Abstract
The diameter of imogolite nanotubes was regulated by altering the synthesis temperature and was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and 29Si cross-polarization magic angle spinning nuclear magnetic resonance (CP-MAS NMR). Imogolite diameter modulation via thermodynamic control was induced by curvature formation of the proto-imogolite cluster, which was dependent on the degree of silanol (SiOH) substitution. At lower temperature, 323 K, the amount of SiOH substitution in the proto-imogolite clusters decreases and accordingly reduces the hydrogen bonding among SiOH substituents. In contrast, at higher temperature, 371 K, the large amount of SiOH substitution in the proto-imogolite clusters increases the hydrogen bonding among silanol groups, which also increases the degree of the curvature. The proto-imogolite clusters with a larger curvature can quickly create tubular structures by forming a circle with a smaller diameter.
| Original language | English |
|---|---|
| Pages (from-to) | 8148-8152 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry C |
| Volume | 118 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - Apr 17 2014 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
Thermodynamic control of diameter-modulated aluminosilicate nanotubes. / Lee, Hoik; Jeon, Yangjun; Lee, Youngil; Lee, Sang Uck; Takahara, Atsushi; Sohn, Daewon.
In: Journal of Physical Chemistry C, Vol. 118, No. 15, 17.04.2014, p. 8148-8152.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermodynamic control of diameter-modulated aluminosilicate nanotubes
AU - Lee, Hoik
AU - Jeon, Yangjun
AU - Lee, Youngil
AU - Lee, Sang Uck
AU - Takahara, Atsushi
AU - Sohn, Daewon
PY - 2014/4/17
Y1 - 2014/4/17
N2 - The diameter of imogolite nanotubes was regulated by altering the synthesis temperature and was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and 29Si cross-polarization magic angle spinning nuclear magnetic resonance (CP-MAS NMR). Imogolite diameter modulation via thermodynamic control was induced by curvature formation of the proto-imogolite cluster, which was dependent on the degree of silanol (SiOH) substitution. At lower temperature, 323 K, the amount of SiOH substitution in the proto-imogolite clusters decreases and accordingly reduces the hydrogen bonding among SiOH substituents. In contrast, at higher temperature, 371 K, the large amount of SiOH substitution in the proto-imogolite clusters increases the hydrogen bonding among silanol groups, which also increases the degree of the curvature. The proto-imogolite clusters with a larger curvature can quickly create tubular structures by forming a circle with a smaller diameter.
AB - The diameter of imogolite nanotubes was regulated by altering the synthesis temperature and was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and 29Si cross-polarization magic angle spinning nuclear magnetic resonance (CP-MAS NMR). Imogolite diameter modulation via thermodynamic control was induced by curvature formation of the proto-imogolite cluster, which was dependent on the degree of silanol (SiOH) substitution. At lower temperature, 323 K, the amount of SiOH substitution in the proto-imogolite clusters decreases and accordingly reduces the hydrogen bonding among SiOH substituents. In contrast, at higher temperature, 371 K, the large amount of SiOH substitution in the proto-imogolite clusters increases the hydrogen bonding among silanol groups, which also increases the degree of the curvature. The proto-imogolite clusters with a larger curvature can quickly create tubular structures by forming a circle with a smaller diameter.
UR - http://www.scopus.com/inward/record.url?scp=84898954878&partnerID=8YFLogxK
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U2 - 10.1021/jp411725z
DO - 10.1021/jp411725z
M3 - Article
AN - SCOPUS:84898954878
VL - 118
SP - 8148
EP - 8152
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 15
ER -