A simple and rapid method to graft hydroxyapatite on carbon nanotubes.
A simple and rapid method to graft hydroxyapatite on carbon nanotubes.
复制标题
DOI：
10.1016/j.msec.2011.06.001
复制
发表时间：
2011-10-10
影响因子：
7.9
通讯作者：
Oki, Adererni
中科院分区：
文献类型：
--
作者：
Neelgund, Gururaj M.;Olurode, Kehinde;Luo, Zhiping;Oki, Adererni
本文介绍了一种简单有效的羟基磷灰石原位接枝单壁碳纳米管(SWCNTs)的方法。通过在H_2SO_4和HNO_3的混合物中回流，在其表面引入羧基，对原始的单壁碳纳米管进行了化学活化。将得到的羧化碳纳米管进一步用于HA的接枝。傅立叶变换红外光谱和拉曼光谱研究证实了羟基磷灰石的形成及其在单壁碳纳米管上的接枝。用X射线衍射仪和能谱分析分别研究了HA的物相组成和存在的Ca~(2+)和PO_(43)−离子。用扫描电子显微镜和透射电子显微镜分析了功能化的单壁碳纳米管的表面形貌。热重分析证实了单壁碳纳米管表面存在羟基磷灰石，表现出与官能化单壁碳纳米管不同的热重曲线。总体而言，该方法在羧化的单壁碳纳米管表面实现了均匀的低晶态HA接枝，界面结合能力强。
Herein a simple and effective approach is introduced to functionalize single walled carbon nanotubes (SWCNTs) by in-situ grafting of hydroxyapatite (HA). The pristine SWCNTs were chemically activated through introduction of carboxylic groups on their surfaces by refluxing in the mixture of H2SO4 and HNO3. The resulting carboxylated SWCNTs were further utilized for grafting of HA. The Fourier transform infrared and Raman spectroscopic studies demonstrated the formation of HA and its grafting over SWCNTs. The phase composition of HA and existence Ca2+ and PO43− ions were studied using X-ray diffraction and energy dispersive X-ray analyses, respectively. The surface morphology of functionalized SWCNTs was analyzed using scanning electron microscopy and transmission electron microscopy. Thermogravimetric analysis confirmed the existence of HA on SWCNTs by exhibiting different thermogram for pure HA and functionalized SWCNTs. Overall this method produced uniform grafting of low crystalline HA on carboxylated SWCNTs with strong interfacial bonding.
登录
查看更多内容
影响因子：
3.9
作者：
Lobo, Anderson O.;Corat, Marcus A. F.;Corat, Evaldo J.
通讯作者：
Corat, Evaldo J.
影响因子：
10.8
作者：
Zanello, LP;Zhao, B;Haddon, RC
通讯作者：
Haddon, RC
沉积在聚（乳酸）接枝碳纳米管上的PD纳米颗粒：在HECK C-C偶联反应中的合成，表征和应用。
影响因子：
5.5
作者：
Neelgund, Gururaj M.;Oki, Aderemi
通讯作者：
Oki, Aderemi
影响因子：
4.9
作者：
MacDonald, RA;Laurenzi, BF;Stegemann, JP
通讯作者：
Stegemann, JP
影响因子：
10.9
作者：
Lahiri, Debrupa;Singh, Virendra;Agarwal, Arvind
通讯作者：
Agarwal, Arvind