Crystal structure of polymeric carbon nitride and the determination of its process-temperature-induced modifications

Based on the arrangement of two-dimensional 'melon', we construct a unit cell for polymeric carbon nitride (PCN) synthesized via thermal polycondensation, whose theoretical diffraction powder pattern includes all major features measured in x-ray diffraction. With the help of this unit cell...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2013-10, Vol.25 (39), p.395402-395402
Main Authors: Tyborski, T, Merschjann, C, Orthmann, S, Yang, F, Lux-Steiner, M-Ch, Schedel-Niedrig, Th
Format: Article
Language:English
Subjects:
Carbon nitride
Condensed matter
Condensed matter: structure, mechanical and thermal properties
Crystal structure
Diffraction patterns
Exact sciences and technology
Inorganic compounds
PCN
Phases
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Unit cell
X-rays
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Summary:Based on the arrangement of two-dimensional 'melon', we construct a unit cell for polymeric carbon nitride (PCN) synthesized via thermal polycondensation, whose theoretical diffraction powder pattern includes all major features measured in x-ray diffraction. With the help of this unit cell, we describe the process-temperature-induced crystallographic changes in PCN that occur within a temperature interval between 510 and 610 °C. We also discuss further potential modifications of the unit cell for PCN. It is found that both triazine- and heptazine-based g-C3N4 can only account for minor phases within the investigated synthesis products.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/25/39/395402