Sonication-assisted dispersion of carbon nanotubes in aqueous solutions of the anionic surfactant SDBS: The role of sonication energy
Sonication-assisted dispersion of carbon nanotubes in aqueous solutions of the anionic surfactant SDBS: The role of sonication energy
复制标题
碳纳米管在阴离子表面活性剂 SDBS 水溶液中的超声辅助分散：超声能量的作用
DOI：
10.1007/s11434-013-5697-2
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发表时间：
2013-02
影响因子：
--
通讯作者：
Lin DaoHui
中科院分区：
文献类型：
--
作者：
Jing QingFeng;Yue RenLiang;Jiang Wei;Lin DaoHui
超声是促进碳纳米管（CNTs）分散和提高其溶解度的有力技术；这对于碳纳米管的应用是必要的，特别是在生物化学和生物医学领域。在本研究中，我们进行了批量实验，以评估在广泛使用的阴离子表面活性剂十二烷基苯磺酸钠（SDBS）存在下，超声能量对CNTs分散的作用。结果表明，SDBS溶液中分散CNTs的浓度与超声能量有关，而与超声时间和超声器输出功率无关。分散CNTs的数量与SDBS和CNTs的浓度以及CNTs的长度呈正相关。在相对较低的超声能量下，观察到含氧官能团在分散的CNTs上的促进作用。最佳能量，即通过超声使分散的碳纳米管在SDBS溶液中达到饱和悬浮所需的最小能量，与碳纳米管直径有关，因为直径越小的管之间的vdW力越大。为了确定分散碳纳米管所需的能量，我们构建了一条指数衰减曲线，以确定最佳能量值作为碳纳米管外径的函数。
Sonication is a powerful technique to promote the dispersion of carbon nanotubes (CNTs) and enhance their solubility; this is necessary for CNT applications, especially in the biochemical and biomedical fields. In this study, batch experiments were conducted to evaluate the role of sonication energy on the dispersion of CNTs in the presence of a widely used anionic surfactant, sodium dodecylbenzene sulfonate (SDBS). It was observed that the concentration of dispersed CNTs in the SDBS solution depended on the sonication energy, but not the sonication time or output power of the sonicator alone. The amount of dispersed CNTs was positively correlated with the concentrations of SDBS and CNTs, and the length of the CNTs. The promotion of oxygen-containing functional groups on the dispersed CNTs was observed at relatively low sonication energies. The optimal energy, i.e. the minimum energy supplied by sonication to achieve a saturated suspension of dispersed CNTs in the SDBS solution, was CNT diameter-dependent, because of the larger vdW forces between tubes of smaller diameter. An exponential decay curve was constructed for the optimal energy values as a function of the outer CNT diameter, to assist in determining the energy needed to disperse CNTs.
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影响因子：
9.9
作者：
Bystrzejewski, M.;Huczko, A.;Ruemmeli, M. H.
通讯作者：
Ruemmeli, M. H.
影响因子：
10.9
作者：
Tatsuhiro Yamamoto;S. Noda;Masaru Kato
通讯作者：
Tatsuhiro Yamamoto;S. Noda;Masaru Kato
离子强度和pH值对单宁酸促进碳纳米管悬浮液稳定性的影响
影响因子：
10.9
作者：
Lin, Daohui;Liu, Ni;Xing, Baoshan
通讯作者：
Xing, Baoshan
影响因子：
10.8
作者：
Howard Wang;Wei Zhou;D. Ho;K. Winey;J. Fischer;C. Glinka;E. Hobbie
通讯作者：
Howard Wang;Wei Zhou;D. Ho;K. Winey;J. Fischer;C. Glinka;E. Hobbie
影响因子：
56.9
作者：
O'Connell, MJ;Bachilo, SM;Smalley, RE
通讯作者：
Smalley, RE