2013•Advances in Natural Sciences Nanoscience and NanotechnologyOpen access

Surface modification and functionalization of carbon nanotube with some organic compounds

Văn Thu Lê, Cao Long Ngo, Quoc Trung Le, Trinh Tung Ngo, Đức Nghĩa Nguyễn, Minh Thành Vu

Abstract

In this work the surface modification and functionalization of carbon nanotubes (CNTs) were investigated. CNTs were firstly treated by acid mixture H 2 SO 4 /HNO 3 to introduce the carboxylic group onto the surface of CNTs. This carboxylic group was used as reaction precursor in the functionalization. Two functional groups, dodecylamine (DDA) and 3-aminopropyl triethoxysilane (3-APTES), were successfully covalently attached to CNTs. The functionalized CNTs were characterized by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, differential scanning calorimetry and thermal gravimetric analysis (DSC/TGA) and transmission electron microscopy (TEM) methods. The CNTs attached to the organofunctional moieties have greater versatility for further utilization in different application fields such as biology, nanocomposites, solar energy, etc.

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Key concepts: Surface modification, Triethoxysilane, Carbon nanotube, Fourier transform infrared spectroscopy, Materials science, Thermogravimetric analysis, Silanization, Raman spectroscopy