CN112260586A - Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis - Google Patents
Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis Download PDFInfo
- Publication number
- CN112260586A CN112260586A CN202011124210.3A CN202011124210A CN112260586A CN 112260586 A CN112260586 A CN 112260586A CN 202011124210 A CN202011124210 A CN 202011124210A CN 112260586 A CN112260586 A CN 112260586A
- Authority
- CN
- China
- Prior art keywords
- thermoelectric
- sers
- light
- generator
- driven
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N10/00—Electric motors using thermal effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N21/658—Raman scattering enhancement Raman, e.g. surface plasmons
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
Abstract
The invention relates to a light-driven thermoelectric nano-generator, a preparation method thereof and application thereof in SERS in-situ detection catalysis, belonging to the field of three-dimensional Raman enhancement (SERS) substrates.A prepared plasmon structure coupling thermoelectric material combines graphene, silver nanowires and polyvinylidene fluoride, overcomes the defect that other nano-generators are used as SERS substrates, effectively integrates thermoelectric effect and plasmon effect, can obtain higher-strength and more stable SERS signals, and simultaneously proves that the thermal charge density of a plasmon layer is improved under the thermoelectric effect; the thermoelectric nano-generator serving as the SERS substrate is easy to operate, and the catalytic process is stably monitored; the key point is that the catalytic reaction is monitored in situ based on the light-driven thermoelectric nano-generator as the SERS substrate for the first time.
Description
Technical Field
The invention relates to a light-driven thermoelectric nano-generator and a preparation method thereof, in particular to a composite thermoelectric nano-generator based on a plasmon structure coupling thermoelectric material as a surface enhanced Raman substrate and a preparation method thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Nanometer generators have attracted extensive attention as a green energy harvesting and conversion technology for researchers. For both classical piezoelectric and triboelectric nanogenerators, external stresses are applied which cause aligned dipole moments and generate an electric potential, i.e. an internal electric field. Researches show that the electric field can promote the effective separation of photo-generated electrons and hole pairs, improve the thermal charge concentration, and has the capabilities of promoting a photocatalytic reaction and improving the Surface Enhanced Raman Scattering (SERS) intensity. SERS has enabled ultra-sensitive and non-specific detection of biochemical molecular fingerprint information and has wide applications in the fields of biosensing, food safety, environmental monitoring and disease diagnosis.
However, the inventor finds that: the use of mechanical deformation to generate piezoelectric and triboelectric potentials currently results in large vibrations of the sample and often affects laser focusing during in situ SERS detection. Thus, outputting unstable mechanical energy often causes non-uniform electrical signals. All of these methods associated with mechanical deformation have difficulty meeting the practical requirements for uniform and stable SERS signals.
Disclosure of Invention
The invention aims to provide a preparation method of a vibration-free light-driven thermoelectric nano generator. The method is simple to operate and low in cost, can realize batch preparation, and improves the catalytic efficiency by improving the surface charge density of the surface plasmon polariton structure and using the obtained nano generator as an SERS substrate, thereby realizing in-situ detection in the oxygen reduction catalysis process.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided a method for preparing a light-driven thermoelectric nano-generator, comprising:
spinning and coating a silver nanowire solution on the polarized polyvinylidene fluoride film substrate to form a silver nanowire layer;
and transferring the graphene layer on the surface of the silver nanowire layer by a support-layer-free transfer method to obtain the plasmon structure coupled thermoelectric material composite SERS substrate.
The plasmon structure coupled thermoelectric material provided by the invention combines graphene, silver nanowires and polyvinylidene fluoride, and can give full play to the advantages of the graphene, the silver nanowires and the polyvinylidene fluoride: due to the high dielectric constant and low dielectric loss, under illumination, the polyvinylidene fluoride film can convert transient polarization caused by absorbed light and heat into thermoelectric potential energy. The plasmon structures of the graphene and the silver nanowires have a light trapping effect, so that the absorption of light heat can be effectively promoted, the heat is transferred to the polyvinylidene fluoride film, and a thermoelectric effect is caused. The plasmon structure can be used as an electrode and can collect heat charges under the electrostatic induction and the thermoelectric effect. The plasmon structure can further promote the separation of electron and hole pairs to obtain thermal charges through the local surface plasmon effect under the excitation of laser. Thus, the present invention has a number of unique advantages over other configurations.
