期刊
SENSORS
卷 22, 期 20, 页码 -出版社
MDPI
DOI: 10.3390/s22207952
关键词
antibacterial device; Ag nanoparticles; graphene; sewage treatment
资金
- Leading topic of China Railway Group Corporation
- key topic of China Railway Research Institute of China Railway Research Institute (Scientific Research) [2020-KJ009-Z009-A2]
In this study, an antibacterial device was developed by combining silver nanoparticles with reduced graphene oxide, demonstrating excellent bacterial removal capacity and potential applications in sewage treatment and sensor protection.
In recent years, hazardous wastewater treatment has been a complex and global problem. In this work, by considering the antimicrobial activity of Ag nanoparticles (AgNPs) and reduced graphene oxide (rGO), we constructed an antibacterial device (G-AgNP) with AgNPs conformably deposited onto a 3D scaffold of reduced graphene oxide in situ. The major limitation, which is difficult to recycle, of two-dimensional graphene-silver composite materials in previous studies is improved. Characterization techniques, SEM, TEM, XRD, and XPS, confirmed the synthesis of nanocomposites. Attributed to its larger specific area, more active sites, and synergistic enhancement, the G-AgNP device demonstrated the best bacterial removal capacity, with an antibacterial rate for both E. coli and S. aureus as high as 100% at quite low AgNP contents. The reported G-AgNP has potential application as a wearable sewage treatment device and for the protection of wearable sensors as a promising sterilizing candidate based on its high and stable antibacterial efficiency.
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