Abstract
In the present work, for the first time, the inorganic Si-based materials lacking preexisting mixed bonds (O-Si-C, silicon in tetrahedral coordination bonded to both carbon and oxygen) have been successfully used as starting materials in a laser evaporation/condensation system for making hydrogenated silicon oxycarbide (Si-O-C-H) nanoparticles containing mixed bonds. The obtained materials are characterized by spectroscopic, microscopic, and calorimetric measurements. Thermodynamically stable 5-10 nm amorphous Si-O-C-H particles with a complex structure containing a combination of pure and mixed Si-based tetrahedral units (SiO iC4-i; i = 0-4), and a considerable amount of Si-OH and C-H bonds have been synthesized. The nanoparticles possess high surface areas (428-467 m2/g), suggesting potential use in functionalities requiring high surface to volume ratios. In addition, making thermodynamically stable Si-O-C-H ceramics using a pathway different from the polymer route raises the likelihood of formation of similar carbon containing compounds in the planetary accretion and the Earth's interior.
Original language | English (US) |
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Pages (from-to) | 295-303 |
Number of pages | 9 |
Journal | Journal of Materials Research |
Volume | 30 |
Issue number | 2 |
DOIs | |
State | Published - Dec 3 2014 |
Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering