Preparation method of hollow Co0.85Se nanometer polyhedral particles

A polyhedral, nanotechnology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of good powder dispersion, short production cycle and novel method

Active Publication Date: 2017-12-15
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the literature survey is concerned, no hydrothermal method has been found to prepare hollow Co 0.85 Report on Se Nanopolyhedral Particles

Method used

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  • Preparation method of hollow Co0.85Se nanometer polyhedral particles
  • Preparation method of hollow Co0.85Se nanometer polyhedral particles
  • Preparation method of hollow Co0.85Se nanometer polyhedral particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh Co(NO 3 ) 2 ·6H 2 0.3 g of O powder, 0.3 g of dimethylimidazole powder and 25 ml of methanol form a mixed solution respectively. Stir the prepared two solutions separately for 5 minutes, then add the mixed solution of dimethylimidazole and methanol dropwise into the mixed solution of cobalt nitrate hexahydrate and methanol for reaction. Stirring, keeping at room temperature for 24h, centrifuging and washing to obtain polyhedral precursor MOFs of Co. Take 40mg of Co precursor and 12ml of deionized water to make a mixed solution, then gradually add 20mg of selenous acid, 20ml of hydrazine hydrate, stir for 1min, transfer the mixed solution to the reactor for hydrothermal treatment, and keep the hydrothermal temperature at 160 ℃, the hydrothermal time is kept at 24h, and the powder after the reaction is centrifuged to clean, and finally the hollow Co 0.85 Se nanopolyhedral particles.

Embodiment 2

[0022] Weigh Co(NO 3 ) 2 ·6H 2 O powder 0.5g, dimethylimidazole powder 0.5g and 40ml methanol respectively form a mixed solution. Stir the prepared two solutions separately for 5 minutes, then add the mixed solution of dimethylimidazole and methanol dropwise into the mixed solution of cobalt nitrate hexahydrate and methanol for reaction. Stirring, keeping at room temperature for 24h, centrifuging and washing to obtain polyhedral precursor MOFs of Co. Take 30mg of Co precursor and 15ml of deionized water to make a mixed solution, then gradually add 20mg of selenous acid and 20ml of hydrazine hydrate, stir for 1min, transfer the mixed solution to the reactor for hydrothermal treatment, and keep the hydrothermal temperature at 160 ℃, the hydrothermal time is kept at 24h, and the powder after the reaction is centrifuged to clean, and finally the hollow Co 0.85 Se nanopolyhedral particles.

Embodiment 3

[0024] Weigh Co(NO 3 ) 2 ·6H 2 0.3 g of O powder, 0.3 g of dimethylimidazole powder and 25 ml of methanol form a mixed solution respectively. Stir the prepared two solutions separately for 5 minutes, then add the mixed solution of dimethylimidazole and methanol dropwise into the mixed solution of cobalt nitrate hexahydrate and methanol for reaction. Stirring, keeping at room temperature for 24h, centrifuging and washing to obtain polyhedral precursor MOFs of Co. Take 40mg of Co precursor and 15ml of deionized water to make a mixed solution, then gradually add 10mg of selenous acid and 20ml of hydrazine hydrate, stir for 1min, then transfer the mixed solution to the reactor for hydrothermal treatment, and keep the hydrothermal temperature at 180 ℃, the hydrothermal time is kept at 18h, and the powder after the reaction is centrifuged to clean, and finally the hollow Co 0.85 Se nanopolyhedral particles.

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Abstract

The invention discloses a preparation method of hollow Co0.85Se nanometer polyhedral particles. The preparation method comprises following steps: 1, cobalt nitrate hexahydrate and dimethyl imidazole are dissolved in methanol respectively so as to obtain two mixed solutions via stirring; 2, the mixed solution of dimethyl imidazole and methanol is added into the mixed solution of cobalt nitrate hexahydrate and methanol drop by drop for reaction with stirring, stirring is stopped when dropwise adding is completed, an obtained mixture is maintained at room temperature for a certain period of time, and then is subjected to centrifugation and washing so as to obtain a polyhedral precursor MOFs of Co; and 3, a certain amount of the polyhedral precursor MOFs of Co and deionized water are prepared into a mixed solution, selenous acid and hydrazine hydrate are added gradually, an obtained mixed material is stirred slightly, and then is delivered into a reaction vessel for hydro-thermal treatment, wherein hydro-thermal temperature is controlled to be 140 to 200 DEG C, and hydro-thermal treatment time is controlled to be 12 to 36h; after reaction, an obtained powder is subjected to centrifugation washing so as to obtain the hollow Co0.85Se nanometer polyhedral particles. According to the preparation method, the hollow Co0.85Se nanometer polyhedral particles are prepared via controlling the reaction conditions; the preparation method is novel; production period is short; and reference is provided for preparation of selenides of hollow structures.

Description

technical field [0001] The invention belongs to the field of functional nanomaterials, in particular to a hollow Co 0.85 Preparation method of Se nano polyhedral particles. Background technique [0002] Selenide nanomaterials are an important class of semiconductor materials. Because of their excellent optical, electrical, thermal, and magnetic properties, they have become one of the important research directions in the fields of chemistry, materials, and physics. And has been widely used in various light-emitting devices, laser and infrared detection devices, infrared windows and nonlinear optical materials, photosensitive sensors and photochemical catalytic materials and other fields. Therefore, the synthesis of new selenides has attracted great attention of scientists. [0003] Cobalt selenide has been extensively studied in the fields of solar cells, sensors, electrocatalysts, and ion batteries due to its diverse properties. Traditional methods for synthesizing cobalt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04B82Y30/00B82Y40/00
Inventor 李平刘志伟王伟韩坤锁国权何冬林曲选辉秦明礼
Owner UNIV OF SCI & TECH BEIJING
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