In a second aspect of the invention, there is provided a light-driven thermoelectric nanogenerator prepared by any of the above-described methods.
The plasmon structure coupled thermoelectric material provided by the invention is used as a SERS substrate, so that the defect that other nano generators are used as the SERS substrate is overcome, the thermoelectric effect and the plasmon effect are effectively combined, a higher-strength and more stable SERS signal can be obtained, and the improvement of the thermal charge density of the plasmon layer under the thermoelectric effect is proved; the thermoelectric nano-generator serving as the SERS substrate is easy to operate, and the catalytic process is stably monitored; the key point is that the catalytic reaction is monitored in situ based on the light-driven thermoelectric nano-generator as the SERS substrate for the first time.
In a third aspect of the invention, the application of the light-driven thermoelectric nano-generator in SERS in-situ detection catalysis is provided.
The light-driven thermoelectric nano generator disclosed by the invention realizes the in-situ monitoring catalytic reaction based on the light-driven thermoelectric nano generator as the SERS substrate for the first time, so that the light-driven thermoelectric nano generator is expected to be widely applied to SERS in-situ detection catalysis.
The invention has the beneficial effects that:
(1) compared with the prior art, the plasmon structure coupling thermoelectric material combines graphene, silver nanowires and polyvinylidene fluoride, and can fully exert the advantages of the graphene, the silver nanowires and the polyvinylidene fluoride: due to the high dielectric constant and low dielectric loss, under illumination, the polyvinylidene fluoride film can convert transient polarization caused by absorbed light and heat into thermoelectric potential energy. The plasmon structures of the graphene and the silver nanowires have a light trapping effect, so that the absorption of light heat can be effectively promoted, the heat is transferred to the polyvinylidene fluoride film, and a thermoelectric effect is caused. The plasmon structure can be used as an electrode and can collect heat charges under the electrostatic induction and the thermoelectric effect. The plasmon structure can further promote the separation of electron and hole pairs to obtain thermal charges through the local surface plasmon effect under the excitation of laser. Thus, there are a number of unique advantages over other configurations.
(2) The plasmon structure coupled thermoelectric material provided by the invention is used as a SERS substrate, so that the defect that other nano generators are used as the SERS substrate is overcome, the thermoelectric effect and the plasmon effect are effectively combined, a higher-strength and more stable SERS signal can be obtained, and the improvement of the thermal charge density of the plasmon layer under the thermoelectric effect is proved; the thermoelectric nano-generator serving as the SERS substrate is easy to operate, and the catalytic process is stably monitored; the key point is that the catalytic reaction is monitored in situ based on the light-driven thermoelectric nano-generator as the SERS substrate for the first time.
(3) The invention has simple structure, convenient operation, strong practicability and easy popularization.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1(a) is a schematic diagram of a plasmon structure coupling thermoelectric material composite light-driven thermoelectric nano-generator serving as a SERS substrate according to the present invention, and fig. 1(b) is a real image of the SERS substrate serving as the plasmon structure coupling thermoelectric material composite light-driven thermoelectric nano-generator prepared in embodiment 1 of the present invention.
Fig. 2(a) is a closed-circuit current of the plasmon structure-coupled thermoelectric material composite type optically-driven thermoelectric nano-generator prepared in example 1 of the present invention, and fig. 2(b) is an open-circuit voltage of the plasmon structure-coupled thermoelectric material composite type optically-driven thermoelectric nano-generator prepared in example 1 of the present invention.
