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Cobalt-nickel bimetallic hydroxyl phosphite rod-like crystal array film and preparation method thereof

A metal hydroxy phosphite, crystal array technology, applied in chemical instruments and methods, physical/chemical process catalysts, optical components, etc., can solve problems such as no reports of double transition metal hydroxy phosphite rod-shaped crystal array thin film materials. , to achieve the effect of strengthening the anisotropic growth trend and low energy consumption

Active Publication Date: 2019-11-22
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the literature reported M 11 (HPO 3 ) 8 (OH) 6 (M=Zn, Ni or Co) are all powder materials, and most of them are single-metal hydroxyphosphite, and there is no report on double-transition metal hydroxyphosphite rod-shaped crystal array film materials

Method used

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  • Cobalt-nickel bimetallic hydroxyl phosphite rod-like crystal array film and preparation method thereof
  • Cobalt-nickel bimetallic hydroxyl phosphite rod-like crystal array film and preparation method thereof
  • Cobalt-nickel bimetallic hydroxyl phosphite rod-like crystal array film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023]Dissolve 0.2908 g nickel nitrate hexahydrate, 0.2910 g cobalt nitrate hexahydrate and 0.2120 g sodium hypophosphite in 10 ml deionized water, stir evenly, wherein the molar concentration ratio of nickel nitrate hexahydrate, cobalt nitrate hexahydrate, and sodium hypophosphite is 1:1:2, the total molar concentration of nickel ions and cobalt ions is 0.20 mol / L. 10 ml of N,N-dimethylacetamide was added to the mixed solution, and a homogeneous solution was obtained after magnetic stirring. Activated carbon fibers were obtained by heat-treating natural cotton fibers at 1000 °C for 1 h in a nitrogen atmosphere. Submerge the pre-cleaned activated carbon fibers in the above solution for 5 hours. The mixed solution, together with activated carbon fibers, was reacted at 160 °C for 10 h. After the reaction, the reaction kettle was naturally cooled to normal temperature, and the activated carbon fiber was taken out, washed repeatedly with absolute ethanol and deionized water thre...

Embodiment 2

[0026] Dissolve 0.2908 g nickel nitrate hexahydrate, 0.2910 g cobalt nitrate hexahydrate and 0.2120 g sodium hypophosphite in 20 ml deionized water, stir evenly, wherein the molar concentration ratio of nickel nitrate hexahydrate, cobalt nitrate hexahydrate, and sodium hypophosphite is 1:1:2, the total molar concentration of nickel ions and cobalt ions is 0.10 mol / L. 20 ml of N,N-dimethylacetamide was added to the mixed solution, and a homogeneous solution was obtained after magnetic stirring. Activated carbon fibers were obtained by heat-treating natural cotton fibers at 1000 °C for 1 h in a nitrogen atmosphere. Submerge the pre-cleaned activated carbon fibers in the above solution for 5 hours. The mixed solution, together with activated carbon fibers, was reacted at 140 °C for 20 h. After the reaction, the reaction kettle was naturally cooled to normal temperature, and the activated carbon fiber was taken out, washed repeatedly with absolute ethanol and deionized water thr...

Embodiment 3

[0029] Dissolve 0.5816 g nickel nitrate hexahydrate, 0.5820 g cobalt nitrate hexahydrate and 0.4140 g sodium hypophosphite in 30 ml deionized water, stir evenly, wherein the molar concentration ratio of nickel nitrate hexahydrate, cobalt nitrate hexahydrate, and sodium hypophosphite is 1:1:2, the total molar concentration of nickel ions and cobalt ions is 0.13 mol / L. 30 ml of N,N-dimethylacetamide was added to the mixed solution, and a homogeneous solution was obtained after magnetic stirring. Activated carbon fibers were obtained by heat-treating natural cotton fibers at 1000 °C for 1 h in a nitrogen atmosphere. Submerge the pre-cleaned activated carbon fibers in the above solution for 5 hours. The mixed solution, together with activated carbon fibers, was reacted at 150 °C for 12 h. After the reaction, the reaction kettle was naturally cooled to normal temperature, and the activated carbon fiber was taken out, washed repeatedly with absolute ethanol and deionized water thr...

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Abstract

The invention discloses a cobalt-nickel bi-metal hydroxyl phosphite rod-like crystal array film and a preparation method of the cobalt-nickel bi-metal hydroxyl phosphite rod-like crystal array film. The preparation method comprises the following steps: dissolving nickel nitrate hexahydrate, cobalt nitrate hexahydrate and sodium hypophosphite in deionized water, and adding N, N-dimethylacetamide; soaking the pre-cleaned activated carbon fibers into the prepared solution, and carrying out sealed reaction in a reaction kettle at 140-160 DEG C for 10-20 hours; and after the reaction kettle is naturally cooled to normal temperature, taking out the activated carbon fiber, repeatedly cleaning with absolute ethyl alcohol and deionized water, and drying at 60 DEG C for 8 hours to obtain a compact and uniform M11 (HPO3) 8 (OH) 6 (M = Ni + Co) rod-like crystal array film on the surface of the activated carbon fiber. The rod-like crystal array film obtained by the invention is simple and safe in preparation method, and the array crystal is uniform and compact, has stable and uniform surface performance, and can be applied to the fields of novel energy storage, catalysis and sensing.

Description

technical field [0001] The invention relates to a crystal array film based on a porous fiber material and a preparation method thereof, in particular to a cobalt-nickel double metal hydroxy phosphite rod crystal array film based on activated carbon fibers and a preparation method thereof. Background technique [0002] Transition metal hydroxyphosphite M 11 (HPO 3 ) 8 (OH) 6 (M = Zn, Ni, or Co) is a novel inorganic material with broad potential applications in adsorption, catalysis, and energy storage due to its diverse stoichiometric relationships and rich structural chemistry [M. D. Marcos et al, J. Solid State Chem., 107(1993), 250–257; M. D. Marcos et al, Chem. Mater., 5(1993), 121–128.]. It is well known that the properties of materials depend largely on their size and shape. Studies have found that transition metal hydroxyphosphites with ordered structures exhibit more excellent electrical and optical properties. Notably, transition metal hydroxyphosphites have be...

Claims

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Application Information

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IPC IPC(8): B81B7/04B01J27/185B01J35/06
CPCB81B7/04B01J27/1853B01J35/59B01J35/39Y02E60/13
Inventor 杨天鹏金达莱
Owner ZHEJIANG SCI-TECH UNIV
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