碳包覆TiO2-CeO2纤维的制备及其光催化降解盐酸环丙沙星

doi:10.3724/SP.J.1095.2013.30019

摘要/Abstract

摘要： 以聚乙烯吡咯烷酮（PVP）溶胶/钛酸正丁酯为前驱体,硝酸铈为掺杂剂, 采用溶胶凝胶法制备了CeO2掺杂TiO2凝胶,继而以静电纺丝法制备了CeO2掺杂TiO2纳米纤维,最后利用气相沉积法,在制得的纳米纤维表面包覆一层碳膜。采用扫描电子显微镜、红外吸收光谱、透射电子显微镜和X射线衍射对制备的纳米纤维进行了表征,研究了其在紫外光照射下对盐酸环丙沙星的光催化降解能力。当光照时间为40 min时，碳包覆TiO2复合纳米纤维具有很好的光催化性能，对盐酸环丙沙星的降解率达到85.8%。

关键词: 静电纺丝, TiO2, CeO2, 碳包覆, 光催化

Abstract: The CeO2-TiO2 sol-gel was prepared by the sol-gel method using polyvinylpyrrolidone(PVP) sol/titaniumn-butyloxide(Ti(OC4H9)4) as the precursor and Ce(NO3)3·6H2O as the doping agent, and the CeO2-doped TiO2 nanofiber was prepared by the electrospinning technique. Finally, a layer of carbon membrane was deposited on the surface of the CeO2-TiO2 composite nanofibers using chemical vapor deposition(CVD). The structure and properties of the carbon-coated nanofibers were studied using SEM, FTIR, TEM, XRD, and its photocatalytic activity toward the degradation of ciprofloxacin hydrochloride was investigated under UV-light irradiation. The experimental results show that carbon-coated TiO2 composite nanofibers exhibit higher photocatalytic performance. When the irradiation time is 40 min, the degradation rate of ciprofloxacin hydrochloride is up to 85.8%.

Key words: electrospinning, TiO2, CeO2, carbon-coated, photocatalysis

中图分类号:

O643

郑曦, 陈思英, 陈震, 陈日耀, 陈晓. 碳包覆TiO₂-CeO₂纤维的制备及其光催化降解盐酸环丙沙星[J]. 应用化学, DOI: 10.3724/SP.J.1095.2013.30019.

ZHENG Xi*, CHEN Siying, CHEN Zhen, CHEN Riyao, CHEN Xiao. Preparation of Carbon-Coated TiO₂-CeO₂ Fibers for the Photocatalytic Degradation of Ciprofloxacin[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.30019.

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碳包覆TiO₂-CeO₂纤维的制备及其光催化降解盐酸环丙沙星

Preparation of Carbon-Coated TiO₂-CeO₂ Fibers for the Photocatalytic Degradation of Ciprofloxacin

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