羟基磷灰石在石墨烯纳米片上的沉积。
deposition of hydroxyapatite on graphene nanosheets.
作者信息
Neelgund Gururaj M, Oki Aderemi, Luo Zhiping
机构信息
Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA.
Microscopy and Imaging Center and Materials Science and Engineering Program, Texas A&M University, College Station, TX 77843, USA.
出版信息
Mater Res Bull. 2013 Feb 1;48(2):175-179. doi: 10.1016/j.materresbull.2012.08.077.
Abstract
Graphene nanosheets were effectively functionalized by deposition of hydroxyaptite through a facile chemical precipitation method. Prior to grafting of hydroxyapatite, chemically modified graphene nanosheets were obtained by the reduction of graphene oxide in presence of ethylenediamine. The resulting hydroxyapatite functionalized graphene nanosheets were characterized by attenuated total reflection IR spectroscopy, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray energy dispersive spectroscopy, Raman spectroscopy and thermogravimetric analysis. These characterization techniques revealed the successful grafting of hydroxyapatite over well exfoliated graphene nanosheets without destroying their structure.
摘要
通过简便的化学沉淀法沉积羟基磷灰石，有效地实现了氧化石墨烯纳米片的功能化。在接枝羟基磷灰石之前，通过在乙二胺存在下还原氧化石墨烯获得了化学改性的氧化石墨烯纳米片。通过衰减全反射红外光谱、X射线衍射、场发射扫描电子显微镜、透射电子显微镜、X射线能量色散光谱、拉曼光谱和热重分析对所得的羟基磷灰石功能化氧化石墨烯纳米片进行了表征。这些表征技术表明，羟基磷灰石成功地接枝到了充分剥离的氧化石墨烯纳米片上，而没有破坏其结构。
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