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Method for simply preparing hexagonal CdO/CdS heterojunction nano composite material

A nanocomposite material and heterojunction technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc.

Inactive Publication Date: 2017-08-18
QUFU NORMAL UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Most of the currently prepared CdO / CdS heterojunction nanomaterials are spherical particles, which are mainly used to crack water to produce hydrogen or degrade heavy metal ions under light conditions, and CdO / CdS heterojunction nanocomposites that can be used for photocatalytic degradation of organic dyes The preparation has not been reported yet

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  • Method for simply preparing hexagonal CdO/CdS heterojunction nano composite material
  • Method for simply preparing hexagonal CdO/CdS heterojunction nano composite material
  • Method for simply preparing hexagonal CdO/CdS heterojunction nano composite material

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Embodiment Construction

[0009] Technical scheme of the present invention is as follows:

[0010] A preparation method of a hexagonal CdO / CdS heterojunction nanocomposite material, comprising the steps of:

[0011] (1) Cadmium nitrate is dissolved in dehydrated alcohol to form cadmium nitrate ethanol solution; Lithium hydroxide is dissolved in secondary distilled water to form lithium hydroxide solution; The mol ratio of described cadmium nitrate and lithium hydroxide is 1 : 2.4~2.6, under the condition of stirring, lithium hydroxide solution is added dropwise in the cadmium nitrate ethanol solution to form a uniform mixed solution, continue to stir for 50~60min, then stand still at 26~29°C for 5~6h, Transfer to a reaction kettle and react at 180-200°C for 10-12 hours; the obtained product is washed and dried to obtain a cadmium hydroxide precursor; the prepared cadmium hydroxide precursor is placed in a muffle furnace, Roasting at 300°C for 1.5-2 hours to obtain nano-cadmium oxide;

[0012] (2) Add...

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Abstract

The invention relates to a method for simply preparing a hexagonal CdO / CdS heterojunction nano composite material. The method mainly comprises the following steps: preparing cadmium hydroxide, used as a precursor, from cadmium nitrate and lithium hydroxide through a solvothermal method, and performing roasting, thus obtaining nano cadmium oxide; then adding the prepared nano cadmium oxide into sodium sulfide for sulfidizing through a hydrothermal method, and performing roasting treatment, thus obtaining the CdO / CdS heterojunction nano composite material. The product has a morphology feature of hexagon consisting of nano particles. The obtained CdO / CdS heterojunction nano composite material is used for photocatalytically degrading methylene blue used as an organic dye and is relatively high in photocatalysis performance.

Description

technical field [0001] The invention relates to a preparation method of a CdO / CdS heterojunction nanocomposite material, which is used for photocatalytic degradation of organic dye methylene blue and belongs to the technical field of nanomaterials. Background technique [0002] At present, the research on heterojunction nanomaterials is considered to be a new field of micro-nanomaterials research. Properly combine two semiconductor materials into a heterostructure, especially two materials with different bandgap widths. Due to the gradual change of the bandgap widths, a built-in electric field is generated at the interface of the two materials, and the Coulomb effect makes electrons and holes powerful. Instead, the movement of electrons and holes can be controlled separately to achieve better charge separation. Therefore, compared with single materials, heterojunction nanostructure materials exhibit superior photoelectric properties, gas sensing properties, and photocatalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/047B01J35/02C02F1/30B82Y30/00B82Y40/00B01J35/00
CPCB82Y30/00B82Y40/00C02F1/30B01J27/047C02F2101/308C02F2305/10B01J35/00B01J35/30B01J35/39Y02W10/37
Inventor 景志红于洋
Owner QUFU NORMAL UNIV
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