FIG. 3(a) shows that the plasmon structure-coupled thermoelectric material composite type photo-driven thermoelectric nano-generator prepared in example 1 of the present invention is used as a SERS substrate before and after illumination by 10-7SERS spectrum of M rhodamine 6G. FIG. 3(b) is a 10-cycle repetition of a plasmon structure-coupled thermoelectric material composite type photo-driven thermoelectric nano-generator as an SERS substrate before and after illumination prepared in example 1 of the present invention-7609cm of SERS spectrum of M rhodamine 6G-1Relative intensity of the peaks.
Fig. 4 shows an SERS spectrum obtained by using the plasmon structure-coupled thermoelectric material composite light-driven thermoelectric nano-generator prepared in embodiment 1 of the present invention as an SERS substrate before and after illumination to detect catalysis of an oxygen reduction reaction.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
A composite SERS substrate based on a plasmon structure coupling thermoelectric material and a preparation method thereof comprise the following steps: preparing a polyvinylidene fluoride film substrate by using a solution casting process, and obtaining polarization by uniaxial stretching. And spin-coating the silver nanowire solution on the surface of the polyvinylidene fluoride film, and transferring the graphene to the surface of the silver nanowire to obtain the plasmon structure coupled thermoelectric material composite SERS substrate.
In some embodiments, the polyvinylidene fluoride film has a thickness of 10 to 30 μm. Under illumination, the polyvinylidene fluoride film can convert transient polarization caused by absorbed light and heat into thermoelectric potential energy.
In some embodiments, the silver nanowires are a dispersion. The plasmon structures of the graphene and the silver nanowires have a light trapping effect, so that the absorption of light heat can be effectively promoted, the heat is transferred to the polyvinylidene fluoride film, and a thermoelectric effect is caused.
In order to obtain a better catalytic effect, the size specification of the silver nanowire is optimized, in some embodiments, the diameter of the silver nanowire is 30-60nm, the length of the silver nanowire is 80-120 microns, the prepared light-driven thermoelectric nano-generator can obtain a higher-intensity and more stable SERS signal, and meanwhile, the fact that the thermal charge density of a plasmon layer is improved under the thermoelectric effect is proved.
In some embodiments, the graphene transfer process is a support-layer-free transfer method. The plasmon structure coupled thermoelectric material provided by the invention combines the graphene, the silver nanowire and the polyvinylidene fluoride, and can give full play to the advantages of the graphene, the silver nanowire and the polyvinylidene fluoride.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1
A plasmon structure coupled thermoelectric material composite type optical drive thermoelectric nano-generator is used as an SERS substrate and a preparation method thereof, and comprises the following preparation steps:
1. preparing a polyvinylidene fluoride film substrate by using a solution casting process; firstly, preparing a PVDF solution, weighing 2.5g of PVDF powder, adding 10mL of Dimethylformamide (DMF) solution, heating to 80 ℃ under magnetic stirring, and maintaining for 30min to completely dissolve the PVDF powder to prepare a mixed solution of PVDF and DMF. The prepared mixed solution was drop-cast on a glass mold and placed in an oven at 60 ℃ for 6 hours and then at 120 ℃ for 1 hour to obtain a PVDF film.
Cutting the prepared PVDF film into 2cm multiplied by 10cm, clamping two ends of the film by a clamp, stretching the film in one direction by a stretcher, controlling the temperature of the film at 90 ℃ in the stretching process, wherein the stretching speed is 0.03cm per second, and keeping the temperature for 20 min.
2. Spin-coating a silver nanowire dispersion (with the concentration of 10mg/ml) with the diameter of 60nm and the length of 120 mu m onto the surface of a polyvinylidene fluoride film substrate, and naturally drying;
and (3) putting the polarized PVDF film into a spin coater, sucking the silver nanowire solution by a liquid transfer gun and dropping the silver nanowire solution on the surface of the PVDF film, setting the rotating speed of the spin coater at 500rpm, and keeping the speed for 10 s.
