EP3360628B1 - Procédé de préparation de nanofils d'argent à rapport d'aspect uniforme - Google Patents

Procédé de préparation de nanofils d'argent à rapport d'aspect uniforme Download PDF

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Publication number
EP3360628B1
EP3360628B1 EP16852969.1A EP16852969A EP3360628B1 EP 3360628 B1 EP3360628 B1 EP 3360628B1 EP 16852969 A EP16852969 A EP 16852969A EP 3360628 B1 EP3360628 B1 EP 3360628B1
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EP
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Prior art keywords
solution
silver nanowires
reaction
reaction kettle
aspect ratio
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EP16852969.1A
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German (de)
English (en)
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EP3360628A1 (fr
EP3360628A4 (fr
Inventor
Lu Li
Bitao LIU
Rong Jin
Shanyong CHEN
Hengqing YAN
Youwei GUAN
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Chongqing University of Arts and Sciences
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Chongqing University of Arts and Sciences
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    • 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
    • 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
    • B22F1/0547—Nanofibres or nanotubes
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/25—Noble metals, i.e. Ag Au, Ir, Os, Pd, Pt, Rh, Ru
    • B22F2301/255—Silver or gold
    • 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
    • B22F2304/00—Physical aspects of the powder
    • B22F2304/05—Submicron size particles
    • B22F2304/054—Particle size between 1 and 100 nm

