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In situ SAXS study on size changes of platinum nanoparticles with temperature

Author(s): W. Wang , X. Chen , Q. Cai , G. Mo , L. S. Jiang , K. Zhang , Z. J. Chen , Z. H. Wu , W. Pan

Publication date (Print): August 2008

Journal: The European Physical Journal B

Publisher: Springer Nature

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Probing the interaction of poly(vinylpyrrolidone) with platinum nanocrystals by UV-Raman and FTIR.

Peidong Yang, Gabor A Somorjai, Catherine Koebel … (2006)

The vibrational spectra of platinum nanoparticles (2.4-9 nm) capped with poly(N-vinylpyrrolidone) (PVP) were investigated by deep UV-Raman and FTIR spectroscopy and compared with those of pure PVP. Raman spectra of PVP/Pt show selective enhancement of C=O, C-N, and CH2 vibrational modes attributed to the pyrrolidone ring. Selective enhancement of ring vibrations is attributed both to the resonance Raman effect and SERS chemical enhancement. A red shift of the PVP carbonyl frequency on the order of 60 cm-1 indicates the formation of strong >C=O-Pt bonds. It is concluded that PVP adheres to the nanoparticles through a charge-transfer interaction between the pyrrolidone rings and surface Pt atoms. Heating the Pt nanoparticles under reducing conditions initiates the decomposition of the capping agent, PVP, at a temperature 100 degrees C below that of pure PVP. Under oxidizing conditions, both PVP/Pt and PVP degrade to form amorphous carbon.

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Size Control of Monodispersed Pt Nanoparticles and Their 2D Organization by Electrophoretic Deposition

T Teranishi, M Hosoe, T. Tanaka … (1999)

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On two methods of determination of particle size distribution functions by means of small-angle X-ray scattering

C. G. Vonk (1976)

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Author and article information

Journal

Title: The European Physical Journal B

Abbreviated Title: Eur. Phys. J. B

Publisher: Springer Nature

ISSN (Print): 1434-6028

ISSN (Electronic): 1434-6036

Publication date Created: September 2008

Publication date (Print): August 2008

Volume: 65

Issue: 1

Pages: 57-64

Article

DOI: 10.1140/epjb/e2008-00322-7

SO-VID: 6a4ee9aa-e7c3-47c9-953e-897b18fd7989

Copyright statement: © 2008

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Self URI (article page): http://www.springerlink.com/index/10.1140/epjb/e2008-00322-7

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