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Preparation method of molybdenum disulfide supported molybdenum cobalt oxide catalyst

A technology of molybdenum disulfide and oxides, which is applied in the field of preparation of molybdenum disulfide-supported molybdenum-cobalt oxide catalysts, can solve problems such as limited action capacity, and achieve the effect of increasing the degradation rate

Inactive Publication Date: 2017-12-15
柳州若思纳米材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a photocatalyst, its ability to act is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 15 g of ammonium molybdate to 100 mL of thioacetamide ethanol solution with a concentration of 5 mg / L, stir in a water bath at 70°C for 30 minutes, add 5 g of cobalt dichloride, add an appropriate amount of NaOH solution until the pH is 11, and precipitate complete, placed in a hydrothermal reactor, reacted for 10 h at 200 °C, filtered to obtain a solid, washed to neutral, dried at 80 °C, and calcined at 650 °C for 2 h to obtain a molybdenum disulfide supported molybdenum cobalt oxide catalyst.

[0011] 0.5 g molybdenum disulfide-supported molybdenum cobalt oxide catalyst was added to 200 mL of methylene blue wastewater with a concentration of 45 mg / L, and reacted for 100 min under the irradiation of a 120 W LED lamp. The decolorization rate was 97.3%. The catalyst was separated and reused for 5 After three times, under the same conditions, the reaction time was 100 min, and the decolorization rate was 92.8%.

Embodiment 2

[0013] Add 10 g of ammonium molybdate to 50 mL of thioacetamide ethanol solution with a concentration of 1 mg / L, stir in a water bath at 60°C for 5 minutes, add an appropriate amount of NaOH solution to pH 10 for 2 g of cobalt dichloride, and precipitate complete, placed in a hydrothermal reactor, reacted for 5 h at 180 °C, filtered to obtain a solid, washed to neutral, dried at 80 °C, and calcined at 500 °C for 2 h to obtain a molybdenum disulfide supported molybdenum cobalt oxide catalyst.

[0014] 0.5 g molybdenum disulfide-supported molybdenum cobalt oxide catalyst was added to 300 mL of acid scarlet wastewater with a concentration of 45 mg / L, and reacted for 100 min under the irradiation of a 120 W LED lamp, the decolorization rate was 96.3%, and the catalyst was separated and reused After 5 times, under the same conditions, the reaction time was 100 min, and the decolorization rate was 92.1%.

Embodiment 3

[0016] Add 12 g of ammonium molybdate to 80 mL of thioacetamide ethanol solution with a concentration of 2 mg / L, stir in a water bath at 70°C for 25 minutes, add an appropriate amount of NaOH solution to a pH of 11 for 3 g of cobalt dichloride, and precipitate complete, placed in a hydrothermal reactor, reacted for 10 h at 180 °C, filtered to obtain a solid, washed to neutral, dried at 80 °C, and calcined at 650 °C for 2 h to obtain a molybdenum disulfide supported molybdenum cobalt oxide catalyst.

[0017] 0.5 molybdenum disulfide-supported molybdenum cobalt oxide catalyst was added to 300 mL of rhodamine B wastewater with a concentration of 45 mg / L, and reacted for 100 min under the irradiation of a 120 W LED lamp. The decolorization rate was 96.6%. The catalyst was separated and reused. After 5 times, under the same conditions, the reaction time was 100 min, and the decolorization rate was 91.2%.

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Abstract

The invention discloses a preparation method of a molybdenum disulfide supported molybdenum cobalt oxide catalyst. The preparation method comprises the following steps: adding 10-15g of ammonium molybdate into 50-100mL of thioacetamide ethanol solution with the concentration of 1-5mg / L, stirring for 5-30 minutes in water bath at the temperature of 60-70 DEG C, adding 2-5g of cobalt dichloride into a proper amount of NaOH solution until the pH is 10-11, completely precipitating, putting in a hydrothermal reactor, reacting for 5-10 hours at the temperature of 180-200 DEG C, filtering to obtain solids, washing till the solids are neutral, drying at the temperature of 80 DEG C, and roasting for 2 hours at the temperature of 500-650 DEG C, so that the molybdenum disulfide supported molybdenum cobalt oxide catalyst is obtained. The preparation method disclosed by the invention has the advantages that firstly, molybdenum disulfide and molybdenum cobalt oxide are mutually compounded to form a compound with heterojunction structure; and secondly, the supported molybdenum dioxide can help the molybdenum cobalt oxide to be dispersed, and the molybdenum dioxide and the molybdenum cobalt oxide mutually promote, so that the pollutant degradation speed is improved.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a method for preparing a molybdenum disulfide supported molybdenum cobalt oxide catalyst. Background technique [0002] With the development of science and technology, toxic organic pollutants from industrial and agricultural production seriously threaten the environment and human health. It is of great significance to seek a new and efficient environmental governance technology. Photocatalytic technology has become an emerging environmental treatment technology with important application prospects due to its advantages of energy saving, high efficiency, complete pollutant degradation, and no secondary pollution. In recent years, the development of new and efficient visible light photocatalysts has become an important research content in photocatalytic technology. Among them, photocatalytic materials with surface plasmon resonance effect, because o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/10B01J37/08C02F1/30C02F101/38
CPCC02F1/30B01J23/002B01J27/051B01J37/082B01J37/10C02F2101/308C02F2305/10B01J35/39
Inventor 程昊白大伟郝光明史智鹏
Owner 柳州若思纳米材料科技有限公司
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