Paper Type |
Contributed Paper |
Title |
Comparison of Sizes, Morphologies and Optical Properties of NiO Nanostructures Synthesized Using Acetate and Nitrate Anions from Nickel Salts via Hydrothermal Method |
Author |
Pranwadee Kaewmuang, Watcharapong Pudkon, Anurak Prasatkhetragarn, Piyarat Nimmanpipug, Sila Kittiwachana, Sulawan Kaowphong* |
Email |
sulawank@gmail.com |
Abstract: Porous NiO nanocrystals were synthesized using a hydrothermal method in mediums of different anions from nickel salts, acetate (CH3COO-) and nitrate (NO3-),followed by calcination at 500 °C. Firstly, b-Ni(OH)2 powders with a hexagonal structure were formed. Using acetate and nitrate anions, the obtained b-Ni(OH)2 powders were composed of thin nanosheets (0.8-2.1 mm in length), and a splinter-like structure self-assembled with longer nanosheets (9.8-24.2 mm), respectively. The difference in the interaction ability between the anions and the b-Ni(OH)2 surfaces, affecting the growth behavior of the crystals, was examined using the density functional theory (DFT) method. After calcination, the b-Ni(OH)2 turned into porous NiO with a cubic structure but their morphologies were unchanged. The porous NiO with longer nanosheets possessing higher crystallinity and larger surface area provided better UV-Vis absorption ability. |
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Start & End Page |
1122 - 1128 |
Received Date |
2016-10-12 |
Revised Date |
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Accepted Date |
2016-12-29 |
Full Text |
Download |
Keyword |
NiO, Semiconductor, Nanocrystalline material, X-ray technique, Electron microscopy, Optical property |
Volume |
Vol.45 No.2 (March 2018) |
DOI |
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SDGs |
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