Immobilized chlorine dioxide sustained-release gel

Abstract

The invention discloses an immobilized chlorine dioxide sustained-release gel material and a preparation method thereof. The immobilized chlorine dioxide sustained-release gel is prepared from a chlorine dioxide precursor, a carrier, an activating agent, a stabilizing agent, essence, gel, water and other raw materials. In order to better control the chlorine dioxide release rate, the preparation scheme provided by the invention is characterized in that the activating agent is immobilized in pore channels of a porous carrier; the carrier is dispersed into the gel; by adopting the scheme of theinvention, on one hand, the reaction rate of the chlorine dioxide precursor and the immobilized activating agent is controlled, and on the other hand, the generated chlorine dioxide gas can be released into the environment only by overcoming the diffusion resistance of the pore channels in the carrier and the diffusion resistance of the gel outside the pore channels, so that the generation rate ofchlorine dioxide and the release rate after the chlorine dioxide is generated can be effectively adjusted. The immobilized chlorine dioxide gel material disclosed by the invention is stable in storage, the chlorine dioxide gas is not leaked, the phenomenon that chlorine dioxide is sharply released at the initial stage of gel formation in the prior art can be overcome in the using process, the chlorine dioxide gas can be released stably for a long time, and the effects of removing peculiar smells, sterilizing, disinfecting and removing volatile organic matter such as formaldehyde in the indoorenvironment can be achieved.

Description

technical field [0001] The invention relates to the technology for preparing chlorine dioxide products in the field of environmental protection, in particular to an immobilized chlorine dioxide slow-release gel and a preparation method thereof. Background technique [0002] Chlorine dioxide has strong oxidizing properties and is widely used in the field of environmental protection technology. At present, volatile organic compounds such as formaldehyde and toluene released by decoration materials have become the main pollutants in the indoor environment. People who stay in the environment where these pollutants exceed the standard for a long time will seriously endanger their health. Organic substances such as formaldehyde and toluene are oxidized into non-toxic and harmless carbon dioxide and water, thereby removing these pollutants. [0003] The strong oxidizing property of chlorine dioxide is also often used as a bactericidal disinfectant. Low concentration of chlorine di...

AI Technical Summary

Problems solved by technology

In order to expand its scope of application, some chlorine dioxide slow-release products have also appeared on the market, as the patent CN1175350A reports that the chlorine dioxide solution is adsorbed on the carrier to make tablets or powders, and acidification is added to release chlorine dioxide during use; CN104707463A reports that the reaction of sodium chlorite with citric acid, oxalic acid, etc. is used to prepare chlorine dioxide slow-release gel. There are still some problems in chlorine dioxide release products. For example, when the product is stored, some chlorine dioxide will slowly leak, which will affect the safety and shelf life of the product. When the product is mixed with water to form a gel, there will be a burst of chlorine dioxide released rapidly. Phenomenon, which produces a choking odor and affects health and safety

In addition, the production rate of chlorine dioxide is unstable and there are large differences in the service life of the product, which will cause the concentration of chlorine dioxide in the treatment environment to be difficult to control, the effective period of the product is short, and the effect needs to be further improved