Electrical conductivity changes of water-adsorbed nanodiamonds with thermal treatment
| Autor: | Eiji Ōsawa, Toshio Sakai, Kento Sagisaka, Yoshiyuki Hattori, Elda-Zoraida Piña-Salazar, Ryusuke Futamura, Katsumi Kaneko |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Detonation lcsh:QD450-801 General Physics and Astronomy chemistry.chemical_element Diamond lcsh:Physical and theoretical chemistry Thermal treatment engineering.material Isothermal process lcsh:QC1-999 Adsorption chemistry Chemical engineering Electrical resistivity and conductivity engineering Physical and Theoretical Chemistry Nanodiamond Carbon lcsh:Physics |
| Zdroj: | Chemical Physics Letters: X, Vol 2, Iss, Pp-(2019) |
| ISSN: | 2590-1419 |
| Popis: | Detonation nanodiamonds hard-hydrogels are aggregates of polyhedral particles of sp3-hybridized-carbon coated by atomically thin sp2-hybridized carbon. Electronic properties of diamond are sensitive to water in the surrounding environment. The effect of adsorbed water on the electrical conductivity of detonation nanodiamonds was studied by exposure to humid air after thermal treatment in vacuo. The electrical conductivity increases with heating and decreases during the isothermal treatment at 393 K due to release of strongly adsorbed water, and gradually increases on exposing to humid air, indicating adsorption of water molecules on micropores and mesopores in the nanodiamond aggregates. Keywords: Nanodiamonds, Electrical conductivity, Adsorbed water, Micropore, Graphene-like carbon |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|