Beijing (Web Desk) — Chinese scientists have developed an advanced air filter that can charge itself using sunlight or indoor LED light and attract pollutants and germs present in the air.
According to research published in the journal “Chem,” the filter was developed by researchers at Jilin University in China. It uses a thin polypropylene membrane, the same material used in commercial face masks.
The researchers applied a material to the surface of the membrane that generates an electric charge when exposed to light and heat. This charge attracts particles present in the air, helping the filter trap pollutants and germs without requiring an external electrical connection.
According to the research, the process can be understood through the example of static electricity generated in everyday life, in which an electric charge attracts dust particles.
Due to the global problem of air pollution, demand for air purifiers and air-cleaning technologies is continuously increasing. According to available estimates, the global air purifier market could reach approximately £14.5 billion in 2026, with further growth expected in the coming years.
According to the World Health Organization, air pollution is linked to around 7 million premature deaths every year. Winter smog in South Asia, along with smoke from wildfires in various parts of Europe, Asia and the United States, continues to pose a challenge to air quality.
The researchers say the technology could also be used in reusable models of N95 masks in the future. If the technology proves viable on a large scale, such filters could help reduce the need for external electricity for air purification.