The Heat Treatment of Nanocrystalline Cu2O to Enhance the Catalytic Effect at the Surface Layer

Young Rang Uhm; Byung Sun Han; Min Ku Lee; Chang Kyu Rhee

doi:10.4028/www.scientific.net/SSP.118.635

Paper Titles

Study On Nano-Structured SnO₂-23wt%TiO₂-21wt%RuO₂ Coated Titanium Anode
p.603

The Ultra Fine Grained (UFG) Zn Produced by Ball Milling
p.609

Consolidation of Al₂O₃ Nanopowder by Magnetic Pulsed Compaction and Sintering
p.615

Microstructural Characterization of the Emulsified Cu₄₇Ti₃₃Zr₁₁Ni₆Sn₂Si₁ Alloy Powder
p.623

The Heat Treatment of Nanocrystalline Cu₂O to Enhance the Catalytic Effect at the Surface Layer
p.635

The Characteristic Evaluation of Hydroxyapatite Powders Synthesized from CaCO₃ Refined from Oyster Shell and H₃PO₄
p.639

Nanostructure Formation of Amorphous Al-Ni-Mm Alloy
p.645

Investigation of the Particle Size Effect on the Peritectic Melting of FeSn₂ Particles in FeSn₂-FeSn Nanocomposites
p.651

Production of Cu-Hf-Ti Bulk Glassy Composites by Mechanical Alloying and Spark-Plasma Sintering
p.655

HomeSolid State PhenomenaSolid State Phenomena Vol. 118The Heat Treatment of Nanocrystalline Cu2O to...

The Heat Treatment of Nanocrystalline Cu₂O to Enhance the Catalytic Effect at the Surface Layer

Abstract:

Cu oxide nano powders were synthesized by the levitational gas condensation (LGC) method, and heated at temperature ranges from 150 to 450 C. The nano powders consist of mainly Cu2O with an average size of 35 nm. The analysis of the IR-spectra of the nanopowders demonstrates that the surface of the sample under an air exposure is coated by hydroxylhydride (-OH, H2O) and hydroxycarbonated [Cu2(OH)2CO3]. The change of the particle size by heat treatment below 450 °C is relatively small. The variation of the adsorption ability is mainly defined under heating at least up to 300 °C, by the surface state of the particles. The catalytic effect was increased at heat treated samples.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 118)

Pages:

635-638

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.118.635

Citation:

Cite this paper

Online since:

December 2006

Authors:

Young Rang Uhm, Byung Sun Han, Min Ku Lee, Chang Kyu Rhee

Keywords:

Catalytic Effect, Cu₂O, Levitational Gas Condensation (LGC)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] K. E. Gonsalves, S. P. Rangarajan and J. Wang : in Handbook of Nanostructured Materials and Nanotechnology, edited by H. S. Nalwa, (Academic Press, San Diego 2000).

Google Scholar

[2] R. W. Siegel : MRS Bull., 15 (1990) p.60.

Google Scholar

[3] S. Vemury, S. E. Pratsinis and L. Kibbery : J. Mater. Res., 12 (1997) p.1031.

Google Scholar

[4] Z. Wang, X. Chen, J. Liu, M. Mo, L. Yang and Y. Qian : Sol. Stat. Comm., 130 (2004), p.585.

Google Scholar

[5] A. Ye. Yermakov, T. A. Feduschak, M. A. Uimin, A. A. Mysik: J. Magn. Magn. Mat. 272-275 (2004) p.2445.

Google Scholar

[6] P.G. Clem, M. Rodriguez, J.A. Voigt and C.S. Ashley, U.S. Patent 6, 231, 666 (2001).

Google Scholar

[7] Y. R. Uhm, W. W. Kim, and C. K. Rhee : Phys. Stat. Sol. A, 201 (2004) p. (1934).

Google Scholar

[8] R. Wyckoff, Crystal Structures, Interscience publishers. Vol 1(1965).

Google Scholar

[9] A. Ye. Yermakov, T. A. Feduschak, M. A. Uimin, A. A. Mysik, V. S. Gaviko, O. N. Chupakin, A. B. Shishmakov, V. G. Kharchuk, L. A. Petrov, Y. A. kotov, A. V. Vosmerikov and A. V. Korolyov : Solid Stat. Ionics, 172 (2004) p.317.

Google Scholar