Photocatalyst for purifying indoor furniture

Abstract

The invention relates to a photocatalyst for purifying indoor furniture, which comprises modified nano titanium dioxide particles, nano titanium dioxide particles and polycarboxylic acid, and the modified nano titanium dioxide particles are obtained by reacting the nano titanium dioxide particles with a silane coupling agent. The photocatalyst disclosed by the invention has efficient capacity of absorbing peculiar smell and formaldehyde on the surface of the furniture and bactericidal capacity, and the surface of the furniture subjected to sensory tests of volunteers does not have any unpleasant smell. Therefore, the photocatalyst for purifying the indoor furniture can thoroughly remove residual formaldehyde and peculiar smell on the surface of the furniture (such as a solid wood plate), and has a good application prospect.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a photocatalyst used for purifying indoor furniture. Background technique [0002] Photocatalyst is a kind of nanoscale metal oxide with photocatalytic activity. Its catalytic reaction can be carried out at normal temperature and pressure. Can be used forever. Common photocatalysts are nano-TiO 2 , ZnO, WO 3 , SnO 2 , SiC and its composite products, etc. Among the currently used semiconductor materials, from the perspective of catalytic performance and cost performance, nano-TiO 2 Obviously superior to several other photocatalyst materials. It is coated on the surface of the substrate, and under the action of ultraviolet light and visible light, it produces a strong catalytic degradation function: it can effectively degrade toxic and harmful gases in the air; it can effectively kill a variety of bacteria and release bacteria or fungi Toxin decomposition and harmless treatment; at the sam...

AI Technical Summary

Problems solved by technology

However, the main functional component in the photocatalyst, nano-titanium dioxide, usually contains hydroxyl groups on its surface, which is easy to be charged and agglomerated, thereby greatly reducing the specific surface area of ​​nano-titanium dioxide, resulting in a lower chance of contact with the air, thus reducing the risk of furniture removal. Reduced effects of odor and formaldehyde

It has been reported that due to the agglomeration of titanium dioxide particles caused by hydrophilicity, the ability of photocatalyst to remove formaldehyde on furniture is reduced by 20-50%.

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