3. Transferring the graphene film to the surface of a silver nanowire/polyvinylidene fluoride film substrate, and naturally airing; shearing the prepared graphene/copper foil sample into 2cm multiplied by 2cm small pieces, clamping one corner of each small piece by using a forceps, and then sucking FeCl by using a liquid-transfering gun3Washing one surface of the small piece with solution (1M), washing for 3min to wash away graphene on the surface, and slowly placing the washed graphene/copper foil small piece on FeCl3The solution was allowed to float on the surface with the unwashed side facing up and the rinsed side still in contact with FeCl3Solution to completely etch the Cu foil. Thereafter, the graphene layer was carefully transferred into deionized water and rinsed 3 times with deionized water to remove the remaining etching solution. Next, the graphene layer in deionized water was gently scooped out with an AgNWs/PVDF sample, allowed to adhere smoothly to the silver film surface, and dried at room temperature.
4. Respectively depositing a square gold electrode and a gold film electrode on the surface of the graphene and the bottom surface of the polyvinylidene fluoride;
5. and connecting the gold electrode with an external lead by using conductive silver adhesive to obtain the plasmon structure coupled thermoelectric material composite light-driven thermoelectric nano-generator.
Fig. 1 is a schematic diagram and a real image of a plasmon structure-coupled thermoelectric material composite type optically-driven thermoelectric nano-generator prepared in embodiment 1 of the present invention as a SERS substrate.
Example 2
A plasmon structure coupled thermoelectric material composite type optical drive thermoelectric nano-generator is used as an SERS substrate and a preparation method thereof, and comprises the following preparation steps:
6. irradiating the surface of the thermoelectric nano-generator by using a 0.75W simulated fluorescent lamp;
7. add 5. mu.l 10-7Dripping the M rhodamine 6G solution on the surface of the SERS substrate, and respectively detecting SERS spectra before and after illumination;
8. adding 0.1M HClO4Dropping the solution on the surface of the SERS substrate, and respectively detecting SERS spectra before and after illumination;
fig. 2 shows the closed-circuit current and the open-circuit voltage of the plasmon structure coupled thermoelectric material composite light-driven thermoelectric nano-generator prepared in embodiment 2 of the present invention, and it can be seen from fig. 2 that: the thermoelectric nano-generator prepared by the method obtains a stable current signal, and after the thermoelectric nano-generator is charged for 20s, the potential drops to zero after 100s, so that the charge density of the plasmon layer is improved, and time is provided for Raman detection.
Fig. 3 shows a raman enhancement spectrum of rhodamine 6G detected by using a plasmon structure coupled thermoelectric material composite light-driven thermoelectric nano-generator prepared in the invention as a SERS substrate, and it can be seen from fig. 3 that: after illumination, the relative intensity of the fingerprint characteristic peak of rhodamine 6G is enhanced, and after repeating the process for a plurality of times, the phenomenon is observed, the local thermal charge density is improved mainly due to the thermoelectric effect, and the electric field is enhanced.
Fig. 4 shows a raman enhancement spectrum of the present invention, which is used for monitoring an oxygen reduction reaction in real time by using a plasmon structure coupled thermoelectric material composite type optical driven thermoelectric nano-generator as an SERS substrate, and it can be seen from fig. 4 that: characteristic peak 729cm of OOH, intermediate product of redox reaction, after illumination-1It was detected that the efficiency of the catalytic reaction was improved, mainly due to the thermoelectric effect increasing the local thermal charge density.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the specific embodiments, it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A preparation method of a light-driven thermoelectric nano-generator is characterized by comprising the following steps:
spinning and coating a silver nanowire solution on the polarized polyvinylidene fluoride film substrate to form a silver nanowire layer;
and transferring the graphene layer on the surface of the silver nanowire layer by a support-layer-free transfer method to obtain the plasmon structure coupled thermoelectric material composite SERS substrate.
