Environmental-friendly diatom ooze and preparation method thereof

Abstract

The invention belongs to the field of decoration materials and in particular relates to environmental-friendly diatom ooze and a preparation method thereof. The diatom ooze consists of the following raw materials in parts by weight: 60-80 parts of modified refined kieselguhr, 10-20 parts of titanium dioxide gel, 6-8 parts of clay, 8-10 parts of attapulgite, 10-12 parts of kaolin and 20-30 parts ofwater. The preparation method of the environmental-friendly diatom ooze comprises the following steps: (1) loading nano titanium dioxide by gaps and surfaces of the modified refined kieselguhr; (2) uniformly mixing the modified refined kieselguhr, the clay, the attapulgite, the kaolin and the water; (3) loading the cerium oxide and the indium oxide by the gaps and the surfaces of the mixture. Theenvironmental-friendly diatom ooze provided by the invention has high light reflection efficiency because of micro pores inside, the lighting intensity in the micro pores is improved, the optical energy utilization rate of the nano titanium dioxide can be increased, a good catalysis effect can be achieved, a rapid formaldehyde decomposition speed is achieved, and the formaldehyde decomposition effect is slightly affected by lighting.

Description

technical field [0001] The invention belongs to the field of decorative materials, and in particular relates to an environment-friendly diatom mud and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, a large number of landscaping and decoration materials are used, resulting in the use of a large number of chemicals indoors, causing indoor air pollution. Common indoor pollutants include formaldehyde, benzene, ammonia and other volatile gas pollutants, biological pollutants, and particulate matter. In the product, it is a colorless, harmful gas with a strong pungent odor, easily soluble in water, alcohol and ether. The World Health Organization identifies formaldehyde as a carcinogenic and teratogenic substance, and its hazards to human health can be summarized as stimulation, toxicity and carcinogenicity. In this case, indoor air purification technology has received more and more attention. [0003] At present, i...

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Problems solved by technology

However, this kind of composite material loaded with photocatalysts such as titanium dioxide also has the following problems: (1) the diatom mud loaded with nano-titanium dioxide does not have a strong adsorption force on nano-titanium dioxide, resulting in the overflow of nano-titanium dioxide under certain conditions. It will directly enter the human blood through the lungs and cause harm to the human body; (2) The micropores of diatom mud are small and easy to block, and the adsorption capacity of formaldehyde and other pollutants is limited, and the adsorption efficiency is slow; (3) Diatom mud is opaque , leading to insufficient light inside the diatom mud, poor light energy utilization rate, poor photocatalytic efficiency, and slow decomposition rate of formaldehyde; (4) Nano-titanium dioxide has a narrow response range to the spectrum, so the decomposition of formaldehyde is greatly affected by light

[0005] For example, the Chinese invention patent with the publication number CN106609110A discloses a diatom mud coating that decomposes formaldehyde. Although the coating has a certain decomposition effect on formaldehyde, the adsorption effect on formaldehyde is poor, and the decomposition efficiency on formaldehyde is low. and is greatly affected by light

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