Preparing method of molybdenum sulfide compound and application of molybdenum sulfide compound in detecting hexavalent chromium in water

A molybdenum sulfide and compound technology is applied in the field of environmental detection to achieve the effects of high sensitivity, low cost and improved catalytic performance
CN105259243AActive Publication Date: 2016-01-20YANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YANGZHOU UNIV
Publication Date
2016-01-20

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Abstract

The invention relates to a preparing method of a molybdenum sulfide compound and application of the molybdenum sulfide compound in detecting hexavalent chromium in water, and belongs to the technical field of detection of water environments. In the nitrogen atmosphere, ferric chloride hexahydrate and iron dichloride tetrahydrate are dissolved in deionized water and heated with the temperature maintained for 5-10 minutes, then ammonium hydroxide is used for adjusting the pH of the mixed system to 7.5-8.5, then aging and magnetic separation are carried out, and the solid phase is taken and washed with deionized water, dried and ground to obtain ferroferric oxide powder; deionized water containing the ferroferric oxide powder is mixed with a dihydrated molybdenum sulfate and thiourea solution for a reaction; reaction products are taken, washed with ethyl alcohol and deionized water and then dried, and the molybdenum sulfide compound carried by ferromagnetic ferroferric oxide particles is obtained. A detection method is low in cost, simple, reliable and high in sensitivity, and the specific content of hexavalent chromium with the hexavalent chromium ion concentration within the range of 0.5-328 micro mol.dm-3 can be accurately detected.
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Description

technical field

[0001] The invention belongs to the technical field of environmental detection, in particular to the detection technology of hexavalent chromium in water. Background technique

[0002] The rapid development of metallurgy and mining has resulted in more and more wastewater containing hexavalent chromium being discharged into the environment, which poses a serious threat to the environment. Chromium-containing wastewater is difficult to be biodegraded after being discharged into water bodies, and will be transferred to aquatic animals, plants and humans through the food chain, which is potentially harmful to organisms and even carcinogenic. Therefore, the real-time detection of hexavalent chromium is particularly important.

[0003] Commonly used detection methods for water micropollutants include: electrochemical method, gas chromatography, liquid chromatography, etc. Electrocatalytic methods have attracted much attention due to their simple operation and hi...

Claims

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