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Method for synthesizing red mercury sulfide by using mechanical ball milling method at low temperature

A red mercury sulfide, mechanical ball milling technology, applied in chemical instruments and methods, inorganic chemistry, mercury compounds, etc., can solve the problems of complex production process, environmental pollution, etc., and achieve simple process, low energy consumption, and easy industrial production. Effect

Active Publication Date: 2019-12-03
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, although mercury sulfide with specific properties can be prepared, the production process is relatively complicated and pollutes the environment when preparing materials.
Therefore, it is still challenging to develop green, simple and low-energy synthetic methods for mercury sulfide materials.

Method used

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  • Method for synthesizing red mercury sulfide by using mechanical ball milling method at low temperature

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Experimental program
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Effect test

Embodiment 1

[0019] Anhydrous mercuric chloride and lithium sulfide were mixed under vacuum at a molar ratio of 1:1, the mixture was placed in a ball mill jar, and ball milled at a ball-to-material ratio of 30:1 at a speed of 500 r / min for 24 hours. After ball milling, take out the solid product, filter and wash it with deionized water, and dry it in an oven at 80°C to obtain mercury sulfide. The XRD pattern is as follows: figure 1 shown.

Embodiment 2

[0021] Under a nitrogen protective atmosphere, anhydrous mercuric chloride and lithium sulfide were mixed at a molar ratio of 1:2, the mixture was placed in a ball mill jar, and ball milled at a ball-to-material ratio of 100:1 at a speed of 300 r / min for 100 h. After ball milling, take out the solid product, filter and wash it with deionized water, and dry it in an oven at 70°C to obtain mercury sulfide.

Embodiment 3

[0023] Under an argon protective atmosphere, anhydrous mercury chloride and lithium sulfide were mixed at a molar ratio of 1:3, the mixture was placed in a ball mill jar, and ball milled at a ball-to-material ratio of 70:1 at a speed of 400 r / min for 50 h. After ball milling, take out the solid product, filter and wash it with deionized water, and dry it in an oven at 80°C to obtain mercury sulfide.

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Abstract

The invention discloses a method for synthesizing red mercury sulfide by using a mechanical ball milling method at low temperature. The method comprises the steps: adopting mercury chloride as a mercury source and lithium sulfide as a sulfur source, performing a reaction on the mercury source and sulfur source through the mechanical ball milling method so as to generate mercury sulfide, performingwashing with deionized water or an organic solvent after completion of the reaction, and performing drying so as to obtain pure mercury sulfide. The method has a simple process, low energy consumption and easy industrial production.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and mainly relates to a method for synthesizing red mercury sulfide at low temperature by mechanical ball milling. Background technique [0002] As a basic environmental chemical process, the precipitation and dissolution of mercury sulfide plays a key role in the environmental form distribution, migration, reactivity and corresponding migration and transformation of mercury in environmental media, and is also a key process for controlling mercury toxicity. Therefore, studying the environmental behavior of mercury is an important way to solve mercury pollution. Due to the toxicity of mercury and some difficulties in preparation, there are relatively few studies on mercury-based chalcogenide semiconductor materials. At present, the methods for preparing mercury sulfide mainly include ultrasonic synthesis, template method and hydrothermal-solvothermal synthesis. But these methods a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G13/00
CPCC01G13/00Y02E60/10
Inventor 梁初潘良斌张佰伦张文魁甘永平夏阳张俊黄辉
Owner ZHEJIANG UNIV OF TECH
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