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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 최진섭
- 발행연도
- 2017
- 저작권
- 인하대학교 논문은 저작권에 의해 보호받습니다.
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Titanium nanotube has been applied for sensor, photocatalyst, solar cell and biomaterial because of physical and chemical stability. Among those area, water splitting is one of the various application of TiO2. Titanium nanotube has been used as photoelectrode, anode for Li ion battery and other electrode but catalysts is required for water splitting area because of its low conductivity. Most of academic literature was reported on noble metal doping recently. As low-cost catalyst, several materials were applied for catalytic activity into TiO2 nanotube for water splitting. All of materials was doped into TiO2 nanotube by single step anodization (SSA) and potential shock method(PS). Then because SSA method is beneficial for conductivity, we were focused on the SSA method. Hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) were tested with those materials then we focused on molybdenum oxide because it exhibited highest performance among other catalysts in hydrogen evolution reaction. However, performance of molybdenum oxide in OER was not acceptable so that its role was focused on HER only. Catalytic activities of MoO3 are come from oxygen vacancies of α-MoO3 which formed at top of crystal octahedrons of orthorhombic α-MoO3. Then molybdenum oxide doped electrode was operated in extreme acidic and basic condition.
목차
1. Introduction. 12. Background information. 42.1. Anodic TiO2 nanotube fabrication. 42.2. Formation mechanism of TiO2 nanotube arrays. 52.3. Low-cost catalysts doping into TiO2 nanotubes. 113. Experimental & analysis. 123.1. Preparation of TiO2 nanotubes. 123.2. Analysis. 133.2.1 Field Emission Scanning Electron Microscope. 133.2.2 Linear weep voltammetry. 133.2.3 Electrochemical Impedance spectroscopy. 133.2.4 Inductively coupled plasma mass spectrometry. 143.2.5 Inductively coupled plasma optical emission spectrometry. 143.2.6 X-ray photoelectron spectroscopy. 154. Result & Discussion. 164.1. Morphologies of fabricated TiO2 nanotubes. 164.2. Measurement of an amounts of doped catalysts. 194.3. Charactereristics of 2 mM of catalysts doped electrodes. 234.4. Catalytic activities of MoO3. 274.5. Catalytic activities of MoO3 with high concentration. 345. Conclusion. 406. Reference. 41
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