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Electron microscopy of Ag–(Ni–O) core–shell nanowires
Author(s) -
SINGH M. PRATAP,
M Y REKHA,
RAGHUPATHY Y.,
SRIVASTAVA C.
Publication year - 2014
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/jmi.12149
Subject(s) - nanowire , materials science , template , nanocrystalline material , shell (structure) , scanning electron microscope , nanotechnology , electron microscope , chemical engineering , core (optical fiber) , transmission electron microscopy , crystallography , composite material , chemistry , optics , physics , engineering
Summary This report provides information about an electrodeposition‐based two‐step synthesis methodology for producing core–shell Ag–(Ni–O) nanowires and their detailed structural and compositional characterization using electron microscopy technique. Nanowires were produced by employing anodic alumina templates with a pore diameter of 200 nm. In the first step of the synthesis process, nanocrystalline Ni–O was electrodeposited in a controlled manner such that it heterogeneously nucleated and grew only on the template pore walls without filling the pores from bottom upwards. This alumina template with pore walls coated with Ni–O was then utilized as a template during the electrodeposition of Ag in the second step. Electrodeposited Ag filled the template pores to finally produce Ag–(Ni–O) core–shell nanowires with an overall diameter of 200 nm.