Functionalization of Halloysite Clay Nanotubes by Grafting with γ-Aminopropyltriethoxysilane
University of Sydney · Guangzhou Institute of Geochemistry · +2 more institutions
Abstract
Surface modification of natural halloysite clay nanotubes with γ-aminopropyltriethoxysilane (APTES) was investigated. Untreated and modified samples were characterized by nitrogen adsorption, X-ray diffraction, elemental analysis, thermogravimetry, transmission electron microscopy, atomic force microscopy, MAS nuclear magnetic resonance (29Si, 13C, 29Al), and Fourier transform infrared spectroscopy. The modification mechanism was found to include not only the direct grafting of APTES onto the hydroxyl groups of the internal walls, edges and external surfaces of the nanotubes but other processes in which oligomerized APTES condensed with the directly grafted APTES to form a cross-linked structure. The thermal…
Citation impact
- FWCI
- 6.76
- Percentile
- 100%
- References
- 48
Authors
7- PYPeng YuanCorresponding
University of Sydney, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, UNSW Sydney
- PDPeter D. Southon
Chinese Academy of Sciences, University of Sydney, Guangzhou Institute of Geochemistry, UNSW Sydney
- ZLZongwen Liu
UNSW Sydney, University of Sydney, Chinese Academy of Sciences, Guangzhou Institute of Geochemistry
- MEMalcolm E. R. Green
UNSW Sydney, University of Sydney, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
- JMJames M. Hook
Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, University of Sydney, UNSW Sydney
Topics & keywords
- Halloysite
- Surface modification
- Thermogravimetry
- Grafting
- Nanocomposite
- Fourier transform infrared spectroscopy
- Chemical engineering
- Materials science