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Metal-organic framework compound derived metal sulfide nanosheet and preparation method thereof

A metal-organic framework, metal sulfide technology, applied in the direction of cobalt compounds, nickel sulfide, inorganic chemistry, etc., can solve the problems of low-cost, large-scale, controllable preparation, etc., to achieve a wide range of options, good application prospects, reaction Highly active effect

Active Publication Date: 2019-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that transition metal sulfide nanosheets are difficult to be prepared in a low-cost, macro-quantity, and controllable manner, the object of the present invention is to provide a metal-organic framework compound-derived metal sulfide nanosheet and a preparation method thereof

Method used

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  • Metal-organic framework compound derived metal sulfide nanosheet and preparation method thereof
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  • Metal-organic framework compound derived metal sulfide nanosheet and preparation method thereof

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Embodiment 1

[0031] Will contain 0.58g Co(NO 3 ) 2 ·6H 2 A 40 mL solution of O was poured into a 40 mL solution containing 1.31 g of 2-methylimidazole, then magnetically stirred for 1 h, centrifuged at 6500 rpm for 5 min, and washed 4 times with water, then the sediment was redispersed in 140 mL of deionized water, and poured into 40 mL of sulfur Acetamide (1.2g) aqueous solution was stirred at 100°C for 2h, centrifuged at 9000rpm for 5min, washed 4 times with water, redispersed in 200mL of water, and freeze-dried to obtain wrinkled cobalt sulfide (CoS 2 ) nanosheets, such as figure 1 shown.

Embodiment 2

[0033] Will contain 0.29g Co(NO 3 ) 2 ·6H 2 40 mL solution of O was poured into 40 mL solution containing 0.655 g 2-methylimidazole, then magnetically stirred for 4 h, centrifuged at 6500 rpm for 5 min, and washed 4 times with water, then the sediment was redispersed in 140 mL deionized water, and poured into 40 mL sulfur Acetamide (1g) aqueous solution was stirred at 85°C for 2h, centrifuged at 6500rpm for 5min, washed 4 times with water, redispersed in a certain amount of deionized water, freeze-dried to obtain wrinkled sulfide nanosheets, under nitrogen protection, The obtained sulfide nanosheets were heat-treated at 450 °C for 2 h to obtain porous cobalt sulfide (Co 3 S 4 ) nanosheets, such as figure 2 shown.

Embodiment 3

[0035] Will contain 0.29g Zn(NO 3 ) 2 ·6H 2 O and 0.29g Co(NO 3 ) 2 ·6H 2 40mL solution of O was poured into 40mL solution containing 1.31g 2-methylimidazole, then magnetically stirred for 24h, centrifuged at 6500rpm for 5min, and washed 4 times with water, then the sediment was redispersed in 140mL deionized water, and poured into 40mL sulfur Acetamide (1.2g) aqueous solution was stirred at 50°C for 5h, centrifuged at 6500rpm for 5min, washed 4 times with water, redispersed in a certain amount of deionized water, and freeze-dried to obtain zinc-cobalt bimetallic sulfide (ZnCoS 2 ) nanosheets, such as image 3 shown.

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Abstract

The invention discloses a metal-organic framework compound derived metal sulfide nanosheet and a preparation method thereof. The derived metal sulfide has a pleated nanosheet or porous nanosheet structure, and the chemical composition can abbreviated as MSx, wherein M represents one or more of Co, Zn Ni, Fe, Cu, Mn and common transition metal elements, S represents the sulfur element, and x is ina range of 0.5-2. The preparation method comprises the following steps: reacting a metal salt with an organic ligand to obtain a two-dimensional metal organic framework, and then carrying out low-temperature liquid phase sulfuration treatment on the metal organic framework to obtain metal sulfide nanosheets having different two-dimensional structures and compositions. Different sulfide nanosheetscan be prepared through adopting the two-dimensional metal organic framework as a precursor and selecting different sulfurizing reagents and solvents for effective control by the method. The method issimple, and easy to implement, and can be used to prepare nanostructures which are difficult to realize by other methods, and the metal-organic framework compound derived metal sulfide nanosheet hasgreat application prospects in the fields of electrochemical energy storage, catalysis and adsorption.

Description

technical field [0001] The invention belongs to the field of nano energy materials, and in particular relates to a metal sulfide nano sheet derived from a metal organic framework compound and its preparation. Background technique [0002] Transition metal sulfides have better electrical conductivity than corresponding metal oxides, and have a wide range of applications in the fields of catalysis, energy storage and conversion. Two-dimensional materials represented by graphene have high aspect ratio and high specific surface area, and often show better application performance than granular materials. Generally, transition metal sulfide nanosheets are prepared by sulfiding the corresponding transition metal oxide or hydroxide. However, the controllable macrofabrication of transition metal sulfide nanosheets is a great challenge. [0003] Metal-organic frameworks (MOFs) take metal as the core and organic matter as the bridge, and coordinate and couple with each other to form ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/12C01G51/00C01G53/11B82Y40/00
Inventor 吴忠帅董琰峰包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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