Definitions

  • the present invention relates to a preparation method for silver nanowires, and more particularly, to a preparation method for silver nanowires with a uniform aspect ratio.
  • silver nanowires Based on the properties of high specific surface area, electrical conductivity and thermal conductivity, silver nanowires have a broad application prospect. Especially, the silver nanowires can be used as an alternative material of ITO in fields such as solar energy, OLED, and flexible and large-size touch screen displays, and used in fields such as conductive polymers, composite materials, and electrode printing ink additives. Therefore, the preparation of silver nanowires has become a focus of researchers. At present, there are many documents and patent reports on the preparation methods and applications of silver nanowires.
  • Xia Younan the first one who prepares silver nanowires with a polyol method, proposed the preparation of silver nanowires with a high aspect ratio by using Pt as seeds and reducing silver nitrate by ethylene glycol (Advanced Materials (2002) 14,883).
  • the polyol reduction method was combined with the hydrothermal method, and a small amount of sodium chloride, ferric chloride, copper chloride and other metal halide were introduced to function with Ag ions to form a colloid, which serves as seeds to prepare silver nanowires.
  • the silver nanowires can be quickly prepared by the combination of the polyol method and the microwave method.
  • the silver nanowires thus obtained have a relatively non-uniform aspect ratio, and have a large amount of impurities.
  • Chinese Patent Application No. 200810019828.6 disclosed a batch preparation method for silver nanowires
  • Chinese Patent Application No. 201010559335.9 disclosed a method for preparing silver nanowires with controlled diameter by using a cation-controlled microwave method.
  • he prepared silver nanowires are less than 30 ⁇ m in length, and have a non-uniform aspect ratio.
  • Chinese Patent No. CN 1843670A reported the use of a composite solvent of glycerol and water or ethanol or isopropanol for reduction to prepare silver nanowires.
  • the obtained silver nanowires have a length of 5-200 ⁇ m and a diameter of 70-90 nm.
  • Chinese Patent CN 104785794 A discloses a preparation method for silver nanowires even in length-diameter ratio, comprising the following steps: dissolving silver nitrate in glycerol to get a solution A; dissolving polyvinylpyrrolidone in glycerol to get a solution B; mixing uniformly the solution A and the solution B to form a solution C; and finally, transferring the resulting solution into a reaction kettle for reaction at 150°, and centrifuging the reactants to obtain silver nanowires.
  • the present invention is directed to a preparation method of silver nanowires with a uniform aspect ratio, which is simple, easy to control, and cost-effective.
  • the present invention is achieved through the following technical solution.
  • a preparation method for silver nanowires includes the following steps:
  • reaction time in the reaction kettle is 9-10 hours.
  • step (1) 0.16 g silver nitrate is dissolved at room temperature in 20 ml of glycerol to get the solution A.
  • step (2) 5 g polyvinylpyrrolidone is dissolved at room temperature in 80 ml of glycerol to get the solution B.
  • step (4) 5 ml of the ultrapure water is added into the solution C and mixed uniformly to form the solution D.
  • the centrifuging is performed twice.
  • the preparation method of the present invention is simple to operate, easy to control, cost-effective, and very suitable for large-scale industrial production.
  • the prepared silver nanowires have a uniform aspect ratio, and transparent conductive films based on the silver nanowires have a high transparency of 90-91%.
  • the silver nanowires have a diameter of up to 30-40 nm and a length of 10-20 ⁇ m, and the silver nanowires with the aspect ratio have small resistance, which is beneficial to the improvement of electrical conductivity.
  • the silver nanowires have no particles and feature high purity.
  • 0.16 g silver nitrate was dissolved at room temperature in 20 ml of glycerol to get a solution A; 5 g polyvinylpyrrolidone was dissolved at room temperature in 80 ml of glycerol to get a solution B; the solution A and the solution B were mixed uniformly to form a solution C; then, 5 ml of ultrapure water was added into the solution C and mixed uniformly to form a solution D, finally, the solution D was transferred into a reaction kettle, the reaction kettle was put into an oven with a set temperature of 160°C, and the reaction ended after a certain time of reaction.
  • FIG. 1 is a scanning electron microscope (SEM) diagram of a silver nanowire synthesized in Example 1.
  • the silver nanowires prepared in Example 1 above were formulated into 1g/L silver nanowire slurry, and 500 ⁇ L of slurry was uniformly coated on an A4-size transparent film to prepare a transparent conductive film.
  • the sheet resistance of the transparent conductive film was 42 ohm/sq.
  • the transmittance of the transparent conductive film was measured with a UV-Vis spectrophotometer. As shown in FIG. 2 , at the visible light wavelength of 550 nm, the transmittance of the transparent conductive film was 90.8%.
  • 0.16 g silver nitrate was dissolved at room temperature in 20 ml of glycerol to get a solution A; 5 g polyvinylpyrrolidone was dissolved at room temperature in 80 ml of glycerol to get a solution B; the solution A and the solution B were mixed uniformly to form a solution C; then, 2.5 ml of ultrapure water was added into the solution C and mixed uniformly to form a solution D, finally, the solution D was transferred into a reaction kettle, the reaction kettle was put into an oven with a set temperature of 160°C, and the reaction ended after a certain time of reaction.
  • the Ag nanowire mother solution in the reaction kettle was diluted with alcohol and centrifuged twice to obtain precipitated silver nanowires having a diameter of 30-40 nm and a length of 10-20 ⁇ m, which was dispersed in isopropanol.
  • 0.32 g silver nitrate was dissolved at room temperature in 20 ml of glycerol to get a solution A; 7 g polyvinylpyrrolidone was dissolved at room temperature in 80 ml of glycerol to get a solution B; the solution A and the solution B were mixed uniformly to form a solution C; then, 10 ml of ultrapure water was added into the solution C and mixed uniformly to form a solution D, finally, the solution D was transferred into a reaction kettle, the reaction kettle was put into an oven with a set temperature of 160°C, and the reaction ended after a certain time of reaction.
  • the Ag nanowire mother solution in the reaction kettle was diluted with alcohol and centrifuged twice to obtain precipitated silver nanowires having a diameter of 30-40 nm and a length of 10-20 ⁇ m, which was dispersed in isopropanol.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Non-Insulated Conductors (AREA)
  • Conductive Materials (AREA)

Claims (2)

