應用釩氧化物奈米柱產氫之研究

The study of hydrogen production by Vanadium oxides nanotubes

陳泓杰(Hong-Jie Chen)

指導教授 ： 楊重光

國立臺北科技大學/工程學院/化學工程研究所/碩士(2012年)

摘要

本研究分為兩部分，包括：（1）以商用鋁板(#1070)做為鋁陽極處理膜(Anodic Aluminum Oxide,AAO)之基材，製作奈米模板。（2）利用電沉積法 (electrodeposition) 於奈米模板孔隙中製備釩氧化物(VxOy)奈米柱。其中，利用實驗設計法搭配變異數分析(Analysis of Variance)做進一步之研究，電沉積法之控制變因包括：釩酸鈉溶液濃度、操作電壓和沉積時間，並探討對產氫實驗的影響與效率。
鋁板經電解拋光後，利用草酸電解液於實驗條件控制下經過陽極處理(AAO)獲得奈米模板。該模板經電化學製程後，表面會形成一具高規則孔隙之高品質奈米模板薄膜。使用電沉積法利用釩酸鈉(Na3VO4)溶液為反應溶液，並利用外加電壓0.3V之輔助，使釩離子沉積於AAO模板內，待乾燥後VxOy奈米柱即形成。將所製作之VxOy奈米柱，以鉻酸和磷酸混合液（6vol% H3PO4+ 1.8wt% chromic acid（CrO3））於恆溫(25℃）下移除奈米模板，製成奈米柱。本研究利用化學分析能譜儀(Electron Spectroscopy for Chemical Analysis, ESCA)、場發電子顯微鏡 (Field Emission-Scanning Electron Microscope, FE-SEM)及能量散射光譜儀(Energy Dispersive Spectrometer, EDS)分析其電沉積產物之物理及化學性質。

關鍵字

陽極處理 ； 奈米模板 ； 電沉積法 ； 產氫

並列摘要

Semiconductor metal oxides such as TiO2, Ta3N5, and Ag3VO4 are often treated as the photocatalysts for light-induced photo-oxidation of water. Previous studies in our group have shown that vanadium oxides particles were photocatalysts for water-splitting. However, the performance of catalysts can vary significantly by its surface morphology. As a result, this study aims to investigate the hydrogen production capability of vanadium oxides with 1-D nano-structure. The commercial aluminum (#1070) was firstly anodized to aluminum films (Anodic Aluminum Oxide, AAO) as the nano-scale templates. Then, vanadium oxide nanorods were fabricated and deposited finto the template through electrodeposition method. In addition, design of experiment accompanied with ANOVA was applied to analyze the significance of the control factors including concentrations of sodium vanadate, applied voltage, and deposition time. The properties of vanadium oxide nanorods were characterized by ESCA(Electron Spectroscopy for Chemical Analysis), FE-SEM (Field Emission-Scanning Electron Microscope) and EDS (Energy Dispersive Spectrometer).

並列關鍵字

Anodizing ； Oxide Template ； electrodeposition ； hydrothermal method

參考文獻

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