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Morphological Evolution of ZnAl-Layered Double Hydroxide Nanostructures Grown on Al2O3/Si Substrate

Title
Morphological Evolution of ZnAl-Layered Double Hydroxide Nanostructures Grown on Al2O3/Si Substrate
Authors
Baek, SH[Baek, Seong-Ho]Nam, KH[Nam, Kwang-Hee]Park, IK[Park, Il-Kyu]
DGIST Authors
Baek, SH[Baek, Seong-Ho]
Issue Date
2016-11
Citation
Science of Advanced Materials, 8(11), 2142-2146
Type
Article
Article Type
Article
Keywords
Atomic Layer DepositionHydroxide ReactionMolar ConcentrationZn-Al Layered Double Hydroxide
ISSN
1947-2935
Abstract
We investigated the morphological evolution of ZnAl-layered double hydroxides (LDHs) during the hydrothermal reaction on an Al2O3 seed layer grown Si substrate with variation of source molar concentration. The surface morphology of the ZnAl-LDHs changed from larger granular plates to smaller granular plates, which gradually packed each other with an increasing molar concentration of hydrothermal solution from 10 to 90 mM. The structural and chemical investigations by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) showed that the Zn/Al ratio in the ZnAl-LDHs increased with increasing the source molar contents. Optical investigations by Raman and photoluminescence (PL) spectra showed that the ZnAl-LDH in our results contained nitrate interlayer and the emission spectra changed because the surface charge density decreased with increasing the Zn/Al ratio and affected on the energy-transfer process. © 2016 by American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2160
DOI
10.1166/sam.2016.2841
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
Smart Textile Convergence Research Group1. Journal Articles


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