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Simple synthetic method for Ag2S-MoS2 sheet self-assembling composite spherical power

A synthesis method and spherical powder technology, which is applied in the field of photocatalytic material preparation, can solve the problem of few spherical powders assembled in sheet form, and achieve the effects of easy control of product composition, less environmental pollution, and less by-products

Active Publication Date: 2017-12-22
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the current one-pot synthesis of Ag 2 S-MoS 2 There are few reports on flake-assembled composite spherical powders

Method used

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  • Simple synthetic method for Ag2S-MoS2 sheet self-assembling composite spherical power
  • Simple synthetic method for Ag2S-MoS2 sheet self-assembling composite spherical power
  • Simple synthetic method for Ag2S-MoS2 sheet self-assembling composite spherical power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Weigh 1.8538g of ammonium molybdate tetrahydrate, 0.4567g of thiourea, 1.1260g of glycine, 0.0255g of silver nitrate and 0.0263g of ammonium metavanadate into a beaker, and add 15mL of deionized water to dissolve. Then placed on a magnetic stirrer and stirred for 30 min.

[0021] (2) Transfer the stirred mixture into the 25mL reaction kettle washed in advance, then rinse the beaker with 5mL deionized water and pour it into the reaction kettle; cover the reaction kettle and put it in a constant temperature blast oven, set the temperature to 180°C, react for 10 hours; after the reaction is over, take out the reaction kettle, centrifuge the powder generated after the reaction, and wash it alternately with absolute ethanol and deionized water for several times, and put the washed powder in a constant temperature drying box , set the temperature at 30°C, and dry for 5 hours to obtain a dry black powder.

[0022] figure 1 It is the Ag prepared in Example 1 2 S-MoS 2 F...

Embodiment 2

[0026] (1) Weigh 0.9269g ammonium molybdate tetrahydrate, 0.5709g thiourea, 0.1996g L-aspartic acid, 0.1911g silver nitrate and 0.0175g ammonium metavanadate into a beaker, add 15mL deionized water to dissolve . Then placed on a magnetic stirrer and stirred for 30 min.

[0027] (2) Transfer the stirred mixture into the 25mL reaction kettle washed in advance, then rinse the beaker with 5mL deionized water and pour it into the reaction kettle; cover the reaction kettle and put it in a constant temperature blast oven, set the temperature to 160°C, react for 24 hours; after the reaction is over, take out the reaction kettle, centrifuge the powder generated after the reaction, and wash it alternately with absolute ethanol and deionized water for several times, and put the washed powder in a constant temperature drying box , set the temperature at 40°C, and dry for 10 hours to obtain a dry black powder.

[0028] Figure 5 It is the Ag prepared in Example 2 2 S-MoS 2 Field emiss...

Embodiment 3

[0030] (1) Weigh 2.7807g of ammonium molybdate tetrahydrate, 2.7403g of thiourea, 2.5336g of glycine, 0.0764g of silver nitrate and 0.0263g of ammonium metavanadate into a beaker, and add 15mL of deionized water to dissolve. Then placed on a magnetic stirrer and stirred for 30 min.

[0031] (2) Transfer the stirred mixture into the 25mL reaction kettle washed in advance, then rinse the beaker with 5mL deionized water and pour it into the reaction kettle; cover the reaction kettle and put it in a constant temperature blast oven, set the temperature to 140°C, react for 36 hours; after the reaction is over, take out the reaction kettle, centrifuge the powder generated after the reaction, and wash alternately with absolute ethanol and deionized water several times respectively, and put the washed powder in a constant temperature drying box , set the temperature at 60°C, and dry for 3 hours to obtain a dry black powder.

[0032] Image 6 It is the Ag prepared in Example 3 2 S-Mo...

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Abstract

The invention provides a simple synthetic method for Ag2S-MoS2 sheet self-assembling composite spherical power and relates to the technical field of photocatalytic material preparation. The method comprises the following steps: dissolving amino acid, ammonium molybdate tetrahydrate, thiourea, silver nitrate and ammonium metavanadate in water and uniformly stirring and mixing; transferring the stirred mixed solution into a reaction kettle; covering the reaction kettle and placing into a constant-temperature airing oven for reacting; treating after ending the reaction, thereby acquiring black Ag2S-MoS2 sheet self-assembling composite spherical power. According to the invention, an amino acid auxiliary hydrothermal method is adopted for successfully acquiring the Ag2S-MoS2 sheet self-assembling composite spherical power; a series of experimental results prove that different amino acids as the templates and raw materials can be used for successfully preparing the Ag2S-MoS2 sheet self-assembling composite spherical power; the Ag2S-MoS2 sheet self-assembling composite spherical power has the characteristics of narrow size distribution, uniform morphological distribution, controllable grain size, and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of photocatalytic materials, in particular to an Ag 2 S-MoS 2 A facile synthesis method for sheet-like self-assembled composite spherical powders. Background technique [0002] MoS 2 It is mainly used for photocatalytic hydrogen production and photocatalytic degradation. The main purpose of photocatalytic degradation is to reduce the environmental problems caused by water pollution, and photocatalytic hydrogen production can alleviate the energy crisis caused by the decreasing fossil fuels, and can significantly improve environmental pollution. MoS 2 It is a conductor material with a narrow band system, and has a high response in the visible light band, and is a catalyst with a very broad application prospect. Hu et al. studied nanoscale and microscale MoS with different morphologies 2 Particles react to SO under visible light 4 2- The degradation rate, with time, of MoS 2 The catalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06C01G5/00B01J27/051
CPCB01J27/051C01G5/00C01G39/06C01P2004/32C01P2004/51C01P2004/82
Inventor 谢劲松吴文静李宏基吴传洋李明华
Owner HEFEI UNIV
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