journal article·2020-09-22

Self-Reporting and Photothermally Enhanced Rapid Bacterial Killing on a Laser-Induced Graphene Mask

Libei Huang, Siyu Xu, Zhaoyu Wang, Ke Xue, Jianjun Su, Yun Song, Sijie Chen, Chunlei Zhu, Ben Zhong Tang, Ruquan Ye

ACS Nano· Volume 14· Issue 9
Publisher page

Abstract

Wearing face masks has been widely recommended to contain respiratory virus diseases, yet the improper use of masks poses a threat of jeopardizing the protection effect. We here identified the bacteria viability on common face masks and found that the majority of bacteria (90%) remain alive after 8 h. Using laser-induced graphene (LIG), the inhibition rate improves to ∼81%. Combined with the photothermal effect, 99.998% bacterial killing efficiency could be attained within 10 min. For aerosolized bacteria, LIG also showed superior antibacterial capacity. The LIG can be converted from a diversity of carbon precursors including biomaterials, which eases the supply stress and environmental pressure amid an outbreak. In addition, self-reporting of mask conditions is feasible using the moisture-induced electricity from gradient graphene. Our results improve the safe use of masks and benefit the environment.
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Research context

OpenAlex topics: Nanoplatforms for cancer theranostics · Advanced Sensor and Energy Harvesting Materials · Dental Research and COVID-19

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, City University of Hong Kong, 999077, Hong Kong, China

Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

Key Laboratory of Functional Polymer Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China

Ming Wai Lau Centre for Reparative Medicine, Karolinska Institutet, Hong Kong, China

SCUT-HKUST Joint Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

HKUST-Shenzhen Research Institute, No. 9 Yuexing First Road, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China

Center for Aggregation-Induced Emission, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Tianhe Qu, Guangzhou 510640, China

AIE Institute, Guangzhou Development District, Huangpu, Guangzhou 510530, China

State Key Laboratory of Marine Pollution, City University of Hong Kong, 999077, Hong Kong, China

Funding

Nankai University · City University of Hong Kong · State Key Laboratory of Marine Pollution, City University of Hong Kong

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