【摘要】： 本文系統(tǒng)地研究了兩部分內(nèi)容：SrTiO3微納米材料的靜電紡絲技術(shù)結(jié)合溶膠—凝膠法制備、表征及光催化性能研究；Fe3O4-ZnO復(fù)合納米纖維的靜電紡絲技術(shù)結(jié)合高分子線模板法制備及表征。 (1)以乙酸鍶、鈦酸四丁酯和聚乙烯吡咯烷酮(PVP)為原料,通過靜電紡絲技術(shù)結(jié)合溶膠—凝膠法制備了一維SrTiO3微納米材料。獲得的納米纖維,經(jīng)XRD、SEM、差熱-熱重分析儀進(jìn)行了表征,結(jié)果表明制得的產(chǎn)物的特征峰并無雜質(zhì)峰,成功合成了純凈的一維SrTiO3納米材料,纖維的直徑分布在50-400 nm之間,典型直徑約為100 nm。此外,研究表明,SrTiO3微納米纖維具有很好的光催化性能。 (2)聚丙烯腈(PS)為線模板,將Fe3O4和ZnO納米粉體通過靜電紡絲技術(shù)共紡出Fe3O4-ZnO復(fù)合納米纖維。獲得的Fe3O4-ZnO復(fù)合納米纖維,經(jīng)XRD、SEM、TEM等手段表征后,結(jié)果表明Fe3O4和ZnO均勻分散到了復(fù)合納米纖維中。磁學(xué)研究表明,Fe3O4-ZnO復(fù)合納米纖維顯示出良好的軟磁學(xué)性質(zhì),具有較好的順磁性特征；光譜分析顯示,由于Fe3O4的加入ZnO激發(fā)光譜的峰位發(fā)生了偏移,熒光強(qiáng)度也發(fā)生了變化。此外,通過改進(jìn)靜電紡絲裝置,制備了定向排列的Fe3O4和Fe3O4-ZnO復(fù)合納米纖維。
[Abstract]:In this paper, two parts are systematically studied: preparation, characterization and photocatalytic properties of SrTiO3 micro-nano materials by electrostatic spinning combined with sol-gel method; Preparation and characterization of Fe3O4-ZnO Composite Nanofibers by Electrospinning combined with Polymer Wire template. (1) Strontium Acetate, Tetrabutyl Titanate and Polyvinylpyrrolidone (PVP) were used as raw materials. One-dimensional SrTiO3 micro-nano materials were prepared by electrostatic spinning and sol-gel method. The obtained nanofibers were characterized by XRD,SEM, differential thermogravimetric analysis. The results show that the characteristic peaks of the prepared nanofibers are free of impurity peaks, and the pure one-dimensional SrTiO3 nanomaterials have been successfully synthesized. The diameter distribution of the fibers ranges from 50 to 400 nm. The typical diameter is about 100 nm. In addition, the results show that SrTiO3 nanofibers have good photocatalytic properties. (2) Polyacrylonitrile (PS) nanocrystalline Fe3O4 and ZnO nano-powders were co-spun by electrospinning technology to produce Fe3O4-ZnO composite nanofibers. (2) Polyacrylonitrile (PS) was used as a wire template. The Fe3O4-ZnO composite nanofibers were characterized by XRD,SEM,TEM and the results showed that Fe3O4 and ZnO were uniformly dispersed into the composite nanofibers. Magnetic studies show that the Fe3O4-ZnO nanofibers exhibit good soft magnetic properties and have good paramagnetic properties, and the fluorescence intensity also changes due to the shift of the peak position of the excitation spectrum in the addition of Fe3O4 to ZnO. In addition, directionally aligned Fe3O4 and Fe3O4-ZnO nanofibers were prepared by improving the electrostatic spinning device.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2010
【分類號(hào)】：TB383.1

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本文編號(hào)：2270655