Hierarchical regrowth of flowerlike nanographene sheets on oxygen-plasma-treated carbon nanowalls
Hierarchical regrowth of flowerlike nanographene sheets on oxygen-plasma-treated carbon nanowalls
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DOI：
10.7567/apex.7.046201
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发表时间：
2014-03
影响因子：
2.3
通讯作者：
H. Shimoeda;H. Kondo;K. Ishikawa;M. Hiramatsu;M. Sekine;M. Hori
中科院分区：
文献类型：
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作者：
H. Shimoeda;H. Kondo;K. Ishikawa;M. Hiramatsu;M. Sekine;M. Hori
在o2等离子体刻蚀法制备的矛状碳纳米壁（CNWs）上，层次性地再生出了花状纳米石墨烯片。CNWs上的“矛”充当了生长花朵状片状纳米石墨烯片的“茎”，其中纳米花的根部位于缺陷或无序的位置。石墨结构上的缺陷是由氧相关自由基和离子在o2基等离子体中辐照引起的，并作为花状纳米石墨烯成核的位点。经o2等离子体处理后再生的多孔碳纳米结构具有相对较高的表面积，因此具有很好的电化学应用前景。
Cauliflorous nanographene sheets were hierarchically regrown on the spearlike structures of carbon nanowalls (CNWs) produced by O2-plasma etching. The spears on the CNWs acted as a stem for the growth of flowerlike flaky nanographene sheets, where the root of the nanoflower was located at a defect or disordered site. The defects on the graphitic structures were induced by irradiation with oxygen-related radicals and ions in the O2-based plasmas and acted as sites for the nucleation of flowerlike nanographene. The porous carbon nanostructures regrown after O2-plasma treatment have a relatively higher surface area and are thus promising materials for electrochemical applications.