Preparation method of ferrimanganic composite oxides with three-phase catalytic function

Abstract

The invention discloses a preparation method of ferrimanganic composite oxides with a three-phase catalytic function. The method sequentially comprises the following steps that under the water bath stirring condition, a sodium carbonate solution is dropwise added into a mixed solution of ferric chloride and manganese chloride; after the dropwise addition is completed, the product is continuously aged for 24 to 36h in a water bath; a polyhydroxy ferrimanganic solution is obtained through preparation; sodium dodecyl benzene sulfonate solids are added into the prepared polyhydroxy ferrimanganic solution; stirring is performed for 2 to 3h; precipitation and separation are performed; the solids are washed by distilled water for 2 to 3 times; drying is performed at 105 DEG C; a dodecyl sulfonatecombined ferrimanganic solid is obtained and is then put into a muffle furnace; under the nitrogen gas protection, calcination is performed for 2 to 5h at 350 to 550 DEG C; nitrogen gas is switched into air; the introduced air quantity is controlled to be 30 to 50mL / g of dodecyl sulfonate combined ferrimanganic solid; then, nitrogen gas is continuously introduced; the nitrogen gas introduction stops until the cooling is performed to room temperature; the ferrimanganic composite oxides with the three-phase catalytic function is obtained; the catalytic effect is obviously enhanced.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a method for preparing an iron-manganese composite oxide with three-phase catalytic function. 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. [0003] Semiconductor photocatalysis can degrade a variety of organic pollutant...

AI Technical Summary

Problems solved by technology

However, the solubility of oxygen in water, especially in sewage is very low, and the transmission speed is very slow, which severely limits the capture of electrons, which also greatly limits the efficiency of photocatalytic reactions.