Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof

A technology of cobalt trioxide nanometer and composite nanomaterials, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., and can solve the problems of low efficiency of quantum dots, small specific surface area, and few active sites. Achieve excellent photocatalytic performance, large specific surface area, and many sites

Active Publication Date: 2017-05-10
FUJIAN MEDICAL UNIV
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Problems solved by technology

In recent years, graphite-phase nitrogen carbide semiconductor materials, as a metal-free visible light photocatalyst, have attracted widespread attention from scientists and researchers, but there are still some defects that cannot be ignored: small specifi

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  • Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof
  • Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof
  • Graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite nanomaterial of scale-shaped structure and preparation method and application thereof

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Embodiment 1

[0026] A two-dimensional g-C 3 N 4 Nanosheets / cobalt tetroxide nanosheets fish-scale structure composite nanomaterials are prepared by hydrothermal method. The steps are as follows:

[0027] g-C 3 N 4 Preparation of nanosheets

[0028] Take 2g of melamine powder and spread it on the bottom of a 50 mL crucible, close the lid, and transfer it to the muffle furnace. The temperature is increased to 550 °C at a rate of 2.3 °C / min and kept for 4 h. Then, the temperature is increased at 2.3 °C / min. Speed ​​down to room temperature, get gC 3 N 4 Light yellow powder.

[0029] Take 0.3 g of g-C prepared above 3 N 4 Light yellow powder, add 200 mL deionized water, ultrasonically peel for 6 hours, then centrifuge the solution at 3000 rpm for 5 minutes to remove the unpeeled solid from the lower layer, take out the supernatant and freeze-dry to obtain g-C 3 N 4 Nano flake powder.

[0030] Take 8mg two-dimensional g-C 3 N 4 The nanosheets were fully dissolved in 8 mL of aqueous solution under ultra...

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Abstract

The invention aims at providing a method for synthesizing a scale-shaped graphite-phase nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material and belongs to the technical field of material preparation and catalysis. The composite material is prepared from the raw materials of functionalized graphite-phase nitrogen carbide and cobalt salt through a hydrothermal method at high temperature. The prepared scale-shaped two-dimensional nitrogen carbide nanosheet/cobaltosic oxide nanosheet composite material is in morphology that a scale-shaped cobaltosic oxide nanosheet nanocomposite material evenly grows on the surface of a two-dimensional nitrogen carbide nanosheet. Compared with a traditional pure two-dimensional nitrogen carbide nanomaterial, the specific surface area of the material and the screening capacity of the material to a catalytic substrate are effectively improved, and the material has more efficient photocatalytic performance. The preparation method has the advantages of simple technology, low cost and high catalytic efficiency; the prepared material has efficient carbon dioxide reducing capacity, and thus has good application prospect in the photocatalysis field of environmental modification, greenhouse gas elimination and the like.

Description

Technical field [0001] The invention belongs to the technical field of material preparation and catalysis, and specifically relates to a graphite phase nitrogen carbide nanosheet / cobalt tetroxide nanosheet fish scale structure composite nano material, and a preparation method and application thereof. Background technique [0002] The use of solar energy to solve global energy and environmental problems is an important research direction in the current scientific research field. Semiconductor photocatalytic nanomaterials can make full use of solar energy at room temperature, and have many advantages such as low cost and pollution-free. The problem of energy shortage is of great significance. For many years, researchers have been committed to developing visible light catalysts with stability and high efficiency. In recent years, the graphite-phase nitrogen carbide semiconductor material as a metal-free visible light photocatalyst has received extensive attention from scientists an...

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/004
Inventor 孙伟明李祥辉李春艳
Owner FUJIAN MEDICAL UNIV
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