Abstract
A metal nanoparticle is one of the interesting subjects of the nanoscience and nanotechnology because of its bizarre physical and chemical properties which are way different from those of bulk metal. One interesting question is whether metal nanoparticles are metallic or not. We have performed 1H NMR experiments on silver and gold nanoparticles to check the metallic behavior. Measured spectra are composed of two Gaussian lines and the shift of one line is inferred as a Knight shift. The nuclear spin–lattice relaxation curves are measured and the Korringa relation is investigated. We find that the surface of silver nanoparticles does not show Korringa behavior at low temperatures implying that silver nanoparticle, at least its surface, is non-metallic at low temperatures.
Similar content being viewed by others
References
J. Blackman, Metallic nanoparticles (Elsevier Science, Amsterdam, 2008)
S. Thota, D.C. Crans, Metal nanoparticles: synthesis and applications in pharmaceutical sciences (Wiley-VCH, Weinheim, 2018)
W.P. Halperin, I. Yu, Mat. Res. Soc. Symp. Proc. 111, 79 (1987)
D.C. Ralph, C.T. Black, M. Tinkham, Phys. Rev. Lett. 78, 4087 (1997)
D.G. Salinas, S. Guéron, D.C. Ralph, C.T. Black, M. Tinkham, Phys. Rev. B 60, 6137 (1999)
P. Yee, W.D. Knight, Phys. Rev. B 11, 3261 (1975)
L.E. Marbella, J.E. Millstone, Chem. Mater. 27, 2721 (2015). (and references therein)
D. Kölbl, D.M. Zumbühl, A. Fuhrer, G. Salis, S.F. Alvarado, Phys. Rev. Lett. 109, 086601 (2012)
Y.J. Tong, B.S. Zelakiewicz, B.M. Dy, A.R. Pogozelski, Chem. Phys. Lett. 406, 137 (2005)
D. van der Putten, H. B. Brom, J. Witteveen, L. J. de Jongh, G. Z. Schmid, Phys. D, At. Mol. Clusters 26, 21 (1993)
C.P. Slichter, Annu. Rev. Phys. Chem. 37, 25 (1986)
S.L. Rudaz, J.-P. Ansermet, P.-K. Wang, C.P. Slichter, J.H. Sinfelt, Phys. Rev. Lett. 54, 71 (1985)
A.L. MacKay, Biophys. J. 35, 301 (1981)
G.C. Carter, L.H. Bennett, D.J. Kahan, Metallic shifts in NMR (Pergamon Press, Oxford, 1977)
B. Reif, S.E. Ashbrook, L. Emsley, M. Hong, Nat. Rev. Methods Primers 1, 4 (2021)
E. Fukushima, S.B.W. Roeder, Experimental pulse NMR: a nuts and bolts approach (CRC Press, Boca Raton, 2018)
P.K. Wang, J.P. Ansermet, S.L. Rudaz, Z. Wang, S. Shore, C.P. Slichter, J.H. Sinfelt, Science 234, 35 (1986)
Acknowledgements
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A1A01058895).
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Jang, Z.H. Investigation of the metallic property of noble metal nanoparticles with 1H solid-state NMR. J. Korean Phys. Soc. 81, 428–433 (2022). https://doi.org/10.1007/s40042-022-00581-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40042-022-00581-0