CN109967760B - Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof - Google Patents

Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof Download PDF

Info

Publication number
CN109967760B
CN109967760B CN201910307148.2A CN201910307148A CN109967760B CN 109967760 B CN109967760 B CN 109967760B CN 201910307148 A CN201910307148 A CN 201910307148A CN 109967760 B CN109967760 B CN 109967760B
Authority
CN
China
Prior art keywords
dendritic silver
nanosheet material
dendritic
nanosheet
serrated
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.)
Active
Application number
CN201910307148.2A
Other languages
Chinese (zh)
Other versions
CN109967760A (en
Inventor
杨子岳
姜涛
何子健
詹鹏锦
王福艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongying Ruigang Investment Service Co ltd
Original Assignee
Ningbo University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo University filed Critical Ningbo University
Priority to CN201910307148.2A priority Critical patent/CN109967760B/en
Publication of CN109967760A publication Critical patent/CN109967760A/en
Application granted granted Critical
Publication of CN109967760B publication Critical patent/CN109967760B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B22F1/0551—Flake form nanoparticles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B22F1/0553—Complex form nanoparticles, e.g. prism, pyramid, octahedron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/068—Flake-like particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/07—Metallic powder characterised by particles having a nanoscale microstructure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses a dendritic silver nanosheet material with a serrated inner surface, a preparation method and an application thereof, and is characterized in that the nanosheet material is of a hollow structure, the longest side of the nanosheet material from the center to the end point is 432-555 nm, the inner side of the nanosheet material is of an irregular serrated shape, and the outer side of the nanosheet material is provided with a plurality of longer nanogaps, wherein the preparation method comprises the following steps: 1) mixing and stirring sodium citrate and ascorbic acid in deionized water uniformly, then dripping a silver nitrate water solution, centrifuging, and collecting precipitate to obtain dendritic silver nanosheets; 2) the dendritic silver nanosheet is dissolved in water, the chloroauric acid aqueous solution is rapidly added while being vigorously stirred at room temperature, and the dendritic silver nanosheet material containing the serrated inner surface is obtained by collecting precipitates after centrifugation.

