Application of Supported Non-Noble Metal Catalysts for Formaldehyde Oxidation at Low Temperature

Formaldehyde is one of the most common volatile organic pollutants in the indoor environment. It has been confirmed that long.term exposure to formaldehyde causes great harm to health. Supported non.noble metal catalysts have shown excellent performance in formaldehyde removal and practical applications. which has attracted great attention of researchers. This article highlights the recent development of formaldehyde removal by supported non.noble metal catalysts at low temperature. including thermal catalysts. photocatalysts and non. thermal plasma assisted catalysts. Moreover. reaction factors that have great effects on formaldehyde removal and mechanisms are reviewed. The results show that reaction conditions. supports types and preparing conditions are the most important factors in the low.temperature catalytic removal of formaldehyde. Supported non.noble metal catalysts exhibit outstanding performance in the photocatalysis and thermal catalysis of formaldehyde. Besides. remarkable formaldehyde removal efficiency was also observed at low temperature or under UV light irradiation. However. catalytic activity improvement of the supported non.noble metal catalysts under visible light and room temperature should be further investigated. It is still the point of future research to reduce by.products and energy consumption in formaldehyde removal process by non.thermal plasma combined with non.noble metal catalysts. Here. this paper also proposes the prospects on the development direction of supported non.noble metal catalysts in formaldehyde removal.