- Title
- Synchrotron based NEXAFS study on nitrogen doped hydrothermalcarbon: insights into surface functionalities and formation mechanisms
- Creator
- Latham, Kenneth G.; Simone, Michela I.; Dose, Wesley M.; Allen, Jessica A.; Donne, Scott W.
- Relation
- Carbon Vol. 114, Issue April, p. 566-578
- Publisher Link
- http://dx.doi.org/10.1016/j.carbon.2016.12.057
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2017
- Description
- Synchrotron-based Near-Edge X-ray Absorption Fine Structure (NEXAFS) studies have been conducted on two hydrothermally produced carbon (HTC) structures and their main surface structural features are reported. The two HTCs were produced respectively from sucrose, and sucrose with added (NH₄)₂SO₄, under subcritical water conditions. The NEXAFS carbon K-edge spectra reveal the presence of C=C, C-O-C (furan), C=O and C-OH functionalities on the surface of the sucrose derived HTC. For the nitrogen-doped HTC, the carbon K-edge spectra indicate an increase in C=C and C-OH functionalities, as well as the inclusion of C-N and C=N functionalities. Additionally, the nitrogen K-edge for the doped hydrothermal carbon displayed characteristic peaks for pyridinic, pyrrolic and tertiary amine nitrogen surface groups. Furthermore, a mechanistic pathway to inclusion of nitrogen atoms in the HTC-SAS structure is postulated.
- Subject
- synchrotron; near-edge x-ray absorption fine structure; hydrothermally produced carbon structures; hydrothermal carbon
- Identifier
- http://hdl.handle.net/1959.13/1393426
- Identifier
- uon:33542
- Identifier
- ISSN:0008-6223
- Language
- eng
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