Shape-selective synthesis and oxygen storage behavior of ceria nanopolyhydra, nanorods, and nanocubes

Article Abstract:

Single-crystalline and uniform CeO2 nanopolyhedra, nonorods, nanocubes were selectively synthesized through hydrothermal method and changing NaOH concentration and reaction temperature using Ce(III) salt as cerium source to obtain CeO2 nanocrystals with different exposed crystal planes for nanopolyhydra, nanorods, and nanocubes. Oxygen storage capacity (OSC) measurements at 400 degree C revealed that oxygen storage takes place both at the surface and in the bulk for as-obtained CeO2 nanorods and nanocubes but is restricted at the surface for nanopolyhedra just like bulk thus helping to design and obtain high OSC materials by shape-selective strategy.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Cerium & Compounds, Usage, Oxides, Transmission electron microscopes, Structure, Cerium

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Phase evolution, texture behavior, and surface chemistry of hydrothermally derived scandium (hydrous) oxide nanostructures

Article Abstract:

The phase evolution, texture behavior, and surface chemistry of nanostructured scandium (hydrous) oxides hydrothermally synthesized under various basic conditions are presented. An olation-oxidation process based on a dissolution/recrystallization mechansim is proposed to explain the formation of various ScOOH polymorphs and Sc(OH)3 with different shapes.

Science & research, Research, Chemical synthesis, Scandium

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