Copper oxide-cobalt oxide co-doped alumina hollow sphere material and preparation method thereof

An oxide and co-doping technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve high specific surface area, simple and clear steps, and low price

Inactive Publication Date: 2018-10-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings and deficiencies of the above existing production methods, the object of the present invention is to provide a copper cobalt oxide doped alumina hollow sphere material and its preparation method

Method used

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  • Copper oxide-cobalt oxide co-doped alumina hollow sphere material and preparation method thereof
  • Copper oxide-cobalt oxide co-doped alumina hollow sphere material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The preparation of a copper oxide-doped alumina hollow sphere material Cu / AHS in this embodiment specifically includes the following steps:

[0025] Using sucrose as sugar and carbon source, Al(NO 3 ) 3 9H 2 O is the metal precursor of aluminum, Cu(NO 3 ) 2 2.5H 2 O is the metal precursor of copper, and Cu / AHS is prepared.

[0026] 5.705g sucrose (16.67mmol), 3.126g Al(NO 3 ) 3 9H 2 O(8.33mmol) and 0.1937g Cu(NO 3 ) 2 2.5H 2 O (0.833 mmol) was co-dissolved in 25 mL of deionized water to give a clear solution. After stirring with a magnetic stirrer for 30 minutes at 25°C, the mixture was transferred to a stainless steel reaction kettle with a polytetrafluoroethylene liner, and after hydrothermal reaction at 180°C for 25 hours, it was naturally cooled to room temperature, and the obtained black The solid was washed 3 times with deionized water and absolute ethanol in sequence (the volume ratio of deionized water and absolute ethanol used each time was 2:1), dr...

Embodiment 2

[0028] The preparation of a cobalt oxide-doped alumina hollow sphere material Co / AHS in this embodiment specifically includes the following steps:

[0029] Using sucrose as sugar and carbon source, Al(NO 3 ) 3 9H 2 O is the metal precursor of aluminum, Co(NO 3 ) 2 ·6H 2 O is the metal precursor of cobalt, and Co / AHS is prepared.

[0030] 5.705g sucrose (16.67mmol), 3.126g Al(NO 3 ) 3 9H 2 O(8.33mmol) and 0.2424g Co(NO 3 ) 2 ·6H 2 O (0.833 mmol) was co-dissolved in 25 mL of deionized water to give a clear solution. After stirring with a magnetic stirrer for 40 minutes at 30°C, the mixed solution was transferred to a stainless steel reaction kettle with a polytetrafluoroethylene liner. After hydrothermal reaction at 180°C for 30 hours, it was naturally cooled to room temperature, and the obtained black The solid was washed three times with deionized water and absolute ethanol in sequence (the volume ratio of deionized water and absolute ethanol used each time was 2:1...

Embodiment 3

[0032] A kind of copper cobalt oxide doped aluminum oxide hollow sphere material Cu of the present embodiment 9 co 1 The preparation of / AHS specifically comprises the following steps:

[0033] Using sucrose as sugar and carbon source, Al(NO 3 ) 3 9H 2 O is the metal precursor of aluminum, Cu(NO 3 ) 2 2.5H 2 O and Co(NO 3 ) 2 ·6H 2 O is used as the metal precursor of copper and cobalt, respectively, to prepare Cu 9 co 1 / AHS.

[0034] 5.705g sucrose (16.67mmol), 3.126g Al(NO 3 ) 3 9H 2 O(8.33mmol), 0.1744g Cu(NO 3 ) 2 2.5H 2 O(0.750mmol) and 0.0243g Co(NO 3 ) 2 ·6H 2O (0.083mmol) was co-dissolved in 25mL deionized water to obtain a clear solution. After stirring with a magnetic stirrer for 30 minutes at 35°C, the mixed solution was transferred to a stainless steel reactor with a polytetrafluoroethylene liner. After hydrothermal reaction at 200°C for 20 hours, it was naturally cooled to room temperature, and the obtained black solid was washed with deionize...

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Abstract

The invention discloses a copper oxide-cobalt oxide co-doped alumina hollow sphere material and a preparation method thereof, and belongs to the field of inorganic functional materials. The preparation method comprises following steps: dissolving cane sugar, aluminum nitrate nonahydrate, copper nitrate with 2.5 H2O molecules, and cobalt nitrate hexahydrate into deionized water, stirring for 30 to50 minutes at a room temperature to obtain a clear and transparent solution; transferring the transparent solution to a stainless steel reactor with a polytetrafluoroethylene inner container, carryingout hydrothermal reactions for 20 to 30 hours at a temperature of 180 to 200 DEG C to obtain a hydrothermal reaction product A; subjecting the A to suction filtration to obtain a black brown solid, washing the solid by deionized water and anhydrous ethanol for several times, drying the solid in vacuum for 5-8 hours at a temperature of 80-100 DEG C to obtain solid powder B; burning the B in a box-type resistance furnace for 5 to 8 hours at a temperature of 500-600 DEG C to obtain the copper oxide-cobalt oxide co-doped alumina hollow sphere material. The method has the advantages of simple andconvenient operation, green, environmental friendliness, and high yield. The morphology is easy to control. The provided material has a great application value in fields such as catalyst carriers, drug delivery, luminous materials, chemical sensors, ceramic, pigments, and the like.

Description

technical field [0001] The invention relates to the field of inorganic functional materials with hollow structures, in particular to a copper-cobalt oxide co-doped alumina hollow sphere material and a preparation method thereof. Background technique [0002] Alumina is an important non-metallic material with good thermal stability and adjustable acid sites, which can be used in many fields such as catalysts, adsorbents and filters. Alumina has a variety of structures, including nanorods, nanotubes, nanofibers, nanospheres, layered structures, ordered mesoporous structures, and hollow spherical structures. Compared with the traditional solid structure, the hollow structure has the characteristics of low density, high specific surface area, short ion diffusion path, low thermal expansion coefficient, and low refractive index. Biomacromolecules (proteins and enzymes, etc.), luminescent materials, chemical sensors, ceramics and pigments have inestimable application value. [0...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J35/08B01J35/10
CPCB01J23/002B01J23/75B01J2523/00B01J35/51B01J35/61B01J35/40B01J2523/17B01J2523/31B01J2523/845
Inventor 李白滔黄静王秀军
Owner SOUTH CHINA UNIV OF TECH
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