Confinement in Carbon Nanospace-Induced Production of KI Nanocrystals of High-Pressure Phase
Journal of the American Chemical Society2011Vol. 133(27), pp. 10344–10347
Citations Over TimeTop 10% of 2011 papers
Koki Urita, Yuichi Shiga, Toshihiko Fujimori, Taku Iiyama, Yoshiyuki Hattori, Hirofumi Kanoh, Tomonori Ohba, Hideki Tanaka, Masako Yudasaka, Sumio Iijima, Isamu Moriguchi, Fujio Okino, Morinobu Endo, Katsumi Kaneko
Abstract
An outstanding compression function for materials preparation exhibited by nanospaces of single-walled carbon nanohorns (SWCNHs) was studied using the B1-to-B2 solid phase transition of KI crystals at 1.9 GPa. High-resolution transmission electron microscopy and synchrotron X-ray diffraction examinations provided evidence that KI nanocrystals doped in the nanotube spaces of SWCNHs at pressures below 0.1 MPa had the super-high-pressure B2 phase structure, which is induced at pressures above 1.9 GPa in bulk KI crystals. This finding of the supercompression function of the carbon nanotubular spaces can lead to the development of a new compression-free route to precious materials whose syntheses require the application of high pressure.
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