http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ulugbek Shaislamov,Heon-Ju Lee 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.69 No.7
Here, we present a facile synthesis method and photoelectrochemical characterizations of a p-type CuO-nanorod array photoelectrode with ZnO nanorod branches. Vertically-aligned CuO nanorods were synthesized by using direct oxidation of metallic Cu nanorods grown on a Cu substrate by using a facile template-assisted electrodeposition method. The formed CuONR/ZnONB hierarchicallystructured photoelectrode exhibited remarkable photoelectrodechemical performance and outstanding stability compared to the CuO NR photoelectrode without ZnO NR branches. Morphological, optical and electrochemical characterizations were carried out in order to examine the effects of ZnO nanorod branches on the stability and the overall electrochemical performance of the electrode.
태양광 수소 생산용 CdS와 CdSe 흡착 TiO2 나노튜브 어레이
Ulugbek Shaislamov,김현,양비룡 한국세라믹학회 2012 한국세라믹학회지 Vol.49 No.1
In this work we report investigation results of enhanced visible light photocatalytic properties of CdS and CdSe sensitized TiO2 nanotube heterostructures. Anodically grown ordered TiO2 nanotube arrays were sensitized with CdS and CdSe by using successive ionic layer adsorption and reaction method. Photocatalytic measurements revealed that heterostructured samples show enhanced photocurrent density under the visible light illumination. Improved visible light performance of the heterostuctures was explained by lower band gap of the CdS and CdSe and their favorable conduction band positions relative to TiO2. Moreover, due to the lower band gap of the CdSe (1.7 eV) compared to CdS (2.4 eV), both photocurrent density and photoconversion efficiency results showed superior activity.
Quantitative Analysis of Void Morphology in Fe-40 wt.%Ni Alloy by Electron Holography
Ulugbek Shaislamov,양준모,유정호,유정훈,유대황,신기삼,이종훈,양비룡,나영상,조경식 대한금속·재료학회 2009 METALS AND MATERIALS International Vol.15 No.6
In this paper, we briefly report on a detailed investigation of the morphology of voids in the Fe-40 wt.%Ni alloy using the electron holography technique. By analyzing the phase shift across the voids, we could obtain visual information on their morphology. Moreover, the obtained thickness profiles of the voids allowed us to measure quantitatively their depth and width. The obtained results are very important for further investigations of the 3-dimensional (3D) morphology of void-type defects in the material. In this paper, we briefly report on a detailed investigation of the morphology of voids in the Fe-40 wt.%Ni alloy using the electron holography technique. By analyzing the phase shift across the voids, we could obtain visual information on their morphology. Moreover, the obtained thickness profiles of the voids allowed us to measure quantitatively their depth and width. The obtained results are very important for further investigations of the 3-dimensional (3D) morphology of void-type defects in the material.
Ulugbek Shaislamov,양비룡,K. Park,김의태,이종훈 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.5
In this work we report the photocatalytic properties of TiO<sub>2</sub> nanotubes (NTs) with Cr<sub>2</sub>O<sub>3</sub> nanoparticles (NPs) to improve the visible light activity of the composite. The TiO<sub>2</sub> NTs with ~100 nm diameters and ~8 μm lengths were fabricated by means of anodization technique with an organic formamide-based electrolyte at an applied voltage of ~35 V. The Cr<sub>2</sub>O<sub>3</sub> NPs of 5 ~ 10 nm in diameter were formed on the outer walls of the NTs by dipping the NTs into a liquid solution including Cr-oxide precursors. The NT arrays with NPs showed visible-light absorption properties that were superior to those of NTs without NPs. That Cr impurities within the TiO<sub>2</sub> NTs originating from the NPs formed on the surfaces of the TiO<sub>2</sub> NT arrays are believed to provide donor levels of Cr<sup>3+</sup> ions located deep in the forbidden band gap of the TiO<sub>2</sub> NTs and superior absorption properties under visible light up to ~600 nm. The impurity levels also act as fast recombination sites for electrons and holes formed by photon excitation.