NDLI: Synthesis and characterization of ruthenium dioxide nanostructures

Content Provider	Springer Nature Link
Author	Neupane, S. Kaganas, G. Valenzuela, R. Kumari, L. Wang, X. W. Li, W. Z.
Copyright Year	2011
Abstract	We report the synthesis of ruthenium dioxide (RuO$_{2}$) nanostructures by thermal evaporation of RuO$_{2}$ powder. RuO$_{2}$ nanostructures of different shapes were synthesized at various concentration, flow rate, and pressure of oxygen. At a constant pressure of 3 torr of flowing oxygen, polygonal prism-like RuO$_{2}$ nanorods with flat tips were grown at an O$_{2}$ flow rate of 100 sccm; club-shaped nanorods with obelisk tip were formed at 300 and 600 sccm, and hollow rods with square tip were formed at 1800 sccm. A mixture of O$_{2}$ and Ar at a total flow rate of 600 sccm led to the formation of short club-shaped nanorods indicating the suppression effect of Ar on the growth of nanorods. The pressure also had a significant effect on the formation of RuO$_{2}$ nanostructures, at a fixed flow rate of 600 sccm of O$_{2}$, a pressure of 3 torr resulted in the growth of club-shaped RuO$_{2}$ nanorods, while high pressures of 380 and 760 torr resulted in the formation of both linear club-shaped and pine tree-like hierarchical RuO$_{2}$ nanorods. X-ray diffraction and transmission electron microscopy analysis indicated the formation of tetragonal phase of RuO$_{2}$ with high crystallinity. A density functional calculation on RuO$_{2}$, RuO$_{3}$, and RuO$_{4}$ was performed to help to explain the experimental results.
Starting Page	4803
Ending Page	4811
Page Count	9
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	46
Issue Number	14
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2011-03-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Continuum Mechanics and Mechanics of Materials Mechanics Polymer Sciences Crystallography Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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