Description

Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof
Technical Field
The invention relates to a silver nanosheet material, in particular to a dendritic silver nanosheet material containing a serrated inner surface, and a preparation method and application thereof.
Background
It is well known that the optical properties of noble metal nanomaterials can be tuned by adjusting their structural parameters. These structural parameters include their size, morphology and composition. Therefore, the efficient controllable synthesis of the noble metal nano material becomes a research hotspot in the field of functional materials. The main reason is that the novel optical functional materials have wide and good application prospects in many fields of catalysis, biosensors, photoelectrons, environmental monitoring, immunoassay and the like. In particular, it is extremely important to realize its excellent surface enhanced raman scattering properties by designing and preparing an anisotropic noble metal nanostructure having a large number of tip dendritic structures to obtain a local electromagnetic field with higher magnification.
The surface enhanced Raman scattering technology is an ultra-sensitive analysis technology with single molecule detection capability, and a delicate Raman signal is obviously enhanced through a local electromagnetic field on the surface of a noble metal nano material. In general, the repeatability and strength of the surface enhanced raman scattering properties of noble metal nanomaterials are closely related to the geometric parameters of the nanomatrix material. Among various nano structures, the nano sheet is a better surface enhanced Raman scattering substrate material. The nano sheet has a smooth surface, and Raman signals output by Raman molecules adsorbed on the nano sheet have small fluctuation and high reproducibility. Furthermore, in order to obtain a strong electromagnetic coupling between the nanostructures, a large number of electromagnetic hot spots are obtained. Sharp edges and dendritic structures have been introduced into the nanoplatelets to form planar dendritic nanostructures. However, the tips with the smaller radius of curvature are typically only located around the edges of the nanoplatelets, which constitute only a smaller portion of the nanoplatelets than smooth surfaces with a larger area, resulting in a limited number of electromagnetic hot spots. Therefore, there is a need to further improve such dendritic nanosheet structure to obtain a highly efficient surface enhanced raman substrate with superior electromagnetic properties.
Disclosure of Invention
The invention aims to provide a dendritic silver nanosheet material with a saw-toothed inner surface and extremely high-intensity SERS signal output, and a preparation method and application thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the dendritic silver nanosheet material comprises a serrated inner surface, the nanosheet material is of a hollow structure, the longest side of the nanosheet material from the center to the end point is 432-555 nanometers, the inner side of the nanosheet material is irregularly serrated, and the outer side of the nanosheet material is provided with a plurality of long nanogaps.
The preparation method of the dendritic silver nanosheet material with the serrated inner surface comprises the following steps:
1) preparing dendritic silver nanosheets: mixing and stirring sodium citrate and ascorbic acid in deionized water uniformly, controlling the temperature of a reaction solution to be 45 ℃, dripping a silver nitrate water solution into the reaction solution, centrifuging and collecting precipitates to obtain dendritic silver nanosheets;
2) preparation of dendritic silver nanoplatelets containing a serrated inner surface: dissolving the dendritic silver nanosheets prepared in the step 1) in water, rapidly adding a chloroauric acid aqueous solution at room temperature while stirring vigorously, centrifuging, and collecting precipitates to obtain the dendritic silver nanosheets material containing the serrated inner surface.
The step 1) is specifically as follows: and (2) mixing 3-12 mg of sodium citrate and 2-8 mg of ascorbic acid in 5-20 ml of deionized water, uniformly stirring, controlling the temperature of the reaction liquid to be 45 ℃, dripping 1-4 ml of silver nitrate aqueous solution with the concentration of 4 mg per ml into the reaction liquid for 4-6 minutes, centrifuging, and collecting precipitates to obtain the dendritic silver nanosheets.
The step 2) is specifically as follows: dissolving the dendritic silver nanosheet prepared in the step 1) in 2 ml of water, rapidly adding 40-60 microliters of chloroauric acid aqueous solution with the concentration of 0.05 millimole per ml while vigorously stirring at room temperature, centrifuging, and collecting precipitate to obtain the dendritic silver nanosheet material containing the serrated inner surface.
The centrifugation speed in the steps 1) -2) is 5000-.
The application of the dendritic silver nanosheet material containing the serrated inner surface in enhancing SERS signal output is provided.
Compared with the prior art, the invention has the advantages that: the invention discloses a dendritic silver nanosheet material with a serrated inner surface, wherein the nanosheet material is of a hollow structure, the side length is 432-555 nanometers, the inner side edge is of an irregular serrated shape, and the outer side of the nano material is of a dendritic nano structure. The serrated inner surface and the dendritic outer surface of the structure are both provided with a large number of protrusions and tip structures, and under the excitation of external laser, a large number of surface local electromagnetic field hot spots can be formed around the inner surface and the outer surface, so that the SERS signal is obviously enhanced, and the ultra-sensitive detection of trace molecules is favorably realized.
Drawings
FIG. 1 is a scanning electron microscope photomicrograph of a dendritic silver nanoplatelet material having a serrated inner surface prepared in example 1 of the present invention;
fig. 2 is a raman detection result using the dendritic silver nanoplatelets having serrated inner surfaces prepared in example 1 of the present invention;
FIG. 3 is a scanning electron microscope photomicrograph of a dendritic silver nanoplatelet material having a serrated inner surface prepared in example 2 of the present invention;
fig. 4 is a raman detection result using the dendritic silver nanoplatelets having serrated inner surfaces prepared in example 2 of the present invention;
FIG. 5 is a scanning electron microscope photomicrograph of a dendritic silver nanoplatelet material having a serrated inner surface prepared in example 3 of the present invention;
fig. 6 shows raman detection results of the dendritic silver nanoplatelets having serrated inner surfaces prepared in example 3 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the raw materials used are commercially available products. The raman spectroscopic detector inVia reflex used in the examples was purchased from renisha, england.
Example 1
The preparation method of the dendritic silver nanosheet material with the serrated inner surface comprises the following steps:
1. preparing dendritic silver nanosheets: mixing 3 mg of sodium citrate and 2 mg of ascorbic acid in 5 ml of deionized water, uniformly stirring, controlling the temperature of a reaction solution to be 45 ℃, dripping 1 ml of silver nitrate aqueous solution (the concentration is 4 mg per ml) into the reaction solution for 4-6 minutes, centrifuging, and collecting precipitates to obtain dendritic silver nanosheets;
2. preparation of dendritic silver nanoplatelets containing a serrated inner surface: and (2) dissolving the dendritic silver nanosheet prepared in the step 1) in 2 ml of water, rapidly adding 40 microliters of chloroauric acid aqueous solution (the concentration is 0.05 millimole per ml) at room temperature under vigorous stirring, centrifuging, and collecting precipitate to obtain the dendritic silver nanosheet material containing the serrated inner surface.
Fig. 1 shows a scanning electron microscope photograph of the dendritic silver nanoplatelet material having a serrated inner surface prepared in this example. As can be seen from fig. 1, the dendritic silver nanosheet material having a serrated inner surface prepared in this example has a hollow structure, a longest side from the center to the end point is 438 nm, the inner surface is irregularly serrated, and the outer side is a dendritic nanostructure.
Fig. 2 is a raman spectrum of a detection molecule 4-mercaptophenylacetic acid of a dendritic silver nanosheet material containing a serrated inner surface prepared by the method. As can be seen from FIG. 2, the surface enhanced Raman scattering spectrum output by the nanosheet material has higher signal intensity, which is 1076 cm-1The raman signal intensity reached 2644.
Example 2
The preparation method of the dendritic silver nanosheet material with the serrated inner surface comprises the following steps:
1. preparing dendritic silver nanosheets: mixing 6 mg of sodium citrate and 4 mg of ascorbic acid in 10 ml of deionized water, uniformly stirring, controlling the temperature of a reaction solution to be 45 ℃, dripping 2 ml of silver nitrate aqueous solution (the concentration is 4 mg per ml) into the reaction solution for 4-6 minutes, centrifuging, and collecting precipitates to obtain dendritic silver nanosheets;
2. preparation of dendritic silver nanoplatelets containing a serrated inner surface: dissolving the dendritic silver nanosheet prepared in the step 1) in 2 ml of water, rapidly adding 50 microliters of chloroauric acid aqueous solution (the concentration is 0.05 millimole per ml) at room temperature under vigorous stirring, centrifuging, and collecting precipitate to obtain the dendritic silver nanosheet material containing the serrated inner surface.
Fig. 3 shows a scanning electron microscope photograph of the dendritic silver nanoplatelets having serrated inner surfaces prepared in this example. As can be seen from fig. 3, the dendritic silver nanosheet material having a serrated inner surface prepared in this example has a hollow structure, the longest side from the center to the end point is 555 nm, the inner surface is irregularly serrated, and the outer side is a dendritic nanostructure.
Fig. 4 is a raman spectrum of detecting molecular mercaptophenylacetic acid by using the dendritic silver nanosheet material with a serrated inner surface prepared by the method. As can be seen from FIG. 4, the surface enhanced Raman scattering spectrum output by the nanosheet material has higher signal intensity, which is 1076 cm-1The raman signal intensity reached 4642.
Example 3
The preparation method of the dendritic silver nanosheet material with the serrated inner surface comprises the following steps:
1. preparing dendritic silver nanosheets: mixing and stirring 12 mg of sodium citrate and 8 mg of ascorbic acid in 20 ml of deionized water uniformly, controlling the temperature of a reaction solution to be 45 ℃, dripping 4 ml of silver nitrate aqueous solution (the concentration is 4 mg per ml) into the reaction solution for 4-6 minutes, centrifuging, and collecting precipitates to obtain dendritic silver nanosheets;
2. preparation of dendritic silver nanoplatelets containing a serrated inner surface: and (2) dissolving the dendritic silver nanosheet prepared in the step 1) in 2 ml of water, rapidly adding 60 microliters of chloroauric acid aqueous solution (the concentration is 0.05 millimole per ml) at room temperature under vigorous stirring, centrifuging, and collecting precipitate to obtain the dendritic silver nanosheet material containing the serrated inner surface.
Fig. 5 shows a scanning electron microscope photograph of the dendritic silver nanoplatelets having serrated inner surfaces prepared in this example. As can be seen from fig. 5, the dendritic silver nanosheet material having a serrated inner surface prepared in this example has a hollow structure, the longest side from the center to the end point is 432 nm, the inner surface is irregularly serrated, and the outer side is a dendritic nanostructure.
Fig. 6 is a raman spectrum of a molecule mercaptophenylacetic acid detected by the dendritic silver nanosheet material having a serrated inner surface prepared by the above method. As can be seen from FIG. 6, the surface enhanced Raman scattering spectrum output by the nanosheet material has higher signal intensity, which is 1076 cm-1The intensity of the Raman signal reaches 6580.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (2)

