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Cu 2 S nanowires and MnS/Cu 2 S nanojunctions derived from γ‐MnS nanowires via selective cation‐exchange reaction
Author(s) -
Xu G.,
Zhu Y. L.,
Ma X. L.
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026124
Subject(s) - nanowire , transmission electron microscopy , materials science , nanotechnology , chemistry , chemical engineering , engineering
Abstract Cu 2 S nanowires and MnS/Cu 2 S junctions have been derived on the basis of γ‐MnS nanowires via cation‐exchange reaction. Relationships between a selective cation exchange and the growth direction of the γ‐MnS nanowires are identified by means of transmission electron microscopy. In the case of γ‐MnS nanowires with [0001] growth direction, Cu + exchange with an initial γ‐MnS nanowire results in a Cu 2 S nanowire. In contrast, for γ‐MnS nanowires with [1–100] growth direction, Cu + exchange leads to a striped MnS/Cu 2 S junction. Mechanisms for this selective cation exchange are proposed.