Co<0.85>Se catalyst material and preparation method thereof

A catalyst and chemical catalysis technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., can solve the problems of restricting the development of high-performance Co materials, poor controllability of morphology, and unfavorable widespread promotion, etc. The effect of easy promotion, simple preparation method and mild reaction conditions

Inactive Publication Date: 2014-07-30
ANHUI NORMAL UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, the above method prepares Co x The method of Se can only prepare sheet-like or graphene-like structures, and the highly toxic sodium selenite is used, which has poor controllability on the morphology and is not conducive to widespread promotion, thereby limiting high-performance Co x Development of Se materials

Method used

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  • Co&lt;0.85&gt;Se catalyst material and preparation method thereof
  • Co&lt;0.85&gt;Se catalyst material and preparation method thereof
  • Co&lt;0.85&gt;Se catalyst material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A Co 0.85 The Se catalyst material has a beam-like structure with a length of 1.0-1.8 microns and a diameter of 300-600 nanometers.

[0026] A Co 0.85 The preparation method of Se catalyst material includes the following steps:

[0027] A. Dissolve cobalt chloride and urea in a mixed solvent formed by glycerin and water, stir well to form a uniform solution, then put them into a polytetrafluoroethylene lined high pressure reactor, and react under hydrothermal conditions at 140°C for 10 After hours, the product is naturally cooled to room temperature, and the product is washed clean with deionized water and ethanol by centrifugation, and dried in vacuum at 60°C for 6 hours to constant weight, to obtain bundle Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 O precursor;

[0028] B. Weigh 100 parts by mass of the above-mentioned bunched Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 The O precursor is ultrasonically dispersed in deionized water to form a dispersion, the freshly prepared sodium hydrog...

Embodiment 2

[0033] A Co 0.85 The Se catalyst material has a beam-like structure with a length of 1.0-2.5 microns and a diameter of 350-650 nanometers.

[0034] A Co 0.85 The preparation method of Se catalyst material includes the following steps:

[0035] A. Dissolve cobalt chloride and urea in a mixed solvent of glycerin and water, stir well to form a uniform solution, then put them into a polytetrafluoroethylene lined high pressure reactor, and react at 160℃ for 8 hours under hydrothermal conditions , And then naturally cooled to room temperature, the product was washed clean with deionized water and ethanol by centrifugation, and dried in vacuum at 60°C for 6 hours to constant weight to obtain bundle Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 O precursor;

[0036] B. Weigh 100 parts by mass of the above-mentioned bunched Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 The O precursor is ultrasonically dispersed in deionized water to form a dispersion, the freshly prepared sodium hydrogen selenide is added dro...

Embodiment 3

[0039] A Co 0.85 The Se catalyst material has a beam-like structure with a length of 1.2-2.5 microns and a diameter of 400-720 nanometers.

[0040] A Co 0.85 The preparation method of Se catalyst material includes the following steps:

[0041] A. Dissolve cobalt chloride and urea in a mixed solvent of glycerin and water, stir well to form a uniform solution, then put them into a polytetrafluoroethylene lined high pressure reactor, and react at 200°C for 3 hours under hydrothermal conditions , And then naturally cooled to room temperature, the product was washed clean with deionized water and ethanol by centrifugation, and dried in vacuum at 60°C for 6 hours to constant weight to obtain bundled Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 O precursor;

[0042] B. Weigh 100 parts by mass of the above-mentioned bunched Co(OH) 1.1 (CO 3 ) 0.35 Cl 0.2 ·NH 2 The O precursor is ultrasonically dispersed in deionized water to form a dispersion, the freshly prepared sodium hydrogen selenide is added d...

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Abstract

The invention provides a Co<0.85>Se catalyst material and a preparation method thereof. The Co<0.85>Se catalyst material has a beam-shaped structure with a length being 0.8-2.5 microns and a diameter being 300-800nm. The preparation method of the Co<0.85>Se catalyst material comprises the following steps: A, dissolving cobalt salt and carbamide in a mixed solution containing polyhydric alcohols and water, reacting under the hydrothermal condition, and then centrifuging, washing and drying a product to obtain Co(OH)<1.1>(CO3)<0.35>Cl<0.2>.nH2O precursor; and B, mixing the precursor with a sodium hydrogen selenide solution, naturally cooling to room temperature under the hydrothermal condition, and then centrifuging, washing and drying the product to obtain the Co<0.85>Se catalyst material. The Co<0.85>Se catalyst material is capable of realizing controllable synthesis of shapes of catalysts; the obtained Co<0.85>Se micro-nano material is applicable to organic catalysis and dye degradation, shows excellent catalytic activity and has great and potential application value in hydrogenation.

Description

Technical field [0001] The invention relates to a preparation method of micro-nano materials, in particular to a bundle of Co 0.85 Se catalyst material and preparation method. Background technique [0002] Co x As a semiconductor material with good electrical and nonlinear optical properties, Se nanomaterials have been used in many applications in biomarkers, solar cells, optoelectronic sensors, infrared light window materials, and environmental management in recent years. As we all know, the properties of materials are often affected by morphology, phase, composition, size, etc. Therefore, in recent years, Co x The controllable synthesis of Se nanomaterials has become a research hotspot. [0003] Recently, for non-integer ratios Co 0.85 The preparation of Se nanomaterials has attracted some attention. Wang (J. Am. Chem. Soc., 2012, 134, 10953-10958) et al. used a hydrothermal method to prepare Co 0.85 Se nanosheets play an important role in solar cells. Song (CrystEngComm, 2011,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/02C01B19/04C07C213/02C07C215/76
Inventor 吴孔林张再先魏先文孙健李祥子
Owner ANHUI NORMAL UNIV
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