1. A preparation method of a dendritic silver nanosheet material with a serrated inner surface is characterized in that the nanosheet material is of a hollow structure, the longest side of the nanosheet material from the center to the end point is 432-555 nanometers, the inner side edge of the nanosheet material is irregularly serrated, and the outer side edge of the nanosheet material is provided with a plurality of longer nanometer gaps, and the preparation method comprises the following steps:
1) preparing dendritic silver nanosheets: mixing and stirring sodium citrate and ascorbic acid in deionized water uniformly, controlling the temperature of a reaction solution to be 45 ℃, dripping a silver nitrate water solution into the reaction solution, centrifuging and collecting precipitate to obtain dendritic silver nanosheets, wherein the method specifically comprises the following steps: mixing 3-12 mg of sodium citrate and 2-8 mg of ascorbic acid in 5-20 ml of deionized water, uniformly stirring, controlling the temperature of a reaction solution to be 45 ℃, dripping 1-4 ml of silver nitrate water solution with the concentration of 4 mg per ml into the reaction solution for 4-6 minutes, centrifuging, and collecting precipitates to obtain dendritic silver nanosheets;
2) preparation of dendritic silver nanoplatelets containing a serrated inner surface: dissolving the dendritic silver nanosheet prepared in the step 1) in water, rapidly adding a chloroauric acid aqueous solution while vigorously stirring at room temperature, centrifuging, and collecting precipitates to obtain a dendritic silver nanosheet material containing a serrated inner surface, wherein the method specifically comprises the following steps: and (3) dissolving the dendritic silver nanosheets in 2 ml of water, rapidly adding 40-60 microliters of chloroauric acid aqueous solution with the concentration of 0.05 millimole per ml while vigorously stirring at room temperature, centrifuging, and collecting precipitates to obtain the dendritic silver nanosheets material containing the serrated inner surface.
2. The method of preparing a dendritic silver nanoplatelet material having a serrated inner surface as claimed in claim 1, wherein: the centrifugation speed in the steps 1) -2) is 5000-.
CN201910307148.2A 2019-04-17 2019-04-17 Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof Active CN109967760B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910307148.2A CN109967760B (en) 2019-04-17 2019-04-17 Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910307148.2A CN109967760B (en) 2019-04-17 2019-04-17 Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN109967760A CN109967760A (en) 2019-07-05
CN109967760B true CN109967760B (en) 2021-11-30

