface plasmon resonance of the noble metal nanoparticles and generating photocurrent.
In one embodiment, the noble metal nanoparticles may be selected from, but not limited to, one of gold nanoparticles, silver nanoparticles, and platinum nanoparticles.
In one embodiment, the noble metal nanoparticles may have a morphology that is, but not limited to, one of rod-like, spherical, regular tetrahedral, regular hexahedral, regular octahedral, regular decahedral, and rectangular parallelepiped.
In one embodiment, the benzo-oxirane H-aggregates are
The H-aggregate of (1).
The embodiment of the invention provides a surface plasmon driven thermionic solar cell, wherein a light absorption layer comprises composite nanoparticles prepared by the preparation method; and/or the thermal light absorption layer comprises the composite nanoparticles as described in any one of the above.
The present invention will be described in detail below with reference to specific examples.
Example 1
(1) Dissolving 0.02g of celestite blue into 10g of distilled water, and adding a certain amount of sodium hydroxide solution under the condition that the ultrasonic power is 10W to adjust the pH value of the solution to about 7.0 so as to form a celestite blue molecule H-aggregate.
(2) 0.04g of a spherical silver nanoparticle solution (containing silver nanoparticles whose precursor is AgNO)3) Adding the core-shell nano heterogeneous structure into the solution prepared in the step (1), stirring for 20min at the speed of 15r/min, and centrifuging and cleaning to obtain the composite nano particles with the core-shell nano heterogeneous structure; named as composite nano particle-1 for performance test. Wherein, the celestite blue and AgNO3Is represented by the formula
Example 2
(1) Dissolving 0.8g of celestite blue into 20g of distilled water, and adding a certain amount of ammonia water solution under the condition that the ultrasonic power is 50W to adjust the pH value of the solution to be about 7.0 so as to form a celestite blue molecule H-aggregate.
(2) To 0.09g of decahedral platinum nanoparticle solution (containing platinum nanoparticle precursor of chloroplatinic acid) was added in step(1) Stirring the solution prepared in the step (1) for 10min at a speed of 45r/min, and centrifuging and cleaning to obtain the composite nano particles with the core-shell nano heterostructure; named as composite nano particle-2 for performance test. The reaction principle between chloroplatinic acid and celestite blue is the same as that of AgNO in example 13Reaction with celestite blue.
Example 3
(1) Dissolving 0.6g of celestite blue into 15g of distilled water, and adding a certain amount of barium hydroxide solution under the condition that the ultrasonic power is 30W to adjust the pH value of the solution to about 7.0 so as to form a celestite blue molecule H-aggregate.
(2) Adding 0.06g of octahedral gold nanoparticle solution (containing gold nanoparticle precursor of chloroauric acid) into the solution prepared in the step (1), stirring at 25r/min for 30min, centrifuging, and cleaning to obtain composite nanoparticles with core-shell nano heterostructure; named as composite nano particle-3 for performance test. The reaction principle between chloroauric acid and celestite blue is the same as that of AgNO in example 13Reaction with celestite blue.
Example 4
The performance of the composite nanoparticles prepared in examples 1 to 3 and the performance of the noble metal nanoparticles (silver nanoparticles, platinum nanoparticles, and gold nanoparticles used in examples 1 to 3) used in examples 1 to 3 were tested, the test results are shown in table 1, and the comparison analysis of the test data of the composite nanoparticles prepared in each example and the noble metal nanoparticles used in the examples corresponding thereto revealed that the thermal electron relaxation time of the composite nanoparticles prepared in examples 1 to 3 was within the range of 100-; the composite nanoparticles prepared in examples 1-3 have a greater rate of thermionic transfer than the uncoated noble metal nanoparticles. The thermal electron energy generated by the noble metal nano particles subjected to the composite treatment in the embodiment of the invention due to illumination or stimulation of other external factors can be rapidly transferred to the dark state energy level of the shell layer, so that the bad result of extra heating or luminescence caused by relaxation of the thermal electron can be avoided. In addition, the thermal electron transfer rate of the noble metal nanoparticles subjected to the composite treatment is higher than that of the bare noble metal nanoparticles, which shows that the energy level structure of the shell layer is well matched with the thermal electron energy of the noble metal nanoparticles, and the shell layer can generate a photocurrent due to the rapid transfer of thermal electrons. Therefore, the composite nano particle with the core-shell nano heterostructure prepared by the embodiment of the invention can inhibit the surface plasmon resonance of the noble metal nano particle and can generate photocurrent.
