The reporter learned from the Hefei Institute of Physical Science of the Chinese Academy of Sciences that Tian Xingyou and Zhang Xian’s R&D team at the Institute of Applied Technology of the Academy of Sciences have made new progress in the recycling of nano-photocatalytic materials and research on functional fabric coatings. Research results have recently been published in the international journal Cellulose.

In many pollutant treatment technologies, photocatalytic materials can effectively degrade pollutants under the action of sunlight. Various photocatalytic nanomaterials have been studied for the purification of liquid or gaseous pollutants and are considered to be the most promising. Governance approach. However, how to recycle these materials is a key issue. Taking into account the loose porous structure characteristics of cotton fabrics and its advantages of hydrophilicity, naturalness, and wide application, the research group successfully constructed a nano-photocatalytic fabric coating with the use of a template as a load, achieving the recycling and reuse of nano-photocatalytic materials. By alternating layers of nanophotocatalytic materials, photocatalytic efficiency is greatly improved.

The coated fabric has excellent photodegradation activity for both liquid and gaseous pollutants. Under simulated sunlight, all coated fabrics can effectively degrade polluting gases (eg, formaldehyde, etc.) and liquid contaminants (eg, rhodamine, etc.). ), showing excellent photocatalytic activity of degraded gases and liquid contaminants.

Due to the excellent characteristics of the material, on the one hand, it is used in the recyclable water purification of the photocatalytic fabric mesh, which is particularly suitable for the treatment of urban black and odorous water bodies. It decomposes and deodorizes the toxic organic matter in the water body and increases the water content. Oxygen, renewed self-purification, black stinky water becomes clear water. On the other hand, fabrics made of photocatalytic function are made into various textiles such as curtains, sofa cushions, and carpets, giving them excellent functional properties such as degradation of formaldehyde and other gaseous pollutants, antibacterial and anti-ultraviolet rays, and the unique effect of purifying indoor air. Areas such as textiles or automotive upholstery textiles show attractive prospects. (Reporter Wu Changfeng)

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