36 research outputs found
Pressure-induced amorphization and polyamorphism in one-dimensional single crystal TiO2 nanomaterials
Full text linkThe structural phase transitions of single crystal TiO2-B nanoribbons were
investigated in-situ at high-pressure using the synchrotron X-ray diffraction
and the Raman scattering. Our results have shown a pressure-induced
amorphization (PIA) occurred in TiO2-B nanoribbons upon compression, resulting
in a high density amorphous (HDA) form related to the baddeleyite structure.
Upon decompression, the HDA form transforms to a low density amorphous (LDA)
form while the samples still maintain their pristine nanoribbon shape. HRTEM
imaging reveals that the LDA phase has an {\alpha}-PbO2 structure with short
range order. We propose a homogeneous nucleation mechanism to explain the
pressure-induced amorphous phase transitions in the TiO2-B nanoribbons. Our
study demonstrates for the first time that PIA and polyamorphism occurred in
the one-dimensional (1D) TiO2 nanomaterials and provides a new method for
preparing 1D amorphous nanomaterials from crystalline nanomaterials.Comment: 4 figure
Resolution of Thermal Peaks of Kaolinite in Thermomechanical Analysis and Differential Thermal Analysis Studies
No full textZeolite Molecular Sieve 4Å: A Reusable Catalyst for Fast and Efficient Conversion of Epoxides to Thiiranes with Thiourea
No full textA novel fluid catalytic cracking process for maximizing iso-paraffins: from fundamentals to commercialization
No full textDetailed Structure Elucidation of the Blast Furnace Slag by Molecular Dynamics Simulation
No full textDesign, fabrication and testing of elliptical crystal bender for the EXAFS beam-line at INDUS-II synchrotron source
No full textPower spectrum and scattering properties of three-dimensional disordered systems having a variable degree of short-range order
No full text
