Spontaneous self-organization of Cu2O/CuO core–shell nanowires from copper nanoparticles

We report on the formation and spontaneous self-organization of Cu(2)O/CuO core-shell nanowires from individual copper nanoparticles. The growth process is interpreted using the results of time-dependent in situ x-ray diffraction. High-resolution transmission electron microscopy is used to observe t...

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Bibliographic Details
Published inNanotechnology Vol. 21; no. 4; p. 045603
Main Authors Ji, Jhong-Yi, Shih, Po-Hsun, Yang, Chun Chuen, Chan, Ting Shan, Ma, Yuan-Ron, Wu, Sheng Yun
Format Journal Article
LanguageEnglish
Published England IOP Publishing 29.01.2010
Subjects
Aggregates
COMPUTER SIMULATION
Copper
COPPER OXIDE
CUPROUS OXIDE
Diffraction
MICROWIRE
Nanoparticles
Nanowires
PARTICLES
Shells
Spontaneous
X RAYS
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Summary:We report on the formation and spontaneous self-organization of Cu(2)O/CuO core-shell nanowires from individual copper nanoparticles. The growth process is interpreted using the results of time-dependent in situ x-ray diffraction. High-resolution transmission electron microscopy is used to observe the intermediate state of pearl-necklace-like aggregates that form a chain-like configuration of Cu(2)O nanoparticles intertwined into nanowires. The existence of an amorphous CuO shell is confirmed by the XANES technique and explained through an intensity simulation using a proposed core-shell nanowire model.
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ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/21/4/045603