Antibacterial graphene oxide coatings on polymer substrate

• DOI: 10.1016/j.apsusc.2017.12.006
• Publication Date: 2017-12-05T23:42:59Z
• Authors: Yiming Liu; Jing Wen; Yang Gao; Tianyang Li; Huifang Wang; Hong Yan; Baolong Niu; Ruijie Guo
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Graphene oxide (GO) was thought to be a promising antibacterial material. In this work, graphene oxide coatings on polymer substrate were prepared and the antibacterial activity against E. coli and S. aureus was investigated. It was demonstrated that the coatings exhibited stronger antibacterial activity against E. coli with thin membrane than S. aureus with thick membrane. Take into consideration the fact that the coatings presented smooth, sharp edges-free morphology and bonded parallelly to substrate, which was in mark contrast with their precursor GO nanosheets, oxidative stress mechanism was considered the main factor of antibacterial activity. The coatings, which are easy to recycle and have no inhalation risk, provide an alternative for application in antibacterial medical instruments.