Thermodynamic control of diameter-modulated aluminosilicate nanotubes

Hoik Lee, Yangjun Jeon, Youngil Lee, Sang Uck Lee, Atsushi Takahara, Daewon Sohn

Research output: Contribution to journalArticle

12 Citations (Scopus)

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 languageEnglish
Pages (from-to)8148-8152
Number of pages5
JournalJournal of Physical Chemistry C
Volume118
Issue number15
DOIs
Publication statusPublished - Apr 17 2014

Fingerprint

Aluminosilicates
Nanotubes
nanotubes
Substitution reactions
Thermodynamics
thermodynamics
curvature
Hydrogen bonds
substitutes
Magic angle spinning
Temperature
Fourier transform infrared spectroscopy
cross polarization
hydrogen
Nuclear magnetic resonance
Modulation
Polarization
metal spinning
X ray diffraction
infrared spectroscopy

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 journalArticle

Lee, Hoik ; Jeon, Yangjun ; Lee, Youngil ; Lee, Sang Uck ; Takahara, Atsushi ; Sohn, Daewon. / Thermodynamic control of diameter-modulated aluminosilicate nanotubes. In: Journal of Physical Chemistry C. 2014 ; Vol. 118, No. 15. pp. 8148-8152.
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