이선영
2018-04-19T01:29:22Z
2018-04-19T01:29:22Z
2016-09
MATERIALS CHEMISTRY AND PHYSICS, v. 181, Page. 241-247
0254-0584
1879-3312
https://www.sciencedirect.com/science/article/pii/S0254058416304692
https://repository.hanyang.ac.kr/handle/20.500.11754/69317
Ferric oxide powder in the alpha phase (alpha-Fe2O3) was deposited on an aluminum oxide (Al2O3) substrate by a nanoparticle deposition system using the dry deposition method. X-ray diffraction (XRD) images confirmed that the phase of the deposited alpha-Fe2O3 did not change. The deposited alpha-Fe2O3 was characterized in terms of its microstructure using scanning electron microscopy (SEM). A porous network microstructure formed when small agglomerates of Fe2O3 (SAF) were deposited. The deposition and formation mechanism of the microstructure were investigated using SEM and three-dimensional (3D) profile analysis. First, a dense coating layer formed when the film was thinner than the particle size. After that, as the film thickness increased to over 5 mu m, the porous network structure formed by excavating the surface of the coating layer as it was bombarded by particles. Rhodamine B (RhB) was degraded after 6 h of exposure to the Fe2O3 coating layer with SAF, which has good photocatalytic activity and a high porous network structure. The kinetic rate constants of the SAF and large agglomerates of Fe2O3 (LAF) were calculated to be 0.197(h(-1)) and 0.128(h(-1)), respectively, based on the absorbance results. Using linear sweep voltammetry, we confirmed that the photoelectric effect occurred in the coating layer by measuring the resulting current under illuminated and dark conditions. (C) 2016 Elsevier B.V. All rights reserved.
This work was supported by the Energy Efficiency of Resources Core Technology Program (No.20142020103730) of the Korea Institute of Energy Technology Evaluation and Planning, granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. This research was also supported by the Basic Science Research Program of the National Research Foundation of Korea, funded by the Ministry of Education, Science and Technology (No.2013R1A1A2074605) and was supported by the Human Resources Development program(No. 20154030200680) of the Korea Institute of Energy Technology Evaluation and Planning(KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy.
en_US
ELSEVIER SCIENCE SA
Ceramic
Coating
Porous materials
Electrochemical properties
HEMATITE PHOTOANODE
THIN-FILMS
WATER
ALPHA-FE2O3
SYSTEM
METAL
TIO2
Photocatalytic evaluation of self-assembled porous network structure of ferric oxide film fabricated by dry deposition process
Article
181
10.1016/j.matchemphys.2016.06.055
241-247
MATERIALS CHEMISTRY AND PHYSICS
Park, Y
Kim, H
Lee, GY
Pawar, RC
Lee, JS
Lee, CS
2016001297
E
COLLEGE OF ENGINEERING SCIENCES[E]
DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING
sunyonglee