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Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism

Publication ,  Journal Article
Cho, J; Lin, Q; Yang, S; Jr, JGS; Cheng, Y; Lin, E; Yang, J; Foreman, JV; Everitt, HO; Yang, W; Kim, J; Liu, J
Published in: Nano Research
2012

We present a bottom-up synthesis, spectroscopic characterization, and ab initio simulations of star-shaped hexagonal zinc oxide (ZnO) nanowires. The ZnO nanostructures were synthesized by a low-temperature hydrothermal growth method. The cross-section of the ZnO nanowires transformed from a hexagon to a hexagram when sulfur dopants from thiourea [SC(NH 2) 2] were added into the growth solution, but no transformation occurred when urea (OC(NH 2) 2) was added. Comparison of the X-ray photoemission and photoluminescence spectra of undoped and sulfur-doped ZnO confirmed that sulfur is responsible for the novel morphology. Large-scale theoretical calculations were conducted to understand the role of sulfur doping in the growth process. The ab initio simulations demonstrated that the addition of sulfur causes a local change in charge distribution that is stronger at the vertices than at the edges, leading to the observed transformation from hexagon to hexagram nanostructures. © 2012 Tsinghua University Press and Springer-Verlag Berlin Heidelberg.

Duke Scholars

Published In

Nano Research

DOI

ISSN

1998-0124

Publication Date

2012

Volume

5

Issue

1

Start / End Page

20 / 26

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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Cho, J., Lin, Q., Yang, S., Jr, J. G. S., Cheng, Y., Lin, E., … Liu, J. (2012). Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism. Nano Research, 5(1), 20–26. https://doi.org/10.1007/s12274-011-0180-3
Cho, J., Q. Lin, S. Yang, J. G. S. Jr, Y. Cheng, E. Lin, J. Yang, et al. “Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism.” Nano Research 5, no. 1 (2012): 20–26. https://doi.org/10.1007/s12274-011-0180-3.
Cho J, Lin Q, Yang S, Jr JGS, Cheng Y, Lin E, et al. Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism. Nano Research. 2012;5(1):20–6.
Cho, J., et al. “Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism.” Nano Research, vol. 5, no. 1, 2012, pp. 20–26. Scival, doi:10.1007/s12274-011-0180-3.
Cho J, Lin Q, Yang S, Jr JGS, Cheng Y, Lin E, Yang J, Foreman JV, Everitt HO, Yang W, Kim J, Liu J. Sulfur-doped zinc oxide (ZnO) Nanostars: Synthesis and simulation of growth mechanism. Nano Research. 2012;5(1):20–26.
Journal cover image

Published In

Nano Research

DOI

ISSN

1998-0124

Publication Date

2012

Volume

5

Issue

1

Start / End Page

20 / 26

Related Subject Headings

  • Nanoscience & Nanotechnology