Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-28T01:26:20.203Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of presynthesis of Ta precursor on the formation of Ta nitrides

Published online by Cambridge University Press:  31 January 2011

Jong-Chul Park ,
Jae-Hwan Pee  and
Hyung-Ho Park
Jong-Chul Park
Affiliation:
Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Korea; and Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
Jae-Hwan Pee
Affiliation:
Ceramicware Technology Center, Korea Institute of Ceramic Engineering and Technology, Icheon, Korea
Hyung-Ho Park*
Affiliation:
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
*
a)Address all correspondence to this author. e-mail: hhpark@yonsei.ac.kr
Get access

Abstract

We synthesized Ta3N5 by ammonolysis of Ta(OH)5. Ta(OH)5 was prepared by titration using TaCl5. The stirring speed and the amount of NH4OH to be added were important factors for controlling the particle size and formation of Ta(OH)5 during titration. During transformation of Ta(OH)5 to Ta3N5, the color changed from white to red. A small particle size and high level of formation of Ta(OH)5 improved nitridation, which was related to the color value. An x-ray diffractometer was used for phase identification. A scanning electron microscope was used to determine the microstructure, particle shape, and size. A colorimeter was used to obtain CIELab values. Ultraviolet–visible (UV–VIS) spectroscopy was carried out to determine the absorbance of colored powders. Thermogravimetry and a differential scanning calorimeter were used in air with a heating rate of 5 °C/min for thermal stability and behavior. An ON detector was used for detecting oxygen and nitrogen contents in Ta3N5.

Keywords

NitrideOptical propertiesPowder processing
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 5 , May 2010 , pp. 835 - 841
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Jansen, M., Letschert, H.P.Inorganic yellow-red pigments without toxic metals. Nature 404, 980 (2000)CrossRefGoogle ScholarPubMed
2.Gardea-Torresdey, J.L., Gonzalez, J.H., Tiemann, K.J., Rodriguez, O., Gamez, G.Phytofiltration of hazardous cadmium, chromium, lead and zinc ions by biomass of Medicago sativa (Alfalfa). J. Hazard. Mater. 57, 29 (1998)Google Scholar
3.Katsuki, H., Komarneni, S.Role of α-Fe2O3 morphology on the color of red pigment for porcelain. J. Am. Ceram. Soc. 86, 183 (2003)Google Scholar
4.Swapan, K.M., Nicolas, L., Benjamin, R., Marc, T., Jacques, F., Jerome, B., Benoit, D.Encapsulation of magnetic and fluorescent nanoparticles in emulsion droplets. Langmuir 21, (9)4175 (2005)Google Scholar
5.Orhan, E., Tessier, F., Marchand, R.Synthesis and energetic of yellow TaON. Solid State Sci. 4, 1071 (2002)Google Scholar
6.Zhang, Q., Gao, L.Ta3N5 nanoparticles with enhanced photocatalytic efficiency under visible light irradiation. Langmuir 20, 9821 (2004)Google Scholar
7.Lu, D., Hitoki, G., Katou, E., Kondo, J., Hara, M., Domen, K.Porous single-crystalline TaON and Ta3N5 particles. Chem. Mater. 16, 9 (2004)Google Scholar
8.Henderson, S.J., Hector, A.L.Structural and compositional variation in Ta3N5 produced by high-temperature ammonolysis of tantalum oxide. J. Solid State Chem. 179, 3518 (2006)Google Scholar
9.Kerlau, M., Merdrignac-Conanec, O., Guilloux-Viry, M., Perrin, A.Synthesis of crystallized TaON and Ta3N5 by nitridation of Ta2O5 thin films grown by pulsed laser deposition. Solid State Sci. 6, 101 (2004)Google Scholar
10.Yörükoglu, A., Girgin, I.Dissolution of La2O3 in HCl–H2O, HCl–CH3OH–H2O and HCl–CH3OH solutions. Hydrometallurgy 61, 185 (2001)Google Scholar
11.Hunter, H.S.Photoelectric color-difference meter. JOSA 38, (7)661 (1948)Google Scholar
12.Hunter, H.S.Accuracy, precision, and stability of new photo-electric color-difference meter JOSA 38, (12)1094 (1948)Google Scholar
13.Bertaux, S., Reynders, P., Heintz, J.M., Lerch, M.New (oxy)nitride pearlescent pigments. Mater. Sci. Eng., B 121, (1–2)137 (2005)Google Scholar
14.Munsell, A.H.A pigment color system and notation. Am. J. Psychol. 23, 236 (1912)Google Scholar
15.Harold, P.K., Leroy, E.A.X-ray Diffraction Procedures (Wiley-Interscience, New York 1973)139Google Scholar