Family

ID=67084951

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910307148.2A Active CN109967760B (en) 2019-04-17 2019-04-17 Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN109967760B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114433867B (en) * 2022-02-08 2023-05-23 河南科技大学 Dendritic symmetrical octagonal Ag nano structure and preparation method and application thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008121051A (en) * 2006-11-10 2008-05-29 Mitsui Mining & Smelting Co Ltd Method for producing silver powder
JP2013144829A (en) * 2012-01-13 2013-07-25 Sumitomo Electric Ind Ltd Dendritic metal powder, and conductive paste, electromagnetic wave shielding material and heat dissipating material containing dendritic metal powder, as well as method for manufacturing dendritic metal powder
CN104985178B (en) * 2015-07-06 2017-05-03 宁波大学 Preparation method of silver core-gold shell hexagonal nanometer ring
CN105014094B (en) * 2015-07-17 2017-04-26 西安交通大学 Core-shell-structure silver-gold nanosheet based on epitaxial growth and preparation method and application thereof
US10147512B2 (en) * 2015-12-09 2018-12-04 C3Nano Inc. Methods for synthesizing silver nanoplates and noble metal coated silver nanoplates and their use in transparent films for control of light hue
CN105710385B (en) * 2016-01-27 2017-11-21 南通大学 A kind of preparation method of Porous hollow gold and silver Nanoalloy particle
CN106735300B (en) * 2016-12-22 2018-09-21 东南大学 A kind of synthetic method of ultra-thin silver nanoparticle plate
CN108326281B (en) * 2017-05-17 2019-11-12 宁波大学 A kind of dendritic silver nanoparticle wince and its preparation method and application
CN107418124B (en) * 2017-05-17 2019-10-25 宁波大学 A kind of dendritic nucleocapsid Silver nanodisks material and its preparation method and application
CN107414069B (en) * 2017-08-07 2019-03-12 国家纳米科学中心 Silver nanoparticle disk, preparation method and Gin Nanometer globoid and assembly using its preparation
CN107983951B (en) * 2018-01-08 2021-01-29 合肥学院 Preparation method of raspberry-shaped gold nanoparticles
CN108580919B (en) * 2018-03-08 2021-10-15 温州大学 Preparation method of silver-core mesoporous gold nanostructure material, surface-enhanced Raman detection probe and application thereof

