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Transplantable ultrathin nano-porous gold film and method for preparing the same

A nanoporous and gold film technology, which is applied in the field of nanomaterials and thin film materials, can solve the problems of difficult mass production and difficult preparation of uniform nanoporous metal thin films.

Inactive Publication Date: 2006-07-19
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is very difficult to prepare a uniform nanoporous metal film. For example, it is necessary to deposit noble metals on the original template to form a porous metal film, which is difficult to produce in batches.

Method used

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  • Transplantable ultrathin nano-porous gold film and method for preparing the same
  • Transplantable ultrathin nano-porous gold film and method for preparing the same
  • Transplantable ultrathin nano-porous gold film and method for preparing the same

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Embodiment Construction

[0019] Further describe the ultra-thin nanoporous gold film that the present invention proposes below by embodiment

[0020] Using freshly cleaved mica flakes as a substrate, the 4 × 10 -3 Under the vacuum degree of Pa, the mixture of Au and Cu (Au x Cu 1-x ). The thickness of the alloy film was monitored using a quartz oscillator. Then, the samples were put into an oven and annealed in the air atmosphere at a temperature of 200°C for 25 hours. Afterwards, the film was immersed in 0.1mol / L dilute hydrochloric acid for corrosion treatment to remove Cu oxide and unoxidized nano-Cu in the film. In the process of corroding with hydrochloric acid, the gold film will spontaneously peel off from the mica substrate, and the sample area of ​​the peeled gold film can reach 4cm 2 about. The sample was washed repeatedly with deionized water to remove the reaction products and other impurities adsorbed on the surface of the film. Finally, store in deionized water for later use.

[...

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Abstract

The preparation method for transplantable ultrathin nano porous gold film comprises: preparing Au-Cu alloy with vacuum evaporation method, thermal annealing, and removing alloy with acidic solution. This product can be used in catalysis, bio-sense, porous electrode and other fields as well as nano grating and non-linear optics fields for special optical and high light transmission features

Description

technical field [0001] The invention belongs to the technical field of nanometer materials and thin film materials, and in particular relates to a transplantable ultrathin nanoporous gold membrane and a preparation method thereof. technical background [0002] Nanomaterials are obviously different from traditional continuous solid materials. Due to the effect of nanometer size and large specific surface area, such materials will exhibit special physical and chemical properties, including special photoelectric functional properties, transport properties and mechanical properties. Nanomaterials come in many forms, such as nanoparticles, nanorods, nanowires, nanometer-thick films, and nanosolid (nanophase) materials. The definition of nanomaterials is mainly based on scale effects, so nanomaterials can be nanoscale entities or nanoscale spaces. [0003] Porous noble metal materials have attracted extensive attention due to their excellent chemical stability and wide applicatio...

Claims

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Application Information

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IPC IPC(8): C23C30/00C23F17/00C23C14/24C23C14/14C23C14/18C23G1/00
Inventor 徐伟周辉金兰
Owner FUDAN UNIV
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