TABLE 1 results of the Performance test of the composite nanoparticles prepared in examples 1 to 3 and the noble metal nanoparticles respectively used in examples 1 to 3
In summary, the preparation method comprises the steps of mixing a preparation solution containing catechol H-aggregate and noble metal nanoparticles (noble metal nanoparticles are adsorbed on the surface of the preparation solution) with certain appearance, so that the oxidation reduction reaction of the precursor of the noble metal nanoparticles and the catechol H-aggregate on the surface of the noble metal nanoparticles is realized, the oxidation product of the catechol H-aggregate and the noble metal nanoparticles can be subjected to in-situ coordination, and the composite nanoparticles with a core-shell heterostructure are obtained, wherein the excited dark-state energy level of the shell material (the oxidation product of the catechol H-aggregate) can be strongly coupled with the hot electrons generated by the noble metal nanoparticles, based on the function, the composite nano particles can rapidly lead out hot electrons generated by the surface plasmon resonance effect of the noble metal nano particles, thereby inhibiting the photoelectric thermal effect generated by the collective oscillation of the hot electrons on the surfaces of the noble metal particles.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method for preparing composite nanoparticles, comprising the steps of:
providing a solution containing noble metal nano particles, wherein the surfaces of the noble metal nano particles are adsorbed with precursors of the noble metal nano particles;
adding an alkaline solution into a solution of water-soluble catechol dye molecules to obtain a mixed solution containing catechol H-aggregates;
and mixing the mixed solution with the solution containing the noble metal nano particles to obtain the composite nano particles.
2. The preparation method according to claim 1, wherein the conditions for self-assembling the water-soluble catechol dye molecule are pH 6 to 7.5; and/or
The electrode potential of the precursor of the noble metal nano particles is greater than the standard electrode potential of the water-soluble catechol dye molecules.
3. The method according to claim 1, wherein the water-soluble catechol dye molecule is azurite blue; and/or
The alkaline solution is obtained by dissolving an alkaline compound in distilled water, wherein the alkaline compound is at least one selected from sodium hydroxide, potassium hydroxide, barium hydroxide, calcium hydroxide and ammonia water.
4. The method according to claim 1, wherein the noble metal nanoparticles are selected from one of gold nanoparticles, silver nanoparticles, and platinum nanoparticles; and/or the presence of a gas in the gas,
the precursor of the noble metal nano-particles is selected from one of water-soluble compounds of gold, silver and platinum.
5. The method according to claim 1, wherein the noble metal nanoparticles have a morphology of one of a rod, a sphere, a regular tetrahedron, a regular hexahedron, a regular octahedron, a regular decahedron, and a cuboid.
6. The preparation method according to claim 1, wherein the mass ratio of the water-soluble catechol dye molecules to the noble metal nanoparticles is 1-4: 2-5.
7. The composite nanoparticle is characterized by having a core-shell heterostructure, comprising a core and a shell formed on the surface of the core, wherein the core is made of noble metal nanoparticles, and the shell is made of a benzo ethylene oxide H-aggregate; the shell material is connected to the core material by a coordination bond.
8. The composite nanoparticle of claim 7, wherein the noble metal nanoparticle is selected from one of a gold nanoparticle, a silver nanoparticle, and a platinum nanoparticle; and/or
The noble metal nano particle is in one of rod shape, spherical shape, regular tetrahedron, regular hexahedron, regular octahedron, regular decahedron and cuboid.
9. The composite nanoparticle according to claim 7, wherein the benzo-oxirane H-aggregates are
The H-aggregate of (1).
10. A surface plasmon-driven thermionic solar cell, comprising a surface electrode, a back electrode, and a light absorption layer disposed between the surface electrode and the back electrode, wherein the light absorption layer comprises composite nanoparticles prepared by the method according to any one of claims 1 to 6; and/or the light absorbing layer comprises composite nanoparticles according to any one of claims 7 to 9.
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| CN114460673A (en) * | 2022-01-21 | 2022-05-10 | 中南大学 | High-temperature solar spectrum selective absorber based on plasmon resonance and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056384A (en) * | 2013-01-07 | 2013-04-24 | 济南大学 | Preparation method of precious metal and magnetic nano particles |
| CN109585659A (en) * | 2018-11-02 | 2019-04-05 | 南昌大学 | A kind of bivalve layer plasma nano particle and the application in organic solar batteries |
-
2019
- 2019-12-31 CN CN201911415939.3A patent/CN113130758A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056384A (en) * | 2013-01-07 | 2013-04-24 | 济南大学 | Preparation method of precious metal and magnetic nano particles |
| CN109585659A (en) * | 2018-11-02 | 2019-04-05 | 南昌大学 | A kind of bivalve layer plasma nano particle and the application in organic solar batteries |
Non-Patent Citations (2)
| Title |
|---|
| 曲文刚: "《金属纳米粒子表面等离子体共振效应的调控及相关应用》", 《中国科学技术大学博士学位论文》 * |
| 魏文德: "《有机化工原料大全》", 31 August 1999, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460673A (en) * | 2022-01-21 | 2022-05-10 | 中南大学 | High-temperature solar spectrum selective absorber based on plasmon resonance and preparation method thereof |
| CN114460673B (en) * | 2022-01-21 | 2023-05-26 | 中南大学 | High-temperature solar spectrum selective absorber based on plasmon resonance and preparation method thereof |
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