  1. Procédé de préparation de nanofils d'argent avec un rapport d'aspect uniforme comprenant les étapes suivantes consistant à :
    (1) dissoudre 0,16 g de nitrate d'argent à température ambiante dans 20 mL de glycérol pour obtenir une solution A ;
    (2) dissoudre 5 g de polyvinylpyrrolidone à température ambiante dans 80 mL de glycérol pour obtenir une solution B ;
    (3) mélanger de manière uniforme la solution A et la solution B afin de former une solution C ; et
    (4) ajouter 5 mL d'eau ultra pure dans la solution C et mélanger de manière uniforme afin de former une solution D, finalement, transférer la solution D dans une bouilloire à réaction, mettre la bouilloire à réaction à une température définie de 160 °C, et mettre fin à la réaction après un certain temps de réaction ; diluer une solution mère de nanofils d'argent dans la bouilloire à réaction avec de l'alcool et centrifuger deux fois pour obtenir des nanofils d'argent précipités ayant un diamètre compris entre 30 et 40 nm et une longueur comprise entre 10 et 20 µm, telle que déterminée en utilisant la microscopie électronique à balayage.
  2. Procédé de préparation selon la revendication 1, dans lequel le temps de réaction dans la bouilloire à réaction est compris entre 9 et 10 heures.
EP16852969.1A 2015-10-09 2016-03-14 Procédé de préparation de nanofils d'argent à rapport d'aspect uniforme Not-in-force EP3360628B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510645800.3A CN105081351B (zh) 2015-10-09 2015-10-09 一种均匀的高长径比银纳米线的制备方法
PCT/CN2016/076284 WO2017059658A1 (fr) 2015-10-09 2016-03-14 Procédé de préparation de nanofils d'argent à rapport d'aspect uniforme

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EP3360628A1 EP3360628A1 (fr) 2018-08-15
EP3360628A4 EP3360628A4 (fr) 2019-07-24
EP3360628B1 true EP3360628B1 (fr) 2022-02-09

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US (1) US20190054540A1 (fr)
EP (1) EP3360628B1 (fr)
JP (1) JP6732897B2 (fr)
KR (1) KR102071814B1 (fr)
CN (1) CN105081351B (fr)
WO (1) WO2017059658A1 (fr)

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CN105081351B (zh) * 2015-10-09 2017-09-26 重庆文理学院 一种均匀的高长径比银纳米线的制备方法
EP3360268B1 (fr) 2015-10-09 2020-05-06 Intel IP Corporation Architecture pour accès réseau sans fil
CN105537613B (zh) * 2015-12-25 2017-10-31 蚌埠玻璃工业设计研究院 一种微波辅助水热制备长银纳米线的方法
CN105921766A (zh) * 2016-06-14 2016-09-07 吕振瑞 一种宏量制备单分散银纳米线的方法
CN107645829B (zh) * 2017-10-16 2020-07-10 广东天承科技有限公司 一种电路板导电液及其制备方法和应用
CN108687358B (zh) * 2018-05-24 2021-03-19 首都师范大学 一种制备复合型银纳米线的方法
CN108436105B (zh) * 2018-06-07 2023-06-20 乐凯华光印刷科技有限公司 一种超长纳米银线分散液及其制备方法
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CN114433865A (zh) * 2022-01-27 2022-05-06 昆明贵研新材料科技有限公司 一种高纯度银纳米线的合成方法
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CN115870510A (zh) * 2022-11-29 2023-03-31 德清县浙工大莫干山研究院 一种水分辅助制备超细银纳米线的方法

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CN105081350B (zh) * 2015-10-09 2017-08-29 重庆文理学院 一种新型长径比均匀的有节点银纳米线的制备方法
CN105081348B (zh) * 2015-10-09 2017-08-08 重庆文理学院 一种常压一锅法制备无颗粒高纯度银纳米线的方法
CN105081351B (zh) * 2015-10-09 2017-09-26 重庆文理学院 一种均匀的高长径比银纳米线的制备方法

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KR102071814B1 (ko) 2020-01-30
WO2017059658A1 (fr) 2017-04-13
EP3360628A1 (fr) 2018-08-15
CN105081351B (zh) 2017-09-26
EP3360628A4 (fr) 2019-07-24
US20190054540A1 (en) 2019-02-21
JP2018532048A (ja) 2018-11-01
KR20180049011A (ko) 2018-05-10
CN105081351A (zh) 2015-11-25
JP6732897B2 (ja) 2020-07-29

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