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

Hyuk Jae Kwon (), Dong Sik Yang, Min Seok Koo, Sang Min Ji, Joonseon Jeong, Sehyeong Oh, Su Keun Kuk, Hyeon-su Heo, Dong Jin Ham, Mijong Kim, Hyoungwoo Choi, Jong-Min Lee, Joong-Won Shur, Woo-Jin Lee, Chang-Ook Bin, Nikolay Timofeev, Huiqing Wu, Liming Wang, Taewoo Lee, Daniel J. Jacob and Hyun Chul Lee ()
Additional contact information
Hyuk Jae Kwon: Samsung Electronics Co., Ltd.
Dong Sik Yang: Samsung Electronics Co., Ltd.
Min Seok Koo: Samsung Electronics Co., Ltd.
Sang Min Ji: Samsung Electronics Co., Ltd.
Joonseon Jeong: Samsung Electronics Co., Ltd.
Sehyeong Oh: Samsung Electronics Co., Ltd.
Su Keun Kuk: Samsung Electronics Co., Ltd.
Hyeon-su Heo: Samsung Electronics Co., Ltd.
Dong Jin Ham: Samsung Electronics Co., Ltd.
Mijong Kim: Samsung Electronics Co., Ltd.
Hyoungwoo Choi: Samsung Electronics Co., Ltd.
Jong-Min Lee: Samsung Electronics Co., Ltd.
Joong-Won Shur: Corning Precision Material Co., Ltd.
Woo-Jin Lee: Corning Precision Material Co., Ltd.
Chang-Ook Bin: Corning Precision Material Co., Ltd.
Nikolay Timofeev: Corning Scientific Center; 26, lit.A
Huiqing Wu: Corning Research Center China; Block H
Liming Wang: Corning Research Center China; Block H
Taewoo Lee: Heesung Catalysts Co.; #507-1Da, 91, Somanggongwon-ro
Daniel J. Jacob: Harvard University
Hyun Chul Lee: Samsung Electronics Co., Ltd.

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Particulate matter (PM) and volatile organic compounds (VOCs) are recognised as hazardous air pollutants threatening human health. Disposable filters are generally used for air purification despite frequent replacement and waste generation problems. However, the development of a novel regenerable and robust filter for long-term use is a huge challenge. Here, we report on a new class of facile water-washing regenerable ceramic catalyst filters (CCFs), developed to simultaneously remove PM (>95%) and VOCs (>82%) in single-pass and maximized space efficiency by coating the inner and outer filter channels with an inorganic membrane and a Cu2O/TiO2 photocatalyst, respectively. The CCFs reveal four-fold increase in the maximum dust loading capacity (approximately 20 g/L) in relation to conventional filters (5 g/L), and can be reused after ten regeneration capability with simple water washing retaining initial PM and VOC removal performances. Thus, the CCFs can be well-suited for indoor and outdoor air purification for 20 years, which shows a huge increase in lifetime compared to the 6-month lifespan of conventional filters. Finally, we believe that the development and implementation of CCFs for air purification can open new avenues for sustainable technology through renewability and zero-waste generation.

Date: 2023
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DOI: 10.1038/s41467-023-36050-w

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