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Research Article

Single Fe atom-anchored manganese dioxide for efficient removal of volatile organic compounds in refrigerator

Yiwen Wang1,2,§Jun Zhang3,§Yongfei Zhang3Yu Zhang2Zhe Wang3( )Jing Wang4( )Yuen Wu1,2( )
Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230001, China
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
Hefei Hualing Co., Ltd, Hefei 230088, China
Linkway Technology Co., Ltd, Research Institute of Single Atom Catalysts Industry Technology, Nanning 530000, China

§ Yiwen Wang and Jun Zhang contributed equally to this work.

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Graphical Abstract

We have designed a cleaner module incorporating single Fe atom-anchored manganese dioxide catalysts (FeSAs-MnO2), equipped with non-thermal plasma (NTP). FeSAs-MnO2 cleaner module demonstrates outstanding performance of removing volatile organic compounds (VOCs, trimethylamine) at low-temperature confined spaces, especially in refrigerators.


The efficient and rapid removal of volatile organic compounds (VOCs) holds significant importance for ensuring food quality and human health, particularly within the low-temperature confined spaces in refrigerators. However, achieving effective VOCs degradation under such conditions poses challenges in terms of activating inert bonds and facilitating mass transfer. In this study, we propose a novel solution by designing a cleaner module that incorporates 1.07% single Fe atom-anchored manganese dioxide catalysts (FeSAs-MnO2). The combination of single Fe atoms and defect-rich MnO2 substrate efficiently activates molecular oxygen, leading to enhanced generation of highly reactive oxygen species (ROS). Non-thermal plasma (NTP) and circulating fan are introduced to facilitate the regeneration of catalytic activity and improve mass transfer. The FeSAs-MnO2 cleaner module demonstrates exceptional performance in trimethylamine (TMA) removal, achieving a conversion efficiency of 98.9% for 9 ppm within just 9 min. Furthermore, accelerated aging tests predict an extended service life of up to 45 years for the FeSAs-MnO2 cleaner module, surpassing the expected lifespan of refrigerators significantly.

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Nano Research
Pages 3927-3933
Cite this article:
Wang Y, Zhang J, Zhang Y, et al. Single Fe atom-anchored manganese dioxide for efficient removal of volatile organic compounds in refrigerator. Nano Research, 2024, 17(5): 3927-3933.






Web of Science






Received: 27 October 2023
Revised: 29 November 2023
Accepted: 30 November 2023
Published: 13 January 2024
© Tsinghua University Press 2023