Molybdenum disulfide nanosphere/titanium dioxide composite material and preparation method thereof

A technology of titanium dioxide and molybdenum disulfide, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as environmental pollution, poor chemical stability, and high reactivity

Inactive Publication Date: 2011-02-23
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, it is mainly nano-molybdenum disulfide (molybdenum disulfide nanosheets) with a sheet structure that is composited with titanium dioxide. Due to the active layer edges of molybdenum disulfide in the molybdenum disulfide nanosheet / titanium dioxide composite material, the reactivity is high. Chemical Poor stability, may lead to self-decomposition in the process of pollutant treatment, bring new pollution problems to the environment, and also bring difficulties to the recovery and reuse of catalysts

Method used

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  • Molybdenum disulfide nanosphere/titanium dioxide composite material and preparation method thereof
  • Molybdenum disulfide nanosphere/titanium dioxide composite material and preparation method thereof

Examples

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Embodiment 1

[0010] Take 1 part of titanium dioxide, 100 parts of sodium molybdate and 100 parts of thioacetamide, and add 2000 parts of distilled water. When the above system was heated and stirred to 60°C, the pH value was adjusted to 0.5 with hydrochloric acid, stirred for 9 minutes, filtered, washed and dried, and the solid product was calcined in hydrogen at 400°C for 50 minutes, cooled to room temperature, and the sample was obtained. Molybdenum disulfide nanospheres / titanium dioxide composites.

Embodiment 2

[0012] Take 10 parts of titanium dioxide, 1 part of ammonium molybdate and 20 parts of thioacetamide, and add 1000 parts of distilled water. When heating and stirring the above system to 100°C, adjust the pH value to 1 with phosphoric acid, stir and react for 20 minutes, filter, wash and dry the solid product in N 2 Calcined at 800°C for 60 minutes, cooled to room temperature, and took out the sample to obtain the molybdenum disulfide nanosphere / titanium dioxide composite material.

Embodiment 3

[0014] Take 100 parts of titanium dioxide, 1 part of potassium molybdate and 1 part of thioacetamide, and add 200 parts of distilled water. When the above system is heated and stirred to 100°C, adjust the pH to 0.5 with sulfuric acid, stir and react for 20 minutes, filter, wash and dry, calcinate the solid product in argon at 1000°C for 60 minutes, cool to room temperature, take out the sample, and obtain Molybdenum disulfide nanospheres / titanium dioxide composites.

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Abstract

The invention provides a molybdenum disulfide nanosphere/titanium dioxide composite material and a preparation method thereof. The composite material is characterized in that: titanium dioxide, molybdate and thioacetamide are taken as raw materials, the surface of the titanium dioxide is activated by strongly acidic solution, and the thioacetamide is reacted with the molybdate on the surface of the titanium dioxide; and the titanium dioxide promotes the reaction product to grow in a regular sphere shape, and the reaction product is calcined in vacuum or protective gas and is converted into the molybdenum disulfide nanosphere/titanium dioxide composite material. The preparation technology is simple, the reaction conditions are easy to control, the molybdenum disulfide nanospheres have a regular shape and are uniformly dispersed in the titanium dioxide, and the composite material can be used as a high-performance lubricant and catalyst.

Description

1. Technical field [0001] The invention relates to a molybdenum disulfide nanosphere / titanium dioxide composite material and a preparation method thereof. 2. Background technology [0002] Titanium dioxide has excellent photocatalytic properties and has unique advantages in the removal of environmental pollutants and photodegradation of water to produce hydrogen. However, the spectral absorption of titanium dioxide falls in the ultraviolet region, and only about 3% of the ultraviolet light in sunlight can be used, which limits the application range of titanium dioxide; in addition, titanium dioxide also has certain lubricating properties and can be used as a lubricating oil additive and polymerization Modifiers for substances. Molybdenum disulfide has excellent lubricating and catalytic properties, and has attracted much attention. In terms of catalytic performance, molybdenum disulfide is a hydrodesulfurization and denitrogenation catalyst in the petroleum refining proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M177/00C10M125/22B01J27/051C10M125/00
Inventor 胡坤宏蔡永愧
Owner HEFEI UNIV
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