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Issue 39, 2014
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X-ray irradiation induced reduction and nanoclustering of lead in borosilicate glass

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Abstract

We have studied the formation of nanoparticles in lead sulfide (PbS)-doped borosilicate glass subjected to a two-step nucleation and growth heat treatment using in situ small-angle X-ray scattering (SAXS). The microstructure produced was subsequently characterized using X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). While PbS nanocrystals of ca. 2 nm diameter are formed throughout the sample during the heat treatment, larger monodisperse Pb nanocrystals (diameter ca. 50 nm) are formed due to exposure to the X-ray beam, yielding space-selective nanoparticle growth. Time-resolved SAXS spectra are in the early stages consistent with diffusion-limited growth of the Pb particles. We attribute the X-ray-induced formation of nanocrystalline Pb to X-ray photoreduction of the Pb2+ atoms.

Graphical abstract: X-ray irradiation induced reduction and nanoclustering of lead in borosilicate glass

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Supplementary files

Article information


Submitted
02 May 2014
Accepted
12 Aug 2014
First published
12 Aug 2014

This article is Open Access

CrystEngComm, 2014,16, 9331-9339
Article type
Paper
Author version available

X-ray irradiation induced reduction and nanoclustering of lead in borosilicate glass

H. B. Stanley, D. Banerjee, L. van Breemen, J. Ciston, C. H. Liebscher, V. Martis, D. H. Merino, A. Longo, P. Pattison, G. W. M. Peters, G. Portale, S. Sen and W. Bras, CrystEngComm, 2014, 16, 9331
DOI: 10.1039/C4CE00937A

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