Samsung develops Long-lifetime water-washable ceramic catalyst filter for air purification


Samsung today introduced a new air filter technology that simultaneously collects particulate matter (PM) and decomposes Volatile Organic Compounds (VOCs) and can be used for 20 years through simple water washing. A study about the technology was published in the journal Nature Communications. Samsung plans to expand the research into accelerating the commercialization of long-lifetime filters in the future.

Conventional air purification filters need frequent replacement because of their short cycle of six months to one year. In addition, every single filter can only remove either PM or VOCs, respectively, limiting air purifiers’ space efficiency. To address these problems, researchers at Samsung Advanced Institute of Technology developed and implemented an unprecedented filter technology that applies photocatalysts such as copper oxide (Cu2O) and titanium dioxide (TiO2) for the first time and verifies the viability for commercialization.

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The filter is designed to capture PMs first in the porous ceramic wall at the inlet channel, where the inorganic membrane is coated and decomposes VOC gases on the photocatalyst on the outlet channel under a single-pass airflow. The Samsung Advanced Institute of Technology developed Cu2O/TiO2 photocatalyst is insoluble, the filter is regenerable by simple water-washing and still retains its initial PM and VOC gas removal performance.

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Samsung’s ceramic catalyst filter technology is expected to help implement compact air purification systems, significantly reducing both disposable waste and the cost burden caused by frequent filter replacement.

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