Interaction in Co–C System: Effect of Co Loading

• Autorzy: Potoczna-Petru D. , Krajczyk L.
• Języki publikacji: EN

Abstrakty

EN

The interaction of 1 and 4 nm thick cobalt films with amorphous carbon support was investigated by transmission electron microscopy and electron diffraction. The samples were annealed in flowing hydrogen at 300–500°C. It was established that after heating at 350°C discrete particles ormaze-like structure were formed in 1 nmand 4 nmthick films, respectively. The differences in the film morphology ensue from specific thermodynamic properties of the dispersed phase. In both systems formation of Co2C and Co3C carbides was detected after heating at 350 and 400°C. Decomposition of carbides took place following heating at 500°C.

Słowa kluczowe

EN

Co thin films; electron microscopy; Co–C interaction; Co2C; Co3C

PL

Potoczna-Petru, D.

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2007
• Tom: Vol. 81, nr 1
• Strony: 61--67
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Potoczna-Petru D.

autor

Krajczyk L.

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50-950 Wrocław 2, Poland

Bibliografia

• l. Iglesia E., Appl. Catal. A, 161, 59 (1997).
• 2. Bethune D.S., Klang C.H., De Vries M.S., Gorman G., Savoy R. Vazques J. and Beyers R., Nature, 363,605(1993).
• 3. Homma Y., Kobayashi Y., Ogino T., Takagi D., Ito R., Jung Y J. and Ajayan RM., J. Phys. Chem. B, 107, 12161 (2003).
• 4. Chen Y, Ciuparu D., Lim S., Yang Y, Haller G.L. and Pfefferle L., J. Catal., 225, 453 (2004).
• 5. Khassin A.A., YurievaT.M., Zaikovskii V. I. And Parmon V.N.,React. Kinet. Catal. Lett.,64,63 (1998).
• 6. Ando Y, Zhao X., Sugai T. and Kumar M., Materials Today, October, 22 (2004).
• 7. Xiong J., Ding Y, Wang T., Yan L., Chen W., Zhu H. and Lu Y, Catal. Lett., 102, 265 (2005).
• 8. Potoczna-Petru D., Carbon, 29, 73 (1991).
• 9. Potoczna-Petru D., Mater. Chem. Phys., 55, 224 (1998).
• 10. Potoczna-Petru D. and Krajczyk L., Carbon, 31, 2067 (1999).
• 11. Nagakura S., J. Phys. Soc. Jap., 16, 1213 (1961).
• 12. Delaunay J.J., Hayashi T, Tomida M. and Hirono S., J. Appl. Phys., 82, 2200 (1997).
• 13. Yin J.S. and Wang Z.L., J. Phys. Chem. B, 101, 8979 (1997).