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研究生(外文):Yang, Li-Heng
論文名稱(外文):Three Dimensional CuO/TiO2 Hybrid Nanorod Arrays Prepared by Electrodeposition in AAO Membranes as a Fenton-like Photo-catalyst for Dye Degradation
指導教授(外文):Chen, Lih-JuannChueh, Yu-Lun
口試委員(外文):Ho, Johnny
外文關鍵詞:Anodic aluminum oxidePhoto-Fenton like reactionsemiconductor nanorod arraytemplate-assisted electrodepositiondye photo-degradation
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Three-dimensional (3D) CuO/TiO2 hybrid nanorods (NRs) arrays with noble-metal-free composition, fabricated by template-assisted low-cost processes, were used as a photo-Fenton-like catalyst for dye degradation. CuO NRs were deposited inside an AAO template by electrodeposition method and annealed at various temperatures, followed by TiO2 thin film deposition through E-gun evaporation. After annealing treatment of CuO/TiO2 heterostructure at different temperatures, p-type CuO and n-type TiO2 formed the p-n heterojunction. The tenorite phase of CuO NRs and anatase phase of TiO2 were confirmed by Raman analysis, whereas crystallinity of CuO and TiO2 was proved by XRD analysis. For CuO/TiO2 heterostructure, the elemental distribution and composition were analyzed by EDS mapping and EELS profile, respectively. In the presence of H2O2, CuO/TiO2 hybrid structure performed more efficiently than CuO NRs for Rhodamine B degradation under the irradiation of 500 W Mercury-Xenon arc lamp. This study demonstrated the effect of length of CuO NRs on the photo-degradation performance of CuO NRs as well as CuO/TiO2 heterostructure. The mechanism and role of photo-Fenton like catalyst in photo-degradation of dye was also illustrated in this work. The optimized CuO/TiO2 hybrid NR array structure exhibited the highest photo-degradation activity to date. With high aspect ratio, hybrid CuO/TiO2 NR-array can act as an excellent photocatalyst for PEC water splitting.
Chapter 1 Introduction 1
Chapter 2 Literature Review 7
Chapter 3 Experimental and Analytical Instruments 35
Chapter 4 Experimental Process 43
Chapter 5 Results and Discussion 49
Chapter 6 Conclusions 71
Chapter 7 Future prospect 72
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