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Title: Metal Structural Environment in Zn xNi 1-xO Macroscale and Nanoscale Solid Solutions

Abstract

The metal structural environments in macroscale and nanoscale Zn xNi 1–xO solid solutions were examined using X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), and X-ray photoelectron spectroscopy (XPS). XRD demonstrates that solid solutions form for both macroscale (bulk) and nanoscale crystallites, and that the lattice parameter increases linearly as the amount of zinc increases, an indication of a homogeneous solid solution. XAS for both the bulk material and the nanoparticles reveals that the zinc atoms are incorporated into the rocksalt lattice and do not form zinc oxide clusters. The X-ray absorption near edge spectroscopy (XANES) of the Zn k-edge region in the solid solution is similar to the Ni k-edge region of NiO, and not the Zn k-edge region of ZnO. XPS confirms that solid solutions are formed; Auger parameters for zinc are consistent with a different geometry than the tetrahedral coordination of wurtzite ZnO. Nanoscaled solid solutions show evidence of a lattice contraction relative to macroscale solutions of the same concentration. While the contraction persists across the entire concentration range, the nanoparticle lattice parameter approaches the bulk Zn xNi 1–xO value as the concentration of zinc increases to predict ZnO rocksalt lattice parameters that are in agreement with observedmore » ZnO data.« less

Authors:
;  [1]
  1. UNL
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
National Science Foundation (NSF)
OSTI Identifier:
1149173
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Phys. Chem. C; Journal Volume: 118; Journal Issue: (22) ; 06, 2014
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Peck, Matthea A., and Langell, Marjorie A. Metal Structural Environment in ZnxNi1-xO Macroscale and Nanoscale Solid Solutions. United States: N. p., 2014. Web. doi:10.1021/jp502866m.
Peck, Matthea A., & Langell, Marjorie A. Metal Structural Environment in ZnxNi1-xO Macroscale and Nanoscale Solid Solutions. United States. doi:10.1021/jp502866m.
Peck, Matthea A., and Langell, Marjorie A. Thu . "Metal Structural Environment in ZnxNi1-xO Macroscale and Nanoscale Solid Solutions". United States. doi:10.1021/jp502866m.
@article{osti_1149173,
title = {Metal Structural Environment in ZnxNi1-xO Macroscale and Nanoscale Solid Solutions},
author = {Peck, Matthea A. and Langell, Marjorie A.},
abstractNote = {The metal structural environments in macroscale and nanoscale ZnxNi1–xO solid solutions were examined using X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), and X-ray photoelectron spectroscopy (XPS). XRD demonstrates that solid solutions form for both macroscale (bulk) and nanoscale crystallites, and that the lattice parameter increases linearly as the amount of zinc increases, an indication of a homogeneous solid solution. XAS for both the bulk material and the nanoparticles reveals that the zinc atoms are incorporated into the rocksalt lattice and do not form zinc oxide clusters. The X-ray absorption near edge spectroscopy (XANES) of the Zn k-edge region in the solid solution is similar to the Ni k-edge region of NiO, and not the Zn k-edge region of ZnO. XPS confirms that solid solutions are formed; Auger parameters for zinc are consistent with a different geometry than the tetrahedral coordination of wurtzite ZnO. Nanoscaled solid solutions show evidence of a lattice contraction relative to macroscale solutions of the same concentration. While the contraction persists across the entire concentration range, the nanoparticle lattice parameter approaches the bulk ZnxNi1–xO value as the concentration of zinc increases to predict ZnO rocksalt lattice parameters that are in agreement with observed ZnO data.},
doi = {10.1021/jp502866m},
journal = {J. Phys. Chem. C},
number = (22) ; 06, 2014,
volume = 118,
place = {United States},
year = {Thu Aug 21 00:00:00 EDT 2014},
month = {Thu Aug 21 00:00:00 EDT 2014}
}