| 静电纺丝法制备V2O5微纳米棒及光催化性能 | |
| Electrospinning Preparation and Visible-Light Photocatalytic Activity of V2O5 Micro-Nanorod | |
| 摘要: 以聚乙烯吡咯烷酮(PVP)和偏钒酸铵(NH4VO3)为原料,利用静电纺丝技术结合溶胶过程制备PVP/NH4VO3纤维,对纤维缓慢控温处理制备V2O5微纳米棒。采用热重-差热分析(TG-DTA)、X射线衍射光谱(XRD)、傅立叶红外光谱(FT-IR)、场发射扫描电子显微镜(FE-SEM)、X射线光电子能谱(XPS)和紫外-可见漫反射光谱(UV-Vis)技术手段对V2O5微纳米棒的结构和表面形态进行表征。以亚甲基蓝(MB)的光降解为模型反应,研究V2O5微纳米棒的光催化性能。结果表明:热处理温度对催化剂表面形态和晶相的生长有明显影响,550 ℃煅烧的V2O5微纳米棒在可见光区对MB的光降解效率最高,并分析和探讨了可能的光催化机理。 | |
| 关键词: 静电纺丝法 V2O5 微纳米棒 光催化性能 | |
| 基金项目: 国家自然科学基金(No.20871023);吉林省科技发展计划项目(No.20101549),吉林省教育厅(No.2013130)资助项目。 | |
| Abstract: V2O5 micro-nanorods were fabricated via calcining the as-synthesized precursors prepared by electrospinning technique route using NH4VO3 and PVP as regent. The physicochemical properties of the catalysts were characterized by Thermogravimetric and Differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance spectra(UV-Vis). The photocatalytic activity of V2O5 micro-nanorod toward the decomposition of Methylene Blue (MB) was investigated. The results indicated that calcination temperature had a great influence on the morphologies and crystalline phases of the micro-nanorod. 550 ℃ micro-nanorod exhibited the highest activity for degrading MB under Visible light, and the photocatalytic mechanism of V2O5 micro-nanorod was also presented. | |
| Keywords: electrospun V2O5 micro-nanorod photocatalytic activity | |
| 投稿时间：2012-07-28 修订日期：2012-10-18 | |
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| 罗飞,周德凤,杨国程,刘建伟,李朝辉,孟健.静电纺丝法制备V2O5微纳米棒及光催化性能[J].无机化学学报,2013,29(3):500-506. | |
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