Synthesis and Characterization of V2O5/Pt Core-Shell Nanowires
碩士 === 中國文化大學 === 化學工程與材料工程學系奈米材料碩士班 === 101 === In our experiment, pure V2O5 1-D nanowires have been synthesized by thermal evaporation. The nanostructures were successfully synthesized with horizontal tube furnace by using V2O5 powder. Next the core-shell Pt/V2O5 nanowires were by subsequent atomi...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/45889826128376957647 |
| Summary: | 碩士 === 中國文化大學 === 化學工程與材料工程學系奈米材料碩士班 === 101 === In our experiment, pure V2O5 1-D nanowires have been synthesized by thermal evaporation. The nanostructures were successfully synthesized with horizontal tube furnace by using V2O5 powder. Next the core-shell Pt/V2O5 nanowires were by subsequent atomic layer deposition (ALD) of Pt. We were using (methylcyclopentadienyl)-trimethylplatinum (MeCpPtMe3) as precursor and designing three parameter 50, 100 and 150 ALD cycle.
The morphology of 1-D nanostructures was analyzed by field emission scanning electron microscope (FESEM). It is shown that nanostructures are nanowires with diameter range between 60 and 150 nm and with lengths extending up to several microns. High-resolution transmission electron microscopy (HRTEM) and selection area diffraction (SAD) patterns of V2O5 nanowires clearly show that they are single-crystalline with a growth direction of [110]. The structures and chemical state of element were characterized by means of x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS) and micro-raman spectroscopy.
The properties of core-shell Pt/V2O5 nanowires and pure V2O5 nanowires were analyzed by photoluminescence (PL). The pure V2O5 nanowires emanated 550 nm and core-shell Pt/V2O5 had extra 466 nm signals.
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