Efficient formaldehyde Scavenger

Common formaldehyde removal methods on the market have their own limitations: natural ventilation only dilutes and replaces air, and cannot cure formaldehyde, because its release cycle is as long as 3-15 years, and residual formaldehyde will continue to be released; plant absorption method relies on photosynthesis, which absorbs low-concentration formaldehyde slowly, and is helpless against high-concentration formaldehyde; although activated carbon adsorption method is cheap and practical, the adsorption sites are limited and easy to saturate, and after saturation, it will be released in the opposite direction to cause secondary pollution, and it is difficult to judge the replacement time; chemical reaction method (such as formaldehyde capture agent, scavenger) has a fast formaldehyde removal effect but can only be used once, and the cost is relatively high; traditional photocatalytic degradation (photocatalyst) relies on ultraviolet light, and the effect is greatly reduced under natural light.

(I) Natural ventilation method

The principle is to exhaust indoor air through natural wind or mechanical ventilation to reduce formaldehyde concentration. The advantages are low cost, simple operation, and a certain removal effect on free formaldehyde; the disadvantage is that it cannot cure formaldehyde. The formaldehyde release cycle in furniture and decoration materials is as long as 3-15 years. Ventilation can only dilute the formaldehyde that has been released into the air, and the residual formaldehyde will continue to be released. Ventilation is limited by factors such as weather and house type, and it is difficult to play a role all day long.

(II) Plant absorption method

Use plant photosynthesis to absorb formaldehyde. Some plants such as green ivy and cactus have a certain absorption capacity for formaldehyde. The advantages are green and environmentally friendly, and can beautify the indoor environment; the disadvantages are extremely low formaldehyde removal efficiency, the number of stomata on plant leaves is limited, the contact area with formaldehyde is small, and the metabolism of formaldehyde is slow, which is far behind the release rate of formaldehyde. In a space with excessive formaldehyde, a large number of plants are needed to have a weak effect, and plant growth is affected by environmental conditions. In a high-concentration formaldehyde environment, its own growth will also be affected.

(III) Activated carbon adsorption method

Based on the physical adsorption characteristics of activated carbon, its porous structure can adsorb formaldehyde molecules. The advantages are low cost, easy to use, and a certain adsorption effect on low-concentration formaldehyde; the disadvantages are limited adsorption sites and easy saturation. After saturation, not only can it not continue to adsorb, but it may also release formaldehyde in the reverse direction to cause secondary pollution. In addition, the activated carbon has a slow formaldehyde removal speed and cannot quickly reduce the indoor formaldehyde concentration. In a high temperature and high humidity environment, the adsorption effect will be further reduced.

(IV) Chemical reaction method

Formaldehyde capture agents and scavengers are used to undergo chemical oxidation-reduction reactions with formaldehyde to generate carbon dioxide and water. The advantages are obvious formaldehyde removal effects and fast speed; the disadvantages are that formaldehyde can only be removed once and cannot be reused, the cost is high, and some chemical formaldehyde removal methods may produce irritating odors, which have a certain impact on the human body, and the product needs to be replaced or maintained regularly.

(V) Traditional photocatalytic degradation method

Under the action of ultraviolet light, traditional photocatalysts (photocatalysts) undergo oxidation-reduction reactions with formaldehyde to generate carbon dioxide and water. The advantages are environmentally friendly, harmless, continuous and effective, and can decompose pollutants for a long time under light conditions; the disadvantages are that it is highly dependent on light conditions, the effect is limited under natural light conditions, and the catalytic activity of photocatalysts may decrease over time. The quality of products on the market is uneven, and it is difficult for consumers to distinguish between good and bad.

The Efficient Formaldehyde Scavenger launched by Geometry Smart City Technology (Guangzhou) Co., Ltd. uses nano-high-efficiency air purifier photocatalytic technology developed based on the "natural photocatalytic theory" of Academician He Hong, breaking through traditional limitations. This product is a uniformly dispersed light blue or light white slightly transparent solution, with titanium dioxide as the main raw material. It can efficiently decompose formaldehyde and other pollutants under visible light conditions, and finally generate carbon dioxide and water. It is green and environmentally friendly and has no secondary pollution.

The technology of this product is escorted by a top scientific research team. Academician He Hong, as the chief technical director of the project, is an academician of the Chinese Academy of Engineering and a researcher at the Ecological and Environmental Research Center of the Chinese Academy of Sciences. He has profound attainments in the field of air pollution control; Professor Ye Daiqi, as the inventor of the project patent and the technical leader, has been deeply engaged in the research and development of air pollution control and environmental purification materials for a long time, and has published many SCI papers; Professor Hu Yun, also as the inventor of the patent and the technical leader, focuses on the development of environmental functional nanomaterials such as multifunctional new photo/electrocatalysts. The team has strong technical strength. This technology has applied for 8 national invention patents, of which 5 have been authorized.

Efficient Formaldehyde Scavenger can quickly capture and decompose formaldehyde with innovative photocatalytic technology, and is not strictly restricted by light conditions. Whether it is natural light or indoor lighting environment, it can stably play the role of removing formaldehyde. The product is suitable for all kinds of civil construction projects, and can efficiently deal with formaldehyde release sources such as wooden furniture, painted surfaces, and boards, creating a healthy and fresh indoor environment for engineering space, which is an ideal choice for engineering formaldehyde removal.

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