- Fabrication and Growth Behavior of TiO2 Nanotube Arrays by Anodic Oxidation Method
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Seon-Min Kim, Ki-Won Kim, Kwang-Sun Ryu, Yoo-Young Kim, Kwon-Koo Cho
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J Korean Powder Metall Inst. 2011;18(1):56-63.
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DOI: https://doi.org/10.4150/KPMI.2011.18.1.056
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 Abstract
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- Recently, TiO_2 nanotubes have considerably researched because of their novel application about photocatalysis, dye-sensitized solar cells (DSSCs), lithium ion battery, etc. In this work, self-standing TiO_2 nanotube arrays were fabricated by anodic oxidation method using pure Ti foil as a working electrode in ethylene glycole with 0.3M NH_4F + 2%H_2O. Growth behavior of TiO_2 nanotube arrays was compared according to temperature, voltage and time. The morphology, structure and crystalline of anodized TiO_2 nanotube arrays were observed by FE-SEM (field emission scanning electron microscope) and XRD (X-ray diffraction).
- Fabrication of Iron-Molybdenum Alloyed Nanoparticle and Nanowire using Chemical Vapor Condensation(CVC)
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Jong-Keun Ha, Kwon-Koo Cho, Ki-Won Kim, Kwang-Sun Ryu
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J Korean Powder Metall Inst. 2010;17(3):223-229.
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DOI: https://doi.org/10.4150/KPMI.2010.17.3.223
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Abstract
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- Iron(Fe)-Molybdenum(Mo) alloyed nanoparticles and nanowires were produced by the chemical vapor condensation(CVC) process using the pyrolysis of iron pentacarbonyl(Fe(CO)_5) and Molybdenum hexacarbonyl(Mo(CO)_6). The influence of CVC parameter on the formation of nanoparticle, nanowire and size control was studied. The size of Fe-Mo alloyed nanoparticles can be controlled by quantity of gas flow. Also, Fe-Mo alloyed nanowires were produced by control of the work chamber pressure. Moreover, we investigated close correlation of size and morphology of Fe-Mo nanoparticles and nanowires with atomic quantity of inflow precursor into the electric furnace as the quantitative analysis. Obtained nanoparticles and nanowires were investigated by field emission scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction.
- Fabrication of TiO2 Nanotube Arrays by Anodic Oxidation Method and its Photoelectrochemical Properties
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Seon-Min Kim, Kwon-Koo Cho, Yeong-Jin Choe, Ki-Won Kim, Kwang-Sun Ryu
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J Korean Powder Metall Inst. 2010;17(3):216-222.
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DOI: https://doi.org/10.4150/KPMI.2010.17.3.216
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Abstract
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- Self-standing TiO_2 nanotube arrays were fabricated by potentiostatic anodic oxidation method using pure Ti foil as a working electrode and ethylene glycol solution as electrolytes with small addition of NH_4F and H_2O. The influences of anodization temperature and time on the morphology and formation of TiO_2 nanotube arrays were investigated. The fabricated TiO_2 nanotube arrays were applied as a photoelectrode to dye-sensitized solar cells. Regardless of anodizing temperature and time, the average diameter and wall thickness of TiO_2 nanotube show a similar value, whereas the thickness show a different trend with reaction temperature. The thickness of TiO_2 nanotube arrays anodized at 20°C and 30°C was time-dependent, but on the other hand its at 10°C are independent of anodization time. The conversion efficiency is low, which is due to a morphology breaking of the TiO_2 nanotube arrays in manufacturing process of photoelectrode.
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Citations
Citations to this article as recorded by  - The growth and morphology of copper phthalocyanine on TiO2 nanotube arrays
Sung Ha Ju, Sanghyun Han, Jeong Soo Kim
Journal of Industrial and Engineering Chemistry.2013; 19(1): 272. CrossRef - Characteristics of Porous Titanium Fabricated by Space-holder Method using NaCl
Byoung-Hwi Son, Jae-Geun Hong, Yong-Taek Hyun, Seung-Eon Kim, Seok-Choun Bae
Journal of Korean Powder Metallurgy Institute.2011; 18(6): 488. CrossRef - Investigation About Surface Microstructure of Aluminum with Change of Voltage, a Period of Treatment and Density of Electrolyte in Micro-Arc Oxidation Treatment
In-Chul Yeo, In-Cheol Kang
Journal of Korean Powder Metallurgy Institute.2011; 18(6): 575. CrossRef
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