期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 24, 页码 21822-21829出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b03194
关键词
graphene quantum dots; heteroatom doping; enhanced antioxidant; antibacterial
资金
- National Natural Science Foundation of China [21674011]
- Beijing Municipal Natural Science Foundation [2172040]
- Fundamental Research Funds for the Central Universities [FRF-GF-17-B11]
Production or elimination of highly reactive oxygen species is critical in antioxidant, photodynamic, therapeutic, and antibacterial applications. Recent studies have demonstrated that graphene quantum dots (GQDs) possess anti- and pro-oxidant properties simultaneously. However, their efficiency is low. Here, we report chlorine-doped GQDs (Cl-GQDs) with a tunable Cl doping amount and improved anti- and pro-oxidant activities. The scavenging performance and the free radical-produced efficiency of Cl-GQDs are about 7-fold and 3-fold, respectively, higher than those of the undoped GQDs. Meanwhile, Cl-GQDs are considered to be promising for antibacterial applications because of their enhanced singlet oxygen generating ability. We hope that this study could provide a new strategy to develop nanomaterials for application in the anti- and pro-oxidant field.
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