Multiple-twinned silver nanoparticles supported on mesoporous graphene with enhanced antibacterial activity. (December 2019)

• Record Type: Journal Article
• Authors: Yang, Lini; Meng, Fanchi; Qu, Xiaoyue; Xia, Lixin; Huang, Fei; Qin, Shuai; Zhang, Minghe; Xu, Fen; Sun, Lixian; Liu, Hongyang
• Is Part Of: Carbon. Volume 155(2019)
• Page Start: 397
• Page End: 402
• Publication Date: 2019-12
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2019.09.002
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Multiple-twinned silver nanoparticles (Ag-NPs) supported on mesoporous graphene were prepared through a facile oxidative etching process. Firstly, the Ag-NPs are supported onto the traditional graphene (Ag-NPs/G) by the typical wetness impregnation method. Then, the mesopores with sizes ranging from 5 to 10 nm were successfully fabricated on the initial graphene support through the oxidative etching process assisted by the Ag-NPs. And the Ag-NPs with multiple-twinned structure were simultaneously generated on the mesoporous graphene (Ag-Mt NPs/Mp G) during the etching process. The synergistic effect of both the unique mesopores on the graphene and the as-prepared multiple-twinned Ag-NPs in the Ag-Mt NPs/Mp G sample dramatically enhanced the release rate of silver ions (Ag + ) and resulted in robust antibacterial activity of against Escherichia coli, in comparison with that of single crystallized Ag-NPs supported on traditional graphene (Ag-NPs/G). The present method paves a feasible way to design novel Ag based antibacterial materials. Graphical abstract: The multiple-twinned Ag nanoparticles (Ag-Mt NPs) supported on mesoporous graphene (Ag-Mt NPs/Mp G) exhibit an enhanced antibacterial activity against Escherichia coli, comparing with that of Ag-NPs supported on the traditional graphene (Ag-NPs/G). Image 1