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Recovery method and application of metal nanomaterial dispersed with assistance of polyvinylpyrrolidone

A polyvinylpyrrolidone, metal nanotechnology, applied in conductive materials dispersed in non-conductive inorganic materials, nanotechnology and other directions, can solve the problems of low efficiency, high cost, waste of space, etc., and achieve high efficiency, rapid separation and recovery. simple method effect

Pending Publication Date: 2022-07-15
NUOVO FILM SUZHOU CHINA INC
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  • Description
  • Claims
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Problems solved by technology

[0003] Currently the most conventional recycling scheme 1. Natural settlement, which takes a long time and wastes space
2. The centrifuge centrifuges to make the silver wire settle quickly, which requires centrifugal equipment, which has low efficiency and high cost

Method used

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  • Recovery method and application of metal nanomaterial dispersed with assistance of polyvinylpyrrolidone
  • Recovery method and application of metal nanomaterial dispersed with assistance of polyvinylpyrrolidone

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings. Figure 1-Figure 2 shown, is the preferred embodiment of the present invention.

[0023] The inventor found in the research that polyvinylpyrrolidone (PVP) is used in the synthesis and dispersion of many metal nanomaterials to prevent the agglomeration of metal nanomaterials; therefore, there is also a certain amount of PVP in the waste liquid of metal nanomaterials dispersed by PVP. . For example, silver nanomaterials; taking silver nanowires as an example, PVP is often added to the synthesis route. Basically, the surface of all nanosilver wires is coated with a layer of PVP of several nanometers; in addition, there will be a certain amount of PVP in the dispersion of nanosilver wires. Or, for example, copper nanomaterials, which require the addition of PVP for dispersion. Therefore, these waste liquids contain a certain amount of PVP ...

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Abstract

The invention provides a recovery method and application of a metal nano material dispersed under the assistance of polyvinylpyrrolidone. The recovery method of the metal nano-material dispersed with the assistance of polyvinylpyrrolidone comprises the following steps: mixing a metal nano-material waste liquid dispersed with the assistance of polyvinylpyrrolidone with a desorption solution capable of destroying a polyvinylpyrrolidone structure to obtain an agglomerate; and cleaning the agglomerates to obtain the metal nano-material recovered material. According to the method disclosed by the invention, the metal nano-material waste liquid dispersed under the assistance of the polyvinylpyrrolidone is mixed with the desorption solution capable of damaging the structure of the polyvinylpyrrolidone, so that the structure of the polyvinylpyrrolidone is damaged, the metal nano-material dispersed under the assistance of the polyvinylpyrrolidone is quickly agglomerated into the agglomerate, and the agglomerate is quickly separated from the waste liquid; the recovery method is simple and high in efficiency.

Description

technical field [0001] The invention relates to the field of nanomaterial production technology, in particular to a recovery method and application of metal nanomaterials assisted by polyvinylpyrrolidone dispersed. Background technique [0002] The development and application of metal nanomaterials are becoming more and more extensive, but a lot of waste liquid will be generated during the use process. For example, nano-silver wire, as one of the hottest new touch materials in recent years, has the advantages of good conductivity, strong bending resistance, high transmittance, and mature mass production technology. Nanotechnology for conductive touch materials. Among them, silver nanowires are the foundation of everything. From synthesis, purification, dispersion and ink preparation, to making touch film groups, nanosilver wires have to go through a series of processes, among which many silver wires are agglomerated. Even blocks can no longer be used. For this reason, we n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00H01B1/22B82Y40/00
CPCC22B7/006H01B1/22B82Y40/00
Inventor 殷志豪彭颖杰徐林高绪彬郭玉潘克菲
Owner NUOVO FILM SUZHOU CHINA INC
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