功能化碳纳米管对羟基磷灰石纳米颗粒合成的影响。
Effect of functionalized carbon nanotubes on the synthesis of hydroxyapatite nanoparticles.
作者信息
Forati Tahmineh, Behnamghader Aliasghar, Rashidi Alimorad, Gozalian Afsaneh, Ntentopolou Dionysia, Namvarasl Mahnaz, Moradi Leila
机构信息
Faculty of Biomaterial Science, Department of Biomedical Engineering, Islamic Azad University, Science and Research Branch, Ponak, Tehran, PO Box 14176766981, Iran.
出版信息
J Nanosci Nanotechnol. 2011 Jun;11(6):5423-8. doi: 10.1166/jnn.2011.3782.
The purpose of this study was to investigate the effect of the functionalized carbon nanotubes (CNT) on the nucleation of the HA nanoparticles. In this work, solutions of calcium nitrate tetra hydrate and diamonium hydrogen phosphate in water were used as Ca, P precursors. The former solution was added to an aqueous suspension of MWNTs-COOH. Different CNT functionalization percentage ratios of 1%, 2%, 3%, 4% and 5% were examined. X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR) experiments confirmed that the resulting powders were composed of hydroxyapatite. The Scanning Electron Microscopy (SEM) images illustrated a short distance effect of CNTs on the formation of the HA nanoparticles. In addition, a more detailed observation performed by Transmission Electron Microscopy (TEM) depicted the flake-like morphology of the nanoparticles. Based on the results of this research, the crystallinity decreased due to the CNT addition to the synthesis media. The sample containing a CNT functionality percentage of 5% revealed a preferred crystalline orientation compared with the samples composed of less CNT functionality percentage of 1%, 2%, 3% and 4%.
本研究的目的是探究功能化碳纳米管（CNT）对羟基磷灰石（HA）纳米颗粒成核的影响。在这项工作中，四水合硝酸钙和磷酸氢二铵的水溶液被用作钙、磷前驱体。将前一种溶液添加到羧基化多壁碳纳米管（MWNTs-COOH）的水悬浮液中。研究了1%、2%、3%、4%和5%的不同碳纳米管功能化百分比比率。X射线衍射（XRD）和傅里叶变换红外光谱（FT-IR）实验证实，所得粉末由羟基磷灰石组成。扫描电子显微镜（SEM）图像表明碳纳米管对羟基磷灰石纳米颗粒的形成具有短程效应。此外，通过透射电子显微镜（TEM）进行的更详细观察描绘了纳米颗粒的片状形态。基于本研究结果，由于向合成介质中添加了碳纳米管，结晶度降低。与碳纳米管功能化百分比为1%、2%、3%和4%的样品相比，碳纳米管功能化百分比为5%的样品显示出择优结晶取向。
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