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Synthetic method of transition metal sulfide

A transition metal and synthesis method technology, applied in the field of direct preparation of transition metal sulfides, can solve the problems of environmental pollution by waste discharge, high reaction cost, difficulty in large-scale industrial production, etc., achieve environmental friendliness, simple synthesis process, and low equipment requirements Effect

Inactive Publication Date: 2013-05-01
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the problems of prior art discharge waste polluting the environment, high reaction cost, difficulty in large-scale industrial production, etc., and provide a synthesis method of transition metal sulfides

Method used

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  • Synthetic method of transition metal sulfide
  • Synthetic method of transition metal sulfide
  • Synthetic method of transition metal sulfide

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Mix 0.30g of cobalt nitrate hexahydrate with 0.42g of thiourea (cobalt, sulfur molar ratio 1:5), put it into a reaction vessel, react at 180°C for 4 hours, take it out and cool to room temperature, wash and filter. A black cobalt disulfide powder is obtained. Its X-ray diffraction pattern (XRD) is as figure 1 As shown in (a), its scanning electron microscope (SEM) is as follows figure 2 shown.

Embodiment 2

[0026] Mix 0.30g of cobalt nitrate hexahydrate with 0.42g of thiourea (cobalt, sulfur molar ratio 1:5), put it into a reaction vessel, react at 180°C for 12 hours, take it out and cool to room temperature, wash and filter. A black cobalt disulfide powder is obtained. Its X-ray diffraction pattern (XRD) is as figure 1 (b) shown.

Embodiment 3

[0028] Mix 0.30g of cobalt nitrate hexahydrate with 0.42g of thiourea (cobalt, sulfur molar ratio 1:5), put it into a reaction vessel, react at 180°C for 24 hours, take it out and cool to room temperature, wash and filter. A black cobalt disulfide powder is obtained. Its X-ray diffraction pattern (XRD) is as figure 1 (c) shown.

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Abstract

The invention relates to a synthetic method of transition metal sulfide, and belongs to the technical field of inorganic synthetic methods. The method comprises the steps that nitrate of transition metal (cobalt, nickel or cadmium) and excessive thiourea are mixed, react for 4-24h at 180-240 DEG C, and are cooled to a room temperature, washed and filtered, and sulfide of the transition metal (the cobalt, nickel or cadmium) is obtained. In a reaction system of the synthetic method, thiourea serves as a reactant and a fluxing agent, so that the problems that other substances are required to be added as a fluxing agent in the traditional fluxing agent method, foreign ions are introduced to cause pollution to a synthetic crystal, and transition metal sulfide cannot be synthesized by the traditional fluxing agent method are overcome; transition metal sulfide can be synthesized under a low-temperature fuse salt condition; adopted raw materials are cheap and easy to obtain; and the synthetic method is simple in synthetic technology, short in reaction period, small in energy consumption, environment-friendly, and low in equipment requirement, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of inorganic synthesis methods, and specifically relates to a method for directly preparing transition metal sulfides by using transition metal cobalt, nickel or cadmium nitrate and thiourea as raw materials. Background technique [0002] The special structure and composition of transition metal sulfides make them have unique optical, electrical, magnetic, tribological and catalytic properties, and are widely used in solar converters, solid-state lithium-ion battery electrode materials, magnetic materials, capacitor materials, catalysts and solid lubrication agent. Due to its size effect, the nano-cobalt sulfide powder widens the energy gap and shifts the absorption and emission spectra to the short-wave direction, which has an important impact on optical, electrical and nonlinear optical properties. [0003] At present, there are many synthesis methods for transition metal sulfide nanomaterials. The tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00C01G53/11C01G11/02
Inventor 王晓峰纪莹李本仙刘晓旸
Owner JILIN UNIV
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