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Novel method for preparing Co3O4 spiral nanobelt by using three-dimensional porous kenaf stalk carbon as template

A three-dimensional porous, kenaf rod technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of simple operation and easy preparation

Active Publication Date: 2015-08-19
郑州环智电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although it has been reported in the literature that the preparation of clustered nano-Co 3 o 4 method, and synthesized rod-shaped Co by layer-by-layer self-assembly 3 o 4 method, by Co(CH 3 COO) 2 with NH 3 ·H 2 Cubic Co 3 o 4 method, but the Co 2 (OH) 2 (CO 3 ) 2 precursor, followed by N 2 Calcined at high temperature under protection to obtain Co 3 o 4 Helical nanoribbon crystals have not been reported yet

Method used

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  • Novel method for preparing Co3O4 spiral nanobelt by using three-dimensional porous kenaf stalk carbon as template
  • Novel method for preparing Co3O4 spiral nanobelt by using three-dimensional porous kenaf stalk carbon as template

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Experimental program
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Effect test

Embodiment 1

[0010] 0.3 g of kenaf carbon was placed in 1.0 mM Co(NO 3 ) 2 , 2.0 mM NH 4 F and 5.0 mM CO(NH 2 ) 2 in the mixed solution, stirred for 10 min, put the obtained solution and kenaf carbon into the reaction kettle, and reacted at 120 °C for 5 h. After cooling to room temperature and cleaning with water, put it into a tubular atmosphere furnace under the protection of nitrogen and raise the temperature to 400 °C at 1 °C / min and maintain it for 4 h. You can get Co 3 o 4 Helical nanoribbons.

Embodiment 2

[0012] 0.6 g of kenaf stalks were placed in 2.0 mM Co(NO 3 ) 2 , 4.0 mM NH 4 F and 10.0 mM CO(NH 2 ) 2 in the mixed solution, stirred for 10 min, put the obtained solution and kenaf carbon into the reaction kettle, and reacted at 120 °C for 5 h. After cooling to room temperature and cleaning with water, put it into a tubular atmosphere furnace under the protection of nitrogen and raise the temperature to 300 °C at 1 °C / min and maintain it for 4 h. You can get Co 3 o 4 Helical nanoribbons.

Embodiment 3

[0014] 0.3 g of kenaf stalks were placed in 1.0 mM Co(NO 3 ) 2 , 2.0 mM NH 4 F and 5.0 mM CO(NH 2 ) 2 The mixed solution was stirred for 10 min, and the obtained solution and kenaf carbon were put into a reaction kettle and reacted at 120 °C for 5 h under the protection of nitrogen. After cooling to room temperature and cleaning with water, put it into a tube-type atmosphere furnace and raise the temperature to 500 °C at 1 °C / min in nitrogen and maintain it for 4 h. You can get Co 3 o 4 Helical nanoribbons.

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Abstract

The invention discloses a novel method for preparing a Co3O4 spiral nanobelt by using three-dimensional porous kenaf stalk carbon as a template. The novel method for preparing the Co3O4 spiral nanobelt by using three-dimensional porous kenaf stalk carbon as the template is as below: conducting high temperature calcination on a Co2 (OH)2(CO3)2 precursor grown in the three-dimensional porous kenaf stalk carbon template under nitrogen protection for the synthesis of a Co3O4 spiral nanobelt; and unlike the previously reported hydrothermal reaction, conducting calcination to prepare the Co3O4 cluster crystals. The method for preparing the Co3O4 spiral nanobelt has simple process and uses cheap and readily available raw materials; and the prepared Co3O4 spiral nanobelt has the advantages of large specific surface area, good catalytic activity and convenience for loading other materials.

Description

technical field [0001] The invention relates to a method for preparing helical Co 3 o 4 A new approach to nanoribbons, involving the field of materials chemistry. Background technique [0002] co 3 o 4 As an important transition metal oxide, it is widely used in sensing, catalysis, lithium-ion batteries and other fields. At present, although it has been reported in the literature that the preparation of clustered nano-Co 3 o 4 method, and synthesized rod-shaped Co by layer-by-layer self-assembly 3 o 4 method, by Co(CH 3 COO) 2 with NH 3 ·H 2 Cubic Co 3 o 4 method, but the Co 2 (OH) 2 (CO 3 ) 2 precursor, followed by N 2 Calcined at high temperature under protection to obtain Co 3 o 4 Helical nanoribbon crystals have not been reported yet. The difference between this method and others is that the helical Co 3 o 4 nanobelt. The method has the advantages of simple preparation process, cheap and easy-to-obtain raw materials, and the prepared Co 3 o 4 He...

Claims

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Application Information

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IPC IPC(8): C01G51/04B82Y30/00B82Y40/00
Inventor 汪莉宋永海谢颖珍
Owner 郑州环智电子科技有限公司
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