Journal article
Thermochemistry of nanodiamond terminated by oxygen containing functional groups
Carbon (New York), v 80(1), pp 544-550
Dec 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The standard enthalpies of formation at 25°C of nanodiamonds terminated by oxygen containing functional groups have been investigated by high-temperature oxidation calorimetry. Depending on the amount of oxygen containing functional groups, the nanodiamonds (plus oxygen and hydrogen as represented in the surface functional groups) can be up to 52kJmol−1 more stable in enthalpy than graphite, which means that less heat is evolved during oxidation of nanodiamonds terminated by oxygen containing functional groups, since their surface carbon is already partially oxidized. The stability of the nanodiamonds terminated by oxygen containing functional groups increases (enthalpy of formation becomes more negative) with increasing surface area within the studied range, reflecting the dominant effect of higher content of surface functional groups over the destabilizing effect of higher surface-to-volume ratio typical for nanoparticles.
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Details
- Title
- Thermochemistry of nanodiamond terminated by oxygen containing functional groups
- Creators
- Gustavo C.C Costa - Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, CA 95616, USAOlga Shenderova - Nanodiamond Laboratory, International Technology Center, 8100 Brownleigh Dr., S. 120, Raleigh, NC 27617, USAVadym Mochalin - Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAYury Gogotsi - Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAAlexandra Navrotsky - Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, CA 95616, USA
- Publication Details
- Carbon (New York), v 80(1), pp 544-550
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000344132400059
- Scopus ID
- 2-s2.0-84909944371
- Other Identifier
- 991014969879204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary