TY - JOUR
T1 - A study on the synthesis and characterisation of nanocrystalline transition metal oxynitrides
AU - Wang, Yuhong
AU - Lesterb, Edward
AU - Gregory, Duncan H.
N1 - Funding Information:
Acknowledgements The authors would like to Ms N Bock and Dr FJ Allison for assistance with SEM and TEM measurements. DHG and WY would like to thank the Royal Society for awarding WY a Sino-British Fellowship and for funding this work. DHG would also like to thank the EPSRC for the award of an Advanced Research Fellowship.
PY - 2007/8
Y1 - 2007/8
N2 - A different processing route to bimetallic oxynitrides has been developed using oxide precursors generated from coprecipitation of ethanolic solutions of the relevant metal chlorides. The nitridation of the mixed-metal precursors yields nanocrystalline oxynitrides. Representative group 5-group 6 transition metal oxynitrides, M1-x M'x (O,N) (M = Nb, Ta; M' = Mo, W) have been prepared and characterised by powder X-ray diffraction (PXD), scanning electron microscopy with energy dispersive analysis by X-rays (SEM/EDAX), transmission electron microscopy (TEM) with selected area electron diffraction (SAED), BET surface area measurements and SQUID magnetometry. The mixed-metal oxynitrides form rock salt structures (a ∼4.3 Å) with disordered distributions of both cations and anions. The purity, particle size and surface area of materials are significantly dependent on nitridation temperature.
AB - A different processing route to bimetallic oxynitrides has been developed using oxide precursors generated from coprecipitation of ethanolic solutions of the relevant metal chlorides. The nitridation of the mixed-metal precursors yields nanocrystalline oxynitrides. Representative group 5-group 6 transition metal oxynitrides, M1-x M'x (O,N) (M = Nb, Ta; M' = Mo, W) have been prepared and characterised by powder X-ray diffraction (PXD), scanning electron microscopy with energy dispersive analysis by X-rays (SEM/EDAX), transmission electron microscopy (TEM) with selected area electron diffraction (SAED), BET surface area measurements and SQUID magnetometry. The mixed-metal oxynitrides form rock salt structures (a ∼4.3 Å) with disordered distributions of both cations and anions. The purity, particle size and surface area of materials are significantly dependent on nitridation temperature.
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U2 - 10.1007/s10853-006-1464-y
DO - 10.1007/s10853-006-1464-y
M3 - Article
AN - SCOPUS:34547252493
SN - 0022-2461
VL - 42
SP - 6779
EP - 6786
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 16
ER -