[Zurück]

D. Hauser, A. Auer, J. Kunze-Liebhäuser, S. Schwarz, J. Bernardi, S. Penner:
"Hybrid synthesis of zirconium oxycarbide nanopowders with defined and controlled composition";
RSC Advances, 9 (2019), S. 3151 - 3156.

A combined synthesis strategy involving a carbothermal reduction and gelation approach with glycine as
gelating agent was used to obtain Zr-based (oxy)carbide materials with defined and controlled
composition. A comparatively low temperature approach (1500 C) allows exploration of the ZrC-ZrO2
phase diagram and reproducibly leads to zirconium (oxy)carbide phases with different C/Zr ratios, as
confirmed by combined X-ray diffraction (XRD) and transmission electron microscopy (TEM) data. The
latter also indicates a chemically very homogeneous distribution of oxygen and carbon throughout the
sample bulk, a prerequisite for further characterization of its intrinsic physico-chemical properties. Due
to the general variability of the synthesis procedure - variation of metal precursor, amount of gelating
agent and carbon precursor source - it is expected that the method can be easily adapted and
transferred to other metal - oxycarbide materials.

http://dx.doi.org/10.1039/c8ra09584a