Also Published As

Publication number Publication date
CN109967760A (en) 2019-07-05

Similar Documents

Publication Publication Date Title
Hu et al. Characterization and analytical separation of fluorescent carbon nanodots
Zhang et al. Preparation of high-quality biocompatible carbon dots by extraction, with new thoughts on the luminescence mechanisms
Xu et al. Low-cost synthesis of carbon nanodots from natural products used as a fluorescent probe for the detection of ferrum (III) ions in lake water
Qi et al. Electrochemical methods to study photoluminescent carbon nanodots: preparation, photoluminescence mechanism and sensing
Xiao et al. Fluorescent carbon dots: facile synthesis at room temperature and its application for Fe 2+ sensing
KR101986531B1 (en) Anisotropic Nanostructures with Bimetallic Nanocluster and Conducting Polymer Compartment for Photonics-based Biosensing, process for producing the same, and use thereof
EP2584345A1 (en) Metal particles for surface-enhanced raman scattering and molecular sensing
Zhang et al. Fluorescence resonance energy transfer between NaYF4: Yb, Tm upconversion nanoparticles and gold nanorods: Near-infrared responsive biosensor for streptavidin
Yang et al. Gold nanoring core-shell satellites with abundant built-in hotspots and great analyte penetration: An immunoassay platform for the SERS/fluorescence-based detection of carcinoembryonic antigen
Roy et al. Shape effect on the fabrication of imprinted nanoparticles: Comparison between spherical-, rod-, hexagonal-, and flower-shaped nanoparticles
CN109030455A (en) A kind of preparation and detection method of the surface Raman enhancement substrate based on microplate
Su et al. MoO3 nanosheet-assisted photochemical reduction synthesis of Au nanoparticles for surface-enhanced Raman scattering substrates
Xu et al. Fluorescent detection of emerging virus based on nanoparticles: From synthesis to application
CN109967760B (en) Dendritic silver nanosheet material containing serrated inner surface and preparation method and application thereof
CN113770372A (en) Preparation method of gold nanoparticle aggregate material
CN111793855A (en) Precious metal nanoparticle composite SERS fiber and preparation method and application thereof
CN108568519B (en) Preparation method and application of silver nano composite material
CN104625044A (en) Ferroferric oxide/silver composite material and manufacturing method and application of ferroferric oxide/silver composite material
CN108580919B (en) Preparation method of silver-core mesoporous gold nanostructure material, surface-enhanced Raman detection probe and application thereof
Tong et al. Solvent-mediated in situ growth and assembly of gold nanoparticles@ carbon dots for rapid colorimetric nonenzymatic alcohol sensing
CN108152266B (en) Core-shell material based on polydopamine, and preparation method and application thereof
Liu et al. Quantitative monitoring of SARS-CoV-2 mediated by the intrinsic Raman signal of silicon nanoparticles and SiC@ RP composite semiconductor SERS substrate
Luo et al. A facile one step solvothermal controllable synthesis of FeS2 quantum dots with multiple color emission for the visual detection of aconitine
CN103399003B (en) Preparation method at the bottom of a kind of SERS nano silver-group
CN110987896B (en) Trace amoxicillin detection method taking Ag @ Au as SERS substrate

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
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220728

Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province

Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd.

Address before: 315211, Fenghua Road, Jiangbei District, Zhejiang, Ningbo 818

Patentee before: Ningbo University

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20221104

Address after: No. 99, Gangcheng Road, Dongying Port Economic Development Zone, Dongying City, Shandong Province 257237

Patentee after: Dongying Ruigang Investment Service Co.,Ltd.

Address before: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province

Patentee before: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd.