Publications (4)23.43 Total impact
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Article: Three-dimensional CuO nanobundles consisted of nanorods: hydrothermal synthesis, characterization, and formation mechanism.
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ABSTRACT: Novel monoclinic CuO nanobundles, 0.8-1 microm in size, were synthesized at 130 degrees C in the presence of sodium dodecyl benzenesulfonate (SDBS) by a simple hydrothermal method. Each nanobundle was comprised of many nanorods with one ends growing together to form a center and another ends radiating laterally from this center. The length and the diameter of these assembled nanorods are in the range of 200-300 nm and about 20-30 nm, respectively. HRTEM and SAED results indicated that the CuO nanorods grow along the [010] direction. An investigation of the hydrothermal process revealed that the reaction time, temperature and surfactant play important roles in the formation of the resultant CuO nanostructures. Isolated CuO nanorods were obtained when the temperature was increased to 190 degrees C, and CuO microflowers composed of many nanosheets were produced at 130 degrees C when cetyltrimethylammonium bromide (CTAB) was employed instead of SDBS. The possible mechanism for the formation of these CuO nanostructures was discussed simply on the basis of the experimental results.Journal of Nanoscience and Nanotechnology 08/2010; 10(8):5121-8. · 1.56 Impact Factor -
Article: Synthesis of shape-controlled beta-In2S3 nanotubes through oriented attachment of nanoparticles.
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ABSTRACT: Beta-In(2)S(3) nanotubes were synthesized using an organic solution pyrolysis route. The shape of the beta-In(2)S(3) nanotubes was controlled from hexagonal nanoplates to nanotubes simply by changing the reaction time. The growth mechanism of the nanotubes was explained by oriented attachment. The beta-In(2)S(3) nanotubes had a diameter, wall thickness and length of 5.0 nm, 0.79 nm and >10 microm, respectively. The diameter of the beta-In(2)S(3) nanotubes was found to be dependent on the sulfur concentration.Chemical Communications 04/2010; 46(13):2292-4. · 6.17 Impact Factor -
Article: A New Method of Carbon‐Nanotube Patterning Using Reduction Potentials
Advanced Materials 01/2009; 21(12):1257 - 1260. · 13.88 Impact Factor -
Article: Large Scale Fabrication of Single-Crystal CuO Nanoplatelets Using a Template-Free Hydrothermal Approach
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ABSTRACT: This paper reports the large scale production of CuO nanoplatelets with smooth surface using a simple hydro-thermal method in a water and ethanol solution without any templates or additives. The micro-structure and morphology of the CuO nanoplatelets were examined by X-ray diffraction, Raman spectra, field emission scanning electron microscopy and transmission electron microscopy. The CuO nanoplatelets were monoclinic, and their length and width ranged from 100 to 300 nm and 80 to 120 nm, respectively. A possible growth mechanism for the formation of CuO nanoplatelets was proposed. The volume ratio of ethanol in the solution was found to be a critical effect on the CuO morphology during the hydrothermal stage. The band gap of the CuO nanoplatelets was estimated to be 2.13 eV from the UV-vis spectra.Electronic Materials Letters 01/2008; 4:161-165. · 1.82 Impact Factor
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Institutions
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2008–2010
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Sungkyunkwan University
- School of Advanced Materials Science and Engineering (AMSE)
Seoul, Seoul, South Korea
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