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Quantitatively in Situ Imaging Silver Nanowire Hollowing Kinetics

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journal contribution
posted on 2016-09-28, 00:00 authored by Le Yu, Zhongying Yan, Zhonghou Cai, Dongtang Zhang, Ping Han, Xuemei Cheng, Yugang Sun
We report the in situ investigation of the morphological evolution of silver nanowires to hollow silver oxide nanotubes using transmission X-ray microscopy (TXM). Complex silver diffusion kinetics and hollowing process via the Kirkendall effect have been captured in real time. Further quantitative X-ray absorption analysis reveals the difference between the longitudinal and radial diffusions. The diffusion coefficient of silver in its oxide nanoshell is, for the first time, calculated to be 1.2 × 10–13 cm2/s from the geometrical parameters extracted from the TXM images.

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