Nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and preparation method thereof

Abstract

The invention belongs to the field of a catalyst and particularly relates to a nitrogen organic modified titanium-containing blast furnace slag catalyst with visible light catalytic activity and a preparation method thereof. The preparation method comprises the steps of after crushing titanium-containing blast furnace slag, mixing the crushed titanium-containing blast furnace slag with industrial urea and milling; adding absolute ethyl alcohol into mixed powder to carry out ultrasonic dispersion; then agitating and drying and conducting ball milling; pressing the mixture into a sheet and roasting under an oxidization atmosphere; roasting and cooling; and milling the product to be the diameter of 0.5-50 microns to obtain the nitrogen organic modified titanium-containing blast furnace slag catalyst with the visible light catalytic activity. The nitrogen organic modified titanium-containing blast furnace slag catalyst has strong light absorption and light responses under the stimulation of visible light with the wavelength range of 400-700nm, so as to realize the full-amount absorption of the visible light, and the visible light catalytic activity of the nitrogen organic modified titanium-containing blast furnace slag catalyst is obviously improved.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a visible light catalytic active nitrogen organically modified titanium-containing blast furnace slag catalyst and a preparation method. Background technique [0002] The iron and steel industry is an industry with high energy consumption and high pollution. During the rapid development of the iron and steel industry, on the one hand, it will consume a lot of resources and energy, and on the other hand, it will inevitably produce a large amount of solid waste, which will seriously damage the ecological environment and affect our society. Establish a resource-saving and environment-friendly society. my country's Panxi region is rich in vanadium-titanium magnetite resources. After the vanadium-titanium iron concentrate is smelted in a blast furnace, vanadium-containing molten iron and titanium-containing blast furnace slag are obtained. Due to the TiO in the raw materials 2 Al...

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Problems solved by technology

The former mainly uses titanium-containing blast furnace slag as the raw material for extracting titanium. The disadvantage is that the separation rate is low, the cost is high, and it is easy to cause new pollution; the latter includes the overall use of building materials as raw materials and ecological utilization methods, and the waste of titanium as building materials raw materials resources, and the preparation of photocatalysts that are currently mainly concentrated in the ultraviolet region as ecological utilization, its application value is low

[0004] This is mainly because the energy of ultraviolet radiation in sunlight is low, accounting for only about 4% of the total solar radiation, and the photocatalyst obtained by the existing preparation method has a strong dependence on ultraviolet light. If the semiconductor light excited by ultraviolet light When catalysts are used to degrade inorganic pollutants and their complex systems, the investment in degradation equipment and the cost of degradation operations will be high

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