2016年6月27日，国际著名学术期刊Nanoscale（SCI 一区，影响因子7.76）以“Double Hexagonal Graphene Ring Synthesized by Growth-Etching Method”为题在线发表了我院青年教师刘金养博士等在石墨烯方面的最新研究成果。该成果应用化学气相沉积法，发展了生长-刻蚀的技术，成功生长出双环六边形石墨烯纳米结构，结果对于可控制备石墨烯纳米结构甚至其它二维材料提供了一个很好的思路，具有积极的意义。
作者和摘要如下：
Jinyang Liu* (刘金养), Yangyang Xu(徐杨阳，硕士生，共同第一作者), Hongbing Cai（蔡洪冰，中国科学技术大学）, Chuandong Zuo(左传东，本科生，2012级材料物理)
Zhigao Huang（黄志高）, Limei Lin(林丽梅), Xiaomin Guo (郭晓敏，本科生，2013级材料物理), Zhendong Chen (陈震东，本科生，2013级材料物理), Fachun Lai (赖发春),
Double Hexagonal Graphene Ring Synthesized by Growth-Etching Method, Nanoscale, 2016, DOI: 10.1039/C6NR02515C
Precisely control the layer number, stacking order, edge configuration, shape and structure of the graphene is extremely challenging but highly desirable in scientific research. In this report, a new concept namely growth-etching method has been explored to synthesize graphene ring with the chemical vapor deposition process. The graphene ring is the hexagonal structure, which contains a hexagonal exterior edge and a hexagonal hole in the centre region. The most important concept introduced here is that the oxide nanoparticle derived from annealing is found to be played dual roles, which firstly acts as nucleation site to grow the hexagonal graphene domain and then works as defect for etching to form a hole. The evolution process of the graphene ring with the etching time was carefully disclosed. In addition, the double hexagonal graphene ring was successfully synthesized for the first time by repeating the growth-etching process, which is not only confirmed the validity and repeatability of the method developed here but also may be further extended to grow unique graphene nanostructure with three, four, even tens of the graphene rings. Finally, a schematic model was drawn to illustrate how the double hexagonal graphene ring generates and propagates. The results shown here may provide valuable instructions for the design and growth unique nanostructure in graphene even the other two-dimensional materials.
官网链接：http://pubs.rsc.org/en/content/articlelanding/2016/nr/c6nr02515c#!divAbstract
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Double Hexagonal Graphene Ring Synthesized by Growth-Etching Method.pdf
