冯倩等在ACS NANO上发表学术论文

发布时间: 2013-09-21 访问次数: 671


Qian Feng, Nujiang Tang, Fuchi Liu, Qingqi Cao, Wenhai Zheng, Wencai Ren, Xiangang Wan, and Youwei Du, Obtaining high localized spin magnetic moments by fluorination of reduced graphene oxide, ACS NANO 7, 6729-6734(2013).


摘要:Fluorination was con firmed to be the most effective route to introduce localized spins in graphene. However, adatoms clustering in perfect graphene lead to a low e ffi ciency. In this study, we report experimental evidence of the generation of localized spin magnetic moments on defective graphene (reduced graphene oxide) through fluorination. More interstingly, the result shows that defects help increase the efficiency of the fluorination with regard to the density of magnetic moments created. Fluorinated reduced graphene oxide can have a high magnetic moment of 3.187 × 10–3 μB per carbon atom and a high efficiency of  8.68 × 10–3 μB per F atom. It may be attributed to the many vacancies, which hinder the clustering of F atoms, and introduce many magnetic edge adatoms.