Nanometer spectral long-acting catalyst capable of highly-efficiently decomposing organic pollutants under dark light and light-free conditions

Abstract

The invention relates to a nanometer spectral long-acting catalyst capable of highly-efficiently decomposing organic pollutants under dark light and light-free conditions. The nanometer spectral long-acting catalyst is composed of, by weight, 100 parts of water and 3 to 20 parts of nanometer modified niobium oxide. The nanometer modified niobium oxide is prepared through the following steps: dissolving 3 to 10 parts by weight of niobium pentachloride in 100 parts by weight of absolute ethyl alcohol at room temperature so as to obtain an ethanol solution of niobium pentachloride, and carrying out standing for 5 to 30 min; adding 5 to 15 parts by weight of bismuth vanadate and 0.01 to 0.1 part by weight of blocked isocyanate into the ethanol solution of niobium pentachloride and carrying outuniform mixing so as to obtain a first mixed solution; dripping 100 parts by weight of an aqueous solution of ethanol into the first mixed solution at a speed of 3 to 10 ml / min while stirring the first mixed solution; adding N,N-dimethyl formamide, continuing stirring the first mixed solution for 30 min and carrying out standing at room temperature so as to obtain a second mixed solution; and carrying out soaking and drying, putting a dried substance into a muffle furnace and carrying out calcining at 400 to 500 DEG C so as to obtain the nanometer modified niobium oxide. The nanometer spectral long-acting catalyst has good catalysis effect under dark light and light-free conditions.

Description

technical field [0001] The present invention relates to a nano-spectrum long-acting medium that can efficiently decompose organic pollutants under dark light and no light conditions, and also relates to a preparation method of a nano-spectrum long-acting medium that can efficiently decompose organic pollutants under dark light and no light conditions, and also relates to The application of nano-spectral long-acting media that can efficiently decompose organic pollutants under dark and dark conditions in air purification. Background technique [0002] In recent years, with the improvement of people's living standards, people's requirements for interior decoration standards have become higher and higher, and home decoration has become increasingly modernized. However, the problem of indoor air chemical pollution caused by materials and decoration has followed. These chemicals have seriously affected the health of residents, and have attracted great attention from countries aro...

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Problems solved by technology

[0011] In principle, the sealing agent blocks the source of the release of volatile organic compounds, which should be able to completely eliminate the pollution pathways of volatile organic compounds. Avoid wear and tear, and after a period of time, the original sealant will lose its original effect

However, there is a problem of elimination effect in the methods of using elimination agent and capture agent. Although the pollution can be reduced to a certain extent, because the pollution of the indoor environment is affected by many factors such as pollution degree, temperature, and air circulation, the elimination reaction is often difficult. Thoroughly, it is difficult to achieve the desired effect of eliminating volatile organic compounds

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