Zinc oxide micro/nano composite structure array film and preparation method thereof

A composite structure, zinc oxide nanorod technology, applied in the field of zinc oxide micro/nano composite structure array film and its preparation, can solve the problem that the metal layer cannot have the physical and chemical properties of the zinc oxide layer, the limited superior performance and the unique use, Can not obtain zinc oxide array film and other problems, to achieve the effect of high stability, high production efficiency, high specific surface area

Inactive Publication Date: 2011-08-31
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the two-dimensional ordered nanostructured metal material and its preparation method have deficiencies. First, the dielectric sphere and the outer package of the metal-wrapped dielectric sphere that constitute the two-dimensional ordered nanostructured metal material Although the thickness of the metal layer has a large size difference and the two are a composite structure, they still belong to the nanoscale rather than a micro / nano composite structure array. Similarly, the hollow structure of a two-dimensional ordered nanostructure metal material Metal spheres are both nano-sized and only have a single-shell structure, rather than a composite structure with different structures on the inner and outer layers, so that it is the same as a metal-wrapped dielectric sphere, which limits its possible superior performance and unique uses; secondly , whether it is a metal-wrapped dielectric ball or a hollow metal ball, the surface of the metal layer as the shell is too smooth, making it extremely difficult to have a high specific surface area, especially the metal layer cannot have the physical and chemical properties of the zinc oxide layer ; Once again, the preparation method can not obtain the zinc oxide array film with different micro / nano composite structures inside and outside the layer

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  • Zinc oxide micro/nano composite structure array film and preparation method thereof
  • Zinc oxide micro/nano composite structure array film and preparation method thereof
  • Zinc oxide micro/nano composite structure array film and preparation method thereof

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Embodiment 1

[0023] The concrete steps of preparation are:

[0024] First, the substrate with a single-layer crystal template composed of polystyrene colloidal spheres (or silica spheres) with a diameter of 2 μm is placed under a pressure of 5 Pa, and a layer with a thickness of 5 nm is deposited by ion sputtering. A gold film to obtain a gold film ball array; wherein, the substrate is glass. Then place the substrate with the gold film ball array on it in the zinc oxide electrolyte at a temperature of 60°C, use it as the working electrode, and deposit it at a deposition current density of -0.3mA / cm 2 The three-electrode method was used for electrodeposition for 4 hours; wherein, the counter electrode in the three-electrode method was a graphite electrode, the reference electrode was a saturated calomel electrode, and the zinc oxide electrolyte was a zinc nitrate solution with a concentration of 0.03M. made approximately figure 1 The dielectric spheres shown are polystyrene colloidal sphe...

Embodiment 2

[0028] The concrete steps of preparation are:

[0029] First, the substrate with a single-layer crystal template composed of polystyrene colloidal spheres (or silicon dioxide spheres) with a diameter of 2 μm is placed under a pressure of 6.5 Pa, and a layer of 15 nm-thickness is deposited by ion sputtering. layer gold film to obtain a gold film ball array; wherein, the substrate is glass. Then place the substrate with the gold film ball array on it in the zinc oxide electrolyte at a temperature of 65°C, use it as the working electrode, and deposit it at a deposition current density of -0.6mA / cm 2 The three-electrode method was used for electrodeposition for 2.5 hours; wherein, the counter electrode in the three-electrode method was a graphite electrode, the reference electrode was a saturated calomel electrode, and the zinc oxide electrolyte was a zinc nitrate solution with a concentration of 0.04M. made approximately figure 1 The dielectric spheres shown are polystyrene col...

Embodiment 3

[0033] The concrete steps of preparation are:

[0034] First place the substrate with a single-layer crystal template composed of polystyrene colloidal spheres (or silica spheres) with a diameter of 2 μm under a pressure of 8 Pa, and deposit a layer with a thickness of 25 nm by ion sputtering. A gold film to obtain a gold film ball array; wherein, the substrate is glass. Then place the substrate with the gold film ball array on it in the zinc oxide electrolyte at a temperature of 70°C, use it as the working electrode, and deposit it at a deposition current density of -1mA / cm 2 The three-electrode method was used for electrodeposition for 1 h; wherein, the counter electrode in the three-electrode method was a graphite electrode, the reference electrode was a saturated calomel electrode, and the zinc oxide electrolyte was a zinc nitrate solution with a concentration of 0.05M. made as figure 1 The dielectric spheres shown are polystyrene colloidal spheres, and the outer surface...

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Abstract

The invention discloses a zinc oxide micro / nano composite structure array film and a preparation method thereof. In the film, an ordered hexagonal single-layer sphere array is arranged on a substrate; each sphere consists of a dielectric sphere, and a gold film and a zinc oxide nano-stick / cone coated in sequence on the outer surface of the dielectric sphere; the outer diameter of the dielectric sphere is 1-30 mum; the thickness of the gold film is 5-50 mum; the stick / cone axis of the zinc oxide nano-stick / cone is vertical to a sphere center; the length of the stick / cone is 200-800 nanometers; the diameter of the stick / cone is 80-160 nanometers; and the taper of the cone is 3-30 degrees. The method comprises the following steps of: performing ion sputtering and gold film deposition on the substrate with a single-layer crystal template at the pressure of 5-10 Pa to obtain a gold film sphere array; putting the gold film sphere array in zinc oxide electrolyte with the temperature of 60-80 DEG C; and performing electrolytic deposition at the deposition current density of between -0.3 mA / cm<2> and -2.0 mA / cm<2> by adopting a three-electrode method for 30 minutes to 4 hours to obtain the zinc oxide micro / nano composite structure array film. The film can be widely applied to the fields of photoelectronic devices, surface microfluids, sensors and the like.

Description

technical field [0001] The invention relates to a micro / nano composite structure array film and a preparation method thereof, in particular to a zinc oxide micro / nano composite structure array film and a preparation method thereof. Background technique [0002] The micro / nano composite structure array film, which has the advantages of both microstructure array and nanostructure materials, has important application value because of its uniform surface, high activity, stable structure and strong coupling effect, and can be widely used in high activity, high stability and repeatability devices. For example, polystyrene microsphere / carbon nanotube composite structure array film has adjustable surface wetting behavior, and can realize surface superhydrophobic properties under specific conditions, which is more efficient than pure carbon nanotube film or ordered microsphere array. Excellent adjustable wetting properties. Another example: noble metal micro / nano composite structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81B7/00B82B1/00B81C1/00B82B3/00
Inventor 段国韬罗媛媛刘广强张洪文蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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