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A kind of method for growing nano metal palladium particles on the surface of polymer film

A polymer film and nano-metal technology, applied in nanotechnology, metal material coating process, coating and other directions, can solve problems such as high cost and highly complex equipment, and achieve cost-saving effect

Active Publication Date: 2021-02-26
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It is worth noting that the commonly used methods for depositing nano-palladium particles on the surface of polymer films, such as wet chemical synthesis, pulsed laser ablation, electrochemistry, sputtering, physical vapor deposition, microplasma, thermal decomposition, etc., will not only Involves multiple steps and requires highly complex equipment and high cost, which limits its application

Method used

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  • A kind of method for growing nano metal palladium particles on the surface of polymer film
  • A kind of method for growing nano metal palladium particles on the surface of polymer film
  • A kind of method for growing nano metal palladium particles on the surface of polymer film

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Embodiment 1

[0047]Seefigure 1 , A method for growing nano-metal palladium particles on the surface of a polymer film. The substrate of the polymer film used is silicon or other similar substrates. The polymer film used can be polymethylmethacrylate (PMMA) or polymethacrylic acid ( PMAA), polymethacrylimide (PMI), polyethylene terephthalate (PET), polyamide (PA), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl alcohol ( PVA) and other organic films, the method includes:

[0048]A1: Pretreatment of polymer surface: Place the polymer film in the pretreatment solution and let it stand at 20~25℃ for 10~90 minutes; the pretreatment solution contains grafting raw materials that can be grafted to the polymer surface, pretreatment In the process, a chemical adsorption point that can adsorb palladium ions is grafted on the surface of the polymer film;

[0049]A2: Growth of nano-palladium particles on the polymer surface: Place the product obtained in step A1 in a nano-metal palladium particle growth so...

Embodiment 2

[0066]The steps of growing nano-palladium particles on the surface of polymethacrylic acid (PMAA) film are:

[0067]1. First prepare the PMAA / Si matrix; use acetone, alcohol and deionized water to ultrasonically clean the silicon wafer, then immerse it in an HF solution with a volume ratio of 5% for Si-H treatment for 3 minutes, then place the silicon wafer In the prepared grafting solution, the grafting reaction is carried out at 25°C for 30 minutes, then ultrasonically cleaned with deionized water and dried to obtain a PMAA / Si matrix, such asFigure 6 It can be seen that a layer of PMAA film is grafted on the silicon substrate. The above grafting solution is prepared as follows: first add 50 mL of deionized water into a beaker, and then add 0.1 g of sodium lauryl sulfate, 1 mL of fluoroboric acid, 0.5 mL of hydrofluoric acid, and 2 mL of formaldehyde under magnetic stirring. Acrylic acid and 0.1 g of p-nitrobenzene tetrafluoroborate diazonium salt, stir until clear.

[0068]2. Configure ...

Embodiment 3

[0078]The steps of growing nano-palladium particles on the surface of polymethyl methacrylate (PMMA) film are:

[0079]1. First prepare the PMMA / Si matrix; use acetone, alcohol and deionized water to ultrasonically clean the silicon wafer, immerse it in an HF solution with a volume ratio of 5% for Si-H treatment for 3 minutes, and place the silicon wafer In the configured grafting solution, the grafting reaction is carried out at 25° C. for 30 minutes, ultrasonically cleaned with deionized water and dried to obtain a PMMA / Si matrix. The above grafting solution is prepared as follows: first add 100 mL of deionized water into a polytetrafluoroethylene container, and then add 0.2 g of sodium lauryl sulfate, 2 mL of fluoroboric acid, 1 mL of hydrofluoric acid, 4mL methyl methacrylate and 0.2g p-nitrobenzene tetrafluoroborate diazonium salt, stir until clear.

[0080]2. Configure the pretreatment solution:

[0081]

[0082]3. Place the sample obtained in step 1 vertically in the pretreatment solutio...

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Abstract

The invention discloses a method for growing nano-metal palladium particles on the surface of a polymer film. The method comprises: A1: polymer surface pretreatment, placing the polymer film in a pretreatment solution, and standing at 20-25°C for 10 ~90 min; A2: growing nano-palladium particles on the surface of the polymer, placing the product obtained in step A1 in the nano-metal palladium particle growth solution, and standing at 50-80° C. for 30-60 min. The invention only needs two simple operations to grow nano-metal palladium particles on the surface of the polymer film, and does not require complex and sophisticated equipment, and can be operated in an atmospheric environment, so the invention effectively saves costs.

Description

Technical field[0001]The invention relates to the field of depositing nano metal particles on the surface of a polymer film, in particular to a method for growing nano metal palladium particles on the surface of a polymer film.Background technique[0002]Metal nanoparticles have a large specific surface area. The small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect caused by this make it different from other ordinary materials and have broad application prospects. The precious metal palladium is mainly used as a catalyst with strong catalytic activity and good stability. Nano metal palladium particles have a huge specific surface area, which makes their catalytic performance superior. In addition, palladium has a specific surface enhancement effect on certain substances, and nano-palladium can be used for single-molecule detection of specific molecules.[0003]Depositing nano-palladium particles on the surface of polymer films has many potentia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/44C23C18/20B82Y40/00
Inventor 熊立双刘阳杭弢吴蕴雯高立明李明
Owner SHANGHAI JIAOTONG UNIV
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