| 电纺丝-气相沉积法制备碳包覆TiO2纳米纤维及其光催化行为的研究 |
| Carbon Nanoparticles Coated TiO2 Nanofibers and Its Photocatalytic Activity |
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| 摘要: 以聚乙烯吡咯烷酮(PVP)溶胶/钛酸正丁酯为前躯体，以静电纺丝法制备了PVP/Ti(OC4H9)4纤维。550 ℃下，空气氛中焙烧双组分纤维，得到直径60～300 nm的TiO2纳米纤维。继而以气相沉积法制得碳包覆TiO2纳米纤维。用红外吸收光谱(FTIR)、X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等对纳米纤维进行了表征。与TiO2纳米纤维、TiO2纳米粉体相比,气相沉积法制备的碳包覆TiO2纳米纤维在光分解亚甲基蓝上表现出更好的催化性能。 |
| 关键词: 静电纺丝 纳米纤维 碳包覆 二氧化钛 光催化 |
| 基金项目: |
| Abstract: This work investigates the fabrication of the ultrafine fibers by polyvinylpyrrolidone (PVP) sol/titanium n-butyloxide (Ti(OC4H9)4) using the electrospinning technique. The bicomponent fibers of PVP/Ti(OC4H9)4 are heat treated at 200 ℃ and calcined at 550 ℃. TiO2 nanofibers with a diameter of 60～300 nm were fabricated. Thin carbon films were deposited on the surface of the TiO2 nanofibers by chemical vapor deposition(CVD). The morphological structure of the ultrafine fibers has been studied by means of infrared (FTIR) spectrum, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Comparing with TiO2 nanofibers the carbon film deposited TiO2 fibers exhibit higher photo-catalytic activity toward the degradation of methylene blue. |
| Keywords: electrospinning nanofibers carbon coated TiO2 photocatalytic activity |
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| 摘要点击次数: 1819 |
| 全文下载次数: 2032 |
| 卢才英,陈 震,韩洪春,郑 曦,陈 晓,陈日耀.电纺丝-气相沉积法制备碳包覆TiO2纳米纤维及其光催化行为的研究[J].无机化学学报,2010,26(2):313-317. |
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