Preparation method of a single crystal porous cobaltous oxide nanorod array

A nanorod array and single crystal technology, applied in the field of nanomaterials, can solve the problems of inability to ion exchange synthesis and difficult application, and achieve good application prospects, process stability, and good universality.

Inactive Publication Date: 2019-01-04
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects that the existing technology cannot synthesize single crystal porous CoO nanorod arrays by ion exchange and is difficult to apply to actual industrial production

Method used

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  • Preparation method of a single crystal porous cobaltous oxide nanorod array
  • Preparation method of a single crystal porous cobaltous oxide nanorod array
  • Preparation method of a single crystal porous cobaltous oxide nanorod array

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Embodiment 1

[0033] A Zn seed layer was prepared on the C fiber substrate by magnetron sputtering, the sputtering parameter was 25mA for 400s, and then the growth substrate was annealed at 400°C for 15min in a muffle furnace. Weigh 1.4019g hexamethyltetramine and 2.9749g Zn(NO 3 ) 2 ·6H 2 O, add 400mL deionized water, stir until clear, and prepare 0.25M ZnO hydrothermal growth solution. Place the growth substrate with the growth side facing down and tilt it into the reactor, add growth solution, put the reactor into a steel bottle, add a gasket and tighten it to seal. Put the reaction kettle into a constant temperature drying oven at 100°C, and react for 1 hour. The C fiber substrate prepared with the ZnO nanorod array was taken out, and placed in a muffle furnace for annealing at 500° C. for 1 h. Then place the C fiber substrate in the center of the tube furnace, add 0.2mg CoCl 2 Placed 2cm upstream from the basal position, such as figure 1 As indicated, the reaction furnace was eva...

Embodiment 2

[0036] A Zn seed layer was prepared on the C fiber substrate by magnetron sputtering, the sputtering parameter was 25mA for 400s, and then the growth substrate was annealed at 400°C for 15min in a muffle furnace. Weigh 1.4019g hexamethyltetramine and 2.9749g Zn(NO 3 ) 2 ·6H 2 O, add 400mL deionized water, stir until clear, and prepare 0.25M ZnO hydrothermal growth solution. Place the growth substrate with the growth side facing down and tilt it into the reactor, add growth solution, put the reactor into a steel bottle, add a gasket and tighten it to seal. Put the reaction kettle into a constant temperature drying oven at 100°C, and react for 6 hours. The C fiber substrate prepared with the ZnO nanorod array was taken out, and placed in a muffle furnace for annealing at 500° C. for 1 h. Then place the C fiber substrate in the center of the tube furnace, add 0.2mg CoCl 2 Placed 2cm upstream from the basal position, such as figure 1 As indicated, the reaction furnace was ev...

Embodiment 3

[0039] A Zn seed layer was prepared on the C fiber substrate by magnetron sputtering, the sputtering parameter was 20mA for 800s, and then the growth substrate was annealed at 400°C for 15min in a muffle furnace. Weigh 1.4019g hexamethyltetramine and 2.9749g Zn(NO 3 ) 2 ·6H 2 O, add 200mL deionized water, stir until clear, and prepare 0.5M ZnO hydrothermal growth solution. Place the growth substrate with the growth side facing down and tilt it into the reactor, add growth solution, put the reactor into a steel bottle, add a gasket and tighten it to seal. The reaction kettle was put into a constant temperature drying oven at 100°C, and reacted for 9 hours. The C fiber substrate prepared with the ZnO nanorod array was taken out, and placed in a muffle furnace for annealing at 500° C. for 1 h. Then place the C fiber substrate in the center of the tube furnace, add 0.2mg CoCl 2 Placed 2cm upstream from the basal position, such as figure 1 As indicated, the reaction furnace w...

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Abstract

A method for preparing a monocrystalline porous cobalt(II) oxide (CoO) nanorod array is as follows: a growth substrate with a prepared Zn seed layer is placed at 400-500 DEG C for annealing for 0.15-1h; a 0.1-0.5M ZnO hydrothermal growth liquid is prepared; the annealed growth substrate is placed in a reactor, the growth substrate of the annealed growth substrate is tilted down, the ZnO hydrothermal growth liquid is added, the reactor is placed in a cylinder and sealed, the cylinder is placed in a 100 DEG C constant temperature drying oven for preparation of ZnO nanorod arrays; the growth substrate is then placed at 500 DEG C for annealing for 1h; the annealed growth substrate is placed at the center of a tube furnace, CoCl2 powder is used as a Co evaporation source, the tube furnace is vacuumized to 0.1-0 .5Torr, then a carrier gas is introduced into the tube furnace, and the tube furnace is heated to 400-700 DEG C, and thermally insulated for 0.1-1h to obtain the monocrystalline porous cobalt(II) oxide (CoO) nanorod array very conducive to gas adsorption. The monocrystalline porous cobalt(II) oxide (CoO) nanorod array is stable in process, well universal, and suitable for the majority of flexible substrates and conductive substrates, makes industrially practical application possible, and has good application prospects in the fields of fuel cells, catalysis, and the like.

Description

technical field [0001] The invention relates to nanometer materials, in particular to a method for preparing a single-crystal porous CoO nanorod array. Background technique [0002] Energy is the substance that provides energy conversion to nature, and is the material basis of human activities. Advanced energy technology continues to promote the development of human society. Fossil energy refers to the energy formed by the evolution of organisms under the ground for tens of thousands of years. However, the use of fossil energy has brought about non-negligible environmental pollution, which has put the ecological balance of the earth in jeopardy. Since the electrochemical system can obtain energy sustainably under the premise of environmental friendliness, it is considered to be a good substitute for fossil fuels in the future. Among them, compared with traditional batteries and capacitors, the energy transmission density of fuel cells can be several orders of magnitude high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/16C30B25/18B82Y40/00
CPCB82Y40/00C30B25/183C30B29/16
Inventor 闫东阳凌涛
Owner TIANJIN UNIV
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