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How Oxygen-Containing Groups on Graphene Influence the Antibacterial Behaviors
Qiu, Jiajun1; Wang, Donghui1; Geng, Hao1; Guo, Jingshu1; Qian, Shi; Liu, Xuanyong
2017
发表期刊ADVANCED MATERIALS INTERFACES
ISSN2196-7350
卷号4期号:15
摘要Graphene can be obtained with the reduction of graphene oxide (GO). Various reduction methods will result in different varieties and amounts of oxygen-containing groups on the reduced graphene oxide (rGO) with diverse properties. In this work, rGO is fabricated on the titanium surfaces by the reduction process of GO through three types of reduction methods, for example, vacuum thermal annealing, hydrazine hydrate, and sodium borohydride chemical reduction. Results show that thermal annealing can remove carboxyl entirely at 600 degrees C for 1 h, and hydrazine hydrate can eliminate the oxygen functionalities, especially for epoxide. For sodium borohydride, it can dispose of carbonyl by converting carbonyl into hydroxyl. The rGO with different reduction process exhibits different responses for bacteria with higher numbers of carboxyl and hydroxyl/epoxide showing more effective antibacterial activities. It is concluded that carboxyl can inhibit the adhesion of bacteria on rGO surfaces by electrostatic repulsion and kill the bacteria with oxidative pressure mediated with the production of reactive oxygen species which is closely related with hydroxyl/epoxide. Furthermore, GO and rGO all exhibit excellent biocompatibility with no cytotoxicity.
DOI10.1002/admi.201700228
WOS记录号WOS:000406767300008
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/26657
专题中国科学院上海硅酸盐研究所
作者单位1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Qiu, Jiajun,Wang, Donghui,Geng, Hao,et al. How Oxygen-Containing Groups on Graphene Influence the Antibacterial Behaviors[J]. ADVANCED MATERIALS INTERFACES,2017,4(15).
APA Qiu, Jiajun,Wang, Donghui,Geng, Hao,Guo, Jingshu,Qian, Shi,&Liu, Xuanyong.(2017).How Oxygen-Containing Groups on Graphene Influence the Antibacterial Behaviors.ADVANCED MATERIALS INTERFACES,4(15).
MLA Qiu, Jiajun,et al."How Oxygen-Containing Groups on Graphene Influence the Antibacterial Behaviors".ADVANCED MATERIALS INTERFACES 4.15(2017).
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