【作者】 张煜桁； 王颖； 纪立军；

【Author】 YuHeng Zhang;Ying Wang;LiJun Ji;Chemistry and Chemical Engineering, University of Yangzhou;

【机构】 扬州大学；

【摘要】 本文采用静电纺丝技术制备出平均直径在150 nm左右的聚苯乙烯（PS）纳米纤维,并采用溶胶凝胶法在其表面修饰TiO₂,经过烧结制备出TiO₂/C复合纳米管,用SEM、TEM、TGA和XRD进行了表征。结果显示,所制得的TiO₂/C复合纳米管管径在200 nm左右,TiO₂占TiO₂/C复合纳米管的72.5 wt%。TiO₂由锐钛矿相和金红石相组成。以TiO₂/C复合纳米管为光催化剂,通过紫外光对偏二甲肼（UDMH）催化降解3小时。紫外-可见光吸收光谱检测证明,TiO₂/C复合纳米管对偏二甲肼的降解率达到80.0%,偏二甲肼试样的COD值下降28.0%,表明TiO₂/C复合纳米管能够有效降解偏二甲肼。更多还原

【Abstract】 Polystyrene（PS） nanofibers with an average diameter of 150 nm were prepared via electrospinning method. The PS nanofibers were surface modified by TiO₂ nanoparticles by a sol-gel method, and characterized by SEM, TEM TGA and XRD. Results showed that the TiO₂/C nanotubes were around 200 nm in diameter, containing 72.5 wt% TiO₂ of anatase and rutile phase. The TiO₂/C nanotubes were used as catalysts to degrade unsymmetrical dimethylhydrazine（UDMH） for 3 hours under ultraviolet light. Ultraviolet-visible absorption spectra showed that the degradation rate of UDMH reached 80.0%. The COD value of the UDMH solution decreased 28.0%. The result suggests that the TiO₂/C nanotubes were effective catalysts for degrading UDMH.更多还原