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Characterization and Functional Applications of Nanoporous Ag Foams Prepared by Chemical Dealloying

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Abstract

In this study, the pure Ag nanoporous foams, with open cell pore volume fractions 55 to 70 pct and pore sizes 100 to 400 nm, have been prepared by chemical dealloying. The Ag nanoporous foams possess favorable modulus (~0.7 GPa) and strength (~14 MPa), much higher than most of the polymers or ceramic foams. It is found that the Ag nanoporous foams are appropriate candidates for the catalytic and electrode applications. However, they do not exhibit efficient anti-bacterial effect, unless much smaller bacteria with cell sizes of 100 nm or less in the neighborhood are encountered.

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Acknowledgments

The authors gratefully acknowledge the sponsorship from National Science Council of Taiwan, ROC, under the Project No. NSC101-2120-M-110-007. The authors are grateful for the preparation of cast ribbons by J.B. Li and Prof. J.S.C. Jang in National Central University, Taiwan.

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Authors and Affiliations

  1. Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan, ROC

    T. Y. Wu (MS Student), X. Wang (Joint Visiting Professor), J. C. Huang (National Chair Professor), W. Y. Tsai (PhD Student), Y. Y. Chu (MS Student), S. Y. Chen (PhD Student) & X. H. Du (Joint Visiting Professor)

  2. School of Mechanical Engineering, Liaoning Shihua University, Fushun, 113001, P.R. China

    X. Wang (Joint Visiting Professor)

  3. School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang, 110034, P.R. China

    X. H. Du (Joint Visiting Professor)

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  1. T. Y. Wu
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  2. X. Wang
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  3. J. C. Huang
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  4. W. Y. Tsai
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Correspondence to J. C. Huang.

Additional information

Manuscript submitted February 22, 2015.

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Wu, T.Y., Wang, X., Huang, J.C. et al. Characterization and Functional Applications of Nanoporous Ag Foams Prepared by Chemical Dealloying. Metall Mater Trans B 46, 2296–2304 (2015). https://doi.org/10.1007/s11663-015-0392-0

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  • DOI: https://doi.org/10.1007/s11663-015-0392-0

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