Preparation method of zinc oxide nanowire array/ foamy graphene composite material and application thereof

A technology of zinc oxide nanowires and foamed graphene, applied in the direction of zinc oxide/zinc hydroxide, graphene, nano-carbon, etc., can solve the problems of low sensitivity and high detection limit, and achieve increased sensitivity, rapid transfer, and improved electrocatalysis performance effect

Inactive Publication Date: 2014-02-05
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problems of low sensitivity and high detection limit when existing materials are applied to L-dopa detection, thereby providing a preparation method and application of zinc oxide nanowire array / foamed graphene composite material

Method used

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  • Preparation method of zinc oxide nanowire array/ foamy graphene composite material and application thereof
  • Preparation method of zinc oxide nanowire array/ foamy graphene composite material and application thereof
  • Preparation method of zinc oxide nanowire array/ foamy graphene composite material and application thereof

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specific Embodiment approach 1

[0028] Specific embodiment one: the preparation method of a kind of zinc oxide nanowire array / foamed graphene composite material is carried out according to the following steps in the present embodiment:

[0029] 1. Chemical vapor deposition method:

[0030]1) Place nickel foam in the center of a quartz tube furnace, and heat it from room temperature at a rate of 20°C / min to 40°C / min under the protection of argon and hydrogen to a temperature of 1000°C to 1100°C. Keep warm for 30min~60min under the condition of 1000℃~1100℃, feed methane gas into the tube furnace at a rate of 5sccm~10sccm for 5min~20min under the condition of temperature 1000℃~1100℃, and then put the quartz tube furnace in 80°C / min-100°C / min cooling rate from 1000°C-1100°C to room temperature to obtain graphene-wrapped nickel foam; the density of the foam nickel described in step 1) is 420g / m 2 ~440g / m 2 , with a thickness of 1.6 mm to 2.0 mm; the flow rate of argon gas described in step 1) is 480 sccm to 500...

specific Embodiment approach 2

[0040] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1 1) the nickel foam is placed in the center of the quartz tube furnace, and it is heated from room temperature at 25°C / min to 35°C under the protection of argon and hydrogen. The heating rate of °C / min is heated to a temperature of 1000 °C to 1100 °C, and the temperature is kept at 1000 °C to 1100 °C for 40 min to 50 min, and the temperature is 1000 °C to 1100 °C. Methane gas is fed at a rate of 7sccm to 9sccm for 10min to 15min, and then the quartz tube furnace is cooled from a temperature of 1000℃ to 1100℃ to room temperature at a cooling rate of 85℃ / min to 95℃ / min to obtain graphene-wrapped Nickel foam; the density of nickel foam described in step 1) is 425g / m 2 ~435g / m 2 , with a thickness of 1.6 mm to 2.0 mm; the flow rate of argon gas in step 1) is 500 sccm, and the flow rate of hydrogen gas is 200 sccm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 1 2), polymethyl methacrylate is dissolved in ethyl lactate, and the temperature is 90°C-110°C Heat and stir for 1h to 2h under the conditions to obtain a mixed solution, use a sample gun to add the mixed solution dropwise to the surface of the nickel foam wrapped in graphene obtained in step 1) at room temperature Naturally dry at 150°C to 200°C for 0.5h to 1h to obtain foamed graphene coated with polymethyl methacrylate; the methacrylic acid in the mixed solution described in step 1 2) The mass fraction of methyl ester is 4% to 5%. Others are the same as those in the first or second embodiment.

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Abstract

A preparation method of a zinc oxide nanowire array / foamy graphene composite material and an application thereof relate to a preparation method of a composite material and an application thereof. The invention aims to solve technical problems of low sensitivity and high limit of detection when a present material is applied in L-dopa detection. The preparation method provided by the invention comprises: 1, a chemical vapor deposition method; and 2, a hydrothermal synthesis method. The zinc oxide nanowire array / foamy graphene composite material can be used as an electrode material to detect L-dopa. The preparation method is mainly used in preparation of the zinc oxide nanowire array / foamy graphene composite material.

Description

technical field [0001] The invention relates to a preparation method and application of a composite material. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial with a hexagonal close-packed honeycomb structure composed of monolayer carbon atoms with sp2 hybrid orbitals. The special single-atom structure of graphene makes it have a series of excellent properties such as good thermal and electrical conductivity, high specific surface area, and good chemical stability. It has become one of the most researched materials and has attracted extensive attention. The application prospect is very broad. At present, there are many methods for preparing graphene, among which micromechanical exfoliation of graphite, chemical oxidation and chemical vapor deposition are widely used. Micromechanical exfoliation of graphite can produce high-quality graphene, but the yield is low and it is not suitable for large-scale production. The chemical oxidation method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30B82Y40/00C01B31/04C01G9/02C01B32/184
Inventor 岳红彦黄硕郭二军俞泽民王丽萍张建交张春宇常靖高鑫张虹
Owner HARBIN UNIV OF SCI & TECH
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