2. The method of claim 1, wherein the polyvinylidene fluoride film has a thickness of 10-30 μm.
3. The method of manufacturing a light-driven thermoelectric nanogenerator according to claim 2, wherein the method of manufacturing the polarized polyvinylidene fluoride film substrate comprises: preparing a polyvinylidene fluoride film substrate by using a solution casting process, and obtaining polarization by uniaxial stretching.
4. The method of manufacturing a light-driven thermoelectric nanogenerator according to claim 3, wherein the specific process conditions of the solution casting are as follows: uniformly mixing the PVDF solution and the DMF solution, dripping the mixture on a mould, drying the mixture for 5 to 6 hours at the temperature of between 60 and 80 ℃, and then placing the mixture for 1 to 2 hours at the temperature of between 105 and 120 ℃ to obtain the PVDF film.
5. The method of manufacturing a light-driven thermoelectric nanogenerator according to claim 3, wherein the specific process conditions of the uniaxial stretching are as follows: clamping two ends of the film, stretching in one direction, controlling the temperature of the film in the stretching process at 90-100 ℃, keeping the stretching speed at 0.03-0.05 cm per second for 20-30 min.
6. The method for preparing an optically driven thermoelectric nanogenerator according to claim 1, wherein the specific process conditions of the spin coating are as follows: putting the PVDF film into a spin coater, using a liquid transfer gun to absorb the silver nanowire solution to be dripped on the surface of the PVDF, setting the rotation speed of the spin coater at 500-600 rpm, and keeping the rotation speed for 10-15 s.
7. The method of claim 1, wherein the silver nanowires have a diameter of 30-60nm and a length of 80-120 μm.
8. The method for preparing an optically-driven thermoelectric nanogenerator according to claim 1, wherein the specific process conditions of the support-layer-free transfer method are as follows: cutting a graphene/copper foil sample into small pieces, washing off graphene on one surface of each small piece, then placing the rest of the graphene/copper foil small pieces on the surface of an etching solution to enable the graphene/copper foil small pieces to float, enabling the side which is not washed to face upwards, enabling the washed side to be still in contact with the etching solution, after the Cu foil is completely etched, carefully transferring the graphene layer into deionized water, and washing for 3 times to remove the residual etching solution; next, the graphene layer in deionized water was gently scooped out with an AgNWs/PVDF sample, allowed to adhere smoothly to the surface of the silver film, and dried at room temperature.
9. A light driven thermoelectric nanogenerator prepared by the method of any one of claims 1 to 8.
10. Use of the light-driven thermoelectric nanogenerator of claim 9 in SERS in-situ detection catalysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124210.3A CN112260586B (en) | 2020-10-20 | 2020-10-20 | Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124210.3A CN112260586B (en) | 2020-10-20 | 2020-10-20 | Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112260586A true CN112260586A (en) | 2021-01-22 |
| CN112260586B CN112260586B (en) | 2022-03-11 |
Family
ID=74245044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011124210.3A Active CN112260586B (en) | 2020-10-20 | 2020-10-20 | Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112260586B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616769A (en) * | 2012-03-19 | 2012-08-01 | 浙江大学 | Direct graphene film transfer method |
| CN104448360A (en) * | 2013-09-22 | 2015-03-25 | 福建省辉锐材料科技有限公司 | Production method of piezoelectric polyvinylidene fluoride film |
| CN104528709A (en) * | 2015-01-23 | 2015-04-22 | 华南理工大学 | Preparation method of graphene having high Raman scattering intensity |
| CN110146481A (en) * | 2019-05-07 | 2019-08-20 | 山东师范大学 | A kind of silver nano flower-like composite graphite alkene SERS substrate and its preparation method and application |
| CN110412007A (en) * | 2019-07-19 | 2019-11-05 | 山东师范大学 | A kind of Raman spectrum base, preparation method and application |
| US10526441B1 (en) * | 2019-01-23 | 2020-01-07 | King Fahd University Of Petroleum And Minerals | Polypyrrole-coated silver particles for surface enhanced Raman scattering |
-
2020
- 2020-10-20 CN CN202011124210.3A patent/CN112260586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616769A (en) * | 2012-03-19 | 2012-08-01 | 浙江大学 | Direct graphene film transfer method |
| CN104448360A (en) * | 2013-09-22 | 2015-03-25 | 福建省辉锐材料科技有限公司 | Production method of piezoelectric polyvinylidene fluoride film |
| CN104528709A (en) * | 2015-01-23 | 2015-04-22 | 华南理工大学 | Preparation method of graphene having high Raman scattering intensity |
| US10526441B1 (en) * | 2019-01-23 | 2020-01-07 | King Fahd University Of Petroleum And Minerals | Polypyrrole-coated silver particles for surface enhanced Raman scattering |
| CN110146481A (en) * | 2019-05-07 | 2019-08-20 | 山东师范大学 | A kind of silver nano flower-like composite graphite alkene SERS substrate and its preparation method and application |
| CN110412007A (en) * | 2019-07-19 | 2019-11-05 | 山东师范大学 | A kind of Raman spectrum base, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112260586B (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Enachi et al. | Light‐Induced Motion of Microengines Based on Microarrays of TiO2 Nanotubes | |
| CN102790166B (en) | Nanofiber based flexible high performance thermoelectric material and preparation method thereof | |
| CN1838456A (en) | Direct spraying method for preparing fuel cell membrane electrode | |
| CN108258290B (en) | Method for preparing high-temperature proton exchange membrane with layer-by-layer assembly structure based on spin coating technology by doping phosphoric acid | |
| CN110492789B (en) | Water evaporation power generation device based on aluminum oxide nano coating and preparation method thereof | |
| CN113066673B (en) | Ti3C2Tx-TiO2 nanotube array self-supporting film electrode material and preparation method and application thereof | |
| CN107393724B (en) | A kind of micro super capacitor production method based on graphene/carbon nano-tube aeroge | |
| CN107481801B (en) | A kind of preparation method of silver nanowires grid transparent electrode | |
| CN110138257B (en) | Friction nanometer generator, preparation method thereof and wearable device | |
| US20110100440A1 (en) | Optical Rectification Device and Method of Making Same | |
| Mosconi et al. | Site-selective integration of MoS2 flakes on nanopores by means of electrophoretic deposition | |
| CN101935452B (en) | Preparation method of sulfonated carbon nano tube (CNT) loaded polyaniline nanorod super capacitor electrode material | |
| CN108233761A (en) | Friction nanometer power generator containing electron-accepting layer and preparation method thereof | |
| CN106932372B (en) | The detection architecture combined based on optical tweezer with surface-enhanced fluorescence technology | |
| Xie et al. | A fluorescent triboelectric nanogenerator manufactured with a flexible janus nanobelt array concurrently acting as a charge-generating layer and charge-trapping layer | |
| O’Riordan et al. | Dielectrophoretic self-assembly of polarized light emitting poly (9, 9-dioctylfluorene) nanofibre arrays | |
| CN112260586B (en) | Light-driven thermoelectric nano-generator, preparation thereof and application thereof in SERS (surface enhanced Raman scattering) in-situ detection catalysis | |
| US8137521B2 (en) | Carbon nanotube sheet | |
| Teng et al. | High-density silicon nanowires prepared via a two-step template method | |
| JP4876288B2 (en) | Expanded carbon fiber, method for producing the same, and solar cell | |
| CN111155324B (en) | Evaporation induction oriented self-assembly efficient conductive fabric coating and preparation method thereof | |
| CN109626316B (en) | Three-dimensional structure graphene nano power generation device and preparation method thereof | |
| CN114523733A (en) | Electrochemical driving type color-changing deformation dual-response actuator and preparation method thereof | |
| CN113686834B (en) | Preparation method of SERS substrate integrating pyroelectric effect and plasmon resonance effect | |
| CN102393450B (en) | Magnetic